1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.5"/>
<title>Faiss: /data/users/matthijs/github_faiss/faiss/gpu/GpuIndexIVFPQ.cu Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
$(document).ready(function() { searchBox.OnSelectItem(0); });
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">Faiss
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.5 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
<li><a href="annotated.html"><span>Classes</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
<li>
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
</ul>
</div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Friends</a></div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="dir_6b3ae6988449b0834e9596fad5d75199.html">gpu</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">GpuIndexIVFPQ.cu</div> </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * This source code is licensed under the BSD+Patents license found in the</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Copyright 2004-present Facebook. All Rights Reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "GpuIndexIVFPQ.h"</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "../IndexFlat.h"</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "../IndexIVFPQ.h"</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "../ProductQuantizer.h"</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "GpuIndexFlat.h"</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "GpuResources.h"</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "impl/IVFPQ.cuh"</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "utils/CopyUtils.cuh"</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "utils/DeviceUtils.h"</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <limits></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a56a552e8c2e29f33c39883145bd7629c"> 25</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a56a552e8c2e29f33c39883145bd7629c">GpuIndexIVFPQ::GpuIndexIVFPQ</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">const</span> <a class="code" href="structfaiss_1_1IndexIVFPQ.html">faiss::IndexIVFPQ</a>* index,</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html">GpuIndexIVFPQConfig</a> config) :</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html">GpuIndexIVF</a>(resources,</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  index->d,</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  index->metric_type,</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  index->nlist,</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  config),</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  ivfpqConfig_(config),</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  subQuantizers_(0),</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  bitsPerCode_(0),</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  reserveMemoryVecs_(0),</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  index_(nullptr) {</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#ifndef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor"></span> FAISS_ASSERT(!ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#a9dbbec78d77d90b7b150f543e477cc49">useFloat16LookupTables</a>);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a8d48f79af9080b55706050244fc24f0e">copyFrom</a>(index);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> }</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div>
<div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a245ae251f48cb435c7db18258c627b0a"> 45</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a56a552e8c2e29f33c39883145bd7629c">GpuIndexIVFPQ::GpuIndexIVFPQ</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordtype">int</span> dims,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">int</span> nlist,</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">int</span> subQuantizers,</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">int</span> bitsPerCode,</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html">GpuIndexIVFPQConfig</a> config) :</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html">GpuIndexIVF</a>(resources,</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  dims,</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  metric,</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  nlist,</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  config),</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  ivfpqConfig_(config),</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  subQuantizers_(subQuantizers),</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  bitsPerCode_(bitsPerCode),</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  reserveMemoryVecs_(0),</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  index_(nullptr) {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor">#ifndef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor"></span> FAISS_ASSERT(!useFloat16LookupTables_);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  verifySettings_();</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// FIXME make IP work fully</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  FAISS_ASSERT(this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_L2);</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// We haven't trained ourselves, so don't construct the PQ index yet</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> GpuIndexIVFPQ::~GpuIndexIVFPQ() {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">delete</span> index_;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> }</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a8d48f79af9080b55706050244fc24f0e"> 80</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a8d48f79af9080b55706050244fc24f0e">GpuIndexIVFPQ::copyFrom</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IndexIVFPQ.html">faiss::IndexIVFPQ</a>* index) {</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// FIXME: support this</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  FAISS_THROW_IF_NOT_MSG(index-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_L2,</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="stringliteral">"inner product unsupported"</span>);</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a94c2c171f9a2d27085dea9101067bdf2">GpuIndexIVF::copyFrom</a>(index);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// Clear out our old data</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">delete</span> index_;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  index_ = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  subQuantizers_ = index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16">pq</a>.<a class="code" href="structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41">M</a>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  bitsPerCode_ = index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16">pq</a>.<a class="code" href="structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5">nbits</a>;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// We only support this</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  FAISS_ASSERT(index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16">pq</a>.<a class="code" href="structfaiss_1_1ProductQuantizer.html#a13bf69a0dc7b4e45792d10f458e4a92d">byte_per_idx</a> == 1);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  FAISS_ASSERT(index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#afd13b471df293ae5a6e895704c69a4c3">by_residual</a>);</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  FAISS_ASSERT(index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a3093a0a3e128eafce6e0583b75e9662e">polysemous_ht</a> == 0);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#ae5b5c7acc06743e5bcca197bc33c30ec">usePrecomputedTables</a> = (bool) index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a1c66ff073c18a1edbe8444c24d870583">use_precomputed_table</a>;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  verifySettings_();</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// The other index might not be trained</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (!index-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>) {</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// Otherwise, we can populate ourselves from the other index</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// Copy our lists as well</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// The product quantizer must have data in it</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  FAISS_ASSERT(index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16">pq</a>.<a class="code" href="structfaiss_1_1ProductQuantizer.html#aab1109a29ba0544358e274d727b23cae">centroids</a>.size() > 0);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  index_ = <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html">IVFPQ</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7">getGpuData</a>(),</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  subQuantizers_,</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  bitsPerCode_,</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  (<span class="keywordtype">float</span>*) index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16">pq</a>.<a class="code" href="structfaiss_1_1ProductQuantizer.html#aab1109a29ba0544358e274d727b23cae">centroids</a>.data(),</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html#af432221761d48e4753f501208a60264d">indicesOptions</a>,</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#a9dbbec78d77d90b7b150f543e477cc49">useFloat16LookupTables</a>,</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#af304169eac7781b573f76d545f37b7d9">memorySpace_</a>);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// Doesn't make sense to reserve memory here</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html#adcee5dbf48c3cb6b8a67f5f392e155fd">setPrecomputedCodes</a>(ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#ae5b5c7acc06743e5bcca197bc33c30ec">usePrecomputedTables</a>);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// Copy database vectors, if any</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < index->codes.size(); ++i) {</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">auto</span>& codes = index->codes[i];</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">auto</span>& ids = index-><a class="code" href="structfaiss_1_1IndexIVF.html#af16d325f5bef22b2e5f90ceea796e80d">ids</a>[i];</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  FAISS_ASSERT(ids.size() * subQuantizers_ == codes.size());</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// GPU index can only support max int entries per list</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  FAISS_THROW_IF_NOT_FMT(ids.size() <=</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  (size_t) std::numeric_limits<int>::max(),</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="stringliteral">"GPU inverted list can only support "</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="stringliteral">"%zu entries; %zu found"</span>,</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  (size_t) std::numeric_limits<int>::max(),</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  ids.size());</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  index_->addCodeVectorsFromCpu(i, codes.data(), ids.data(), ids.size());</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  }</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#aad10de2407911e9adf42c1be5c5dd390"> 145</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#aad10de2407911e9adf42c1be5c5dd390">GpuIndexIVFPQ::copyTo</a>(<a class="code" href="structfaiss_1_1IndexIVFPQ.html">faiss::IndexIVFPQ</a>* index)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// We must have the indices in order to copy to ourselves</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  FAISS_THROW_IF_NOT_MSG(ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html#af432221761d48e4753f501208a60264d">indicesOptions</a> != INDICES_IVF,</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="stringliteral">"Cannot copy to CPU as GPU index doesn't retain "</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="stringliteral">"indices (INDICES_IVF)"</span>);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a1db0a796b8b2917d989952c5f07fbe55">GpuIndexIVF::copyTo</a>(index);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="comment">// IndexIVFPQ information</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#afd13b471df293ae5a6e895704c69a4c3">by_residual</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a1c66ff073c18a1edbe8444c24d870583">use_precomputed_table</a> = 0;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a31c6fb2faa4dadea4c0594338be7be90">code_size</a> = subQuantizers_;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16">pq</a> = <a class="code" href="structfaiss_1_1ProductQuantizer.html">faiss::ProductQuantizer</a>(this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, subQuantizers_, bitsPerCode_);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a9d5373633df7a9bec4de69400b9adeed">do_polysemous_training</a> = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a2b14cbb5acb3fc28a4df8fde3f5567cd">polysemous_training</a> = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a7430fc4fa030c96497abced3b68358d4">scan_table_threshold</a> = 0;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a77501995b3671e377102d2db1a93ade4">max_codes</a> = 0;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a3093a0a3e128eafce6e0583b75e9662e">polysemous_ht</a> = 0;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  index->codes.clear();</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  index->codes.resize(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a>);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a9b310195d610c3e326471b3758206b59">precomputed_table</a>.clear();</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">if</span> (index_) {</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">// Copy the inverted lists</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a>; ++i) {</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#af16d325f5bef22b2e5f90ceea796e80d">ids</a>[i] = <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a5235cf241ef98e6012fd01907ec705d0">getListIndices</a>(i);</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  index->codes[i] = <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a98f0000872701f9f23ac2073723a0aa7">getListCodes</a>(i);</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  }</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="comment">// Copy PQ centroids</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">auto</span> devPQCentroids = index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html#a3e8bff50f894c243c62e832f923e88e7">getPQCentroids</a>();</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16">pq</a>.<a class="code" href="structfaiss_1_1ProductQuantizer.html#aab1109a29ba0544358e274d727b23cae">centroids</a>.resize(devPQCentroids.numElements());</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  fromDevice<float, 3>(devPQCentroids,</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16">pq</a>.<a class="code" href="structfaiss_1_1ProductQuantizer.html#aab1109a29ba0544358e274d727b23cae">centroids</a>.data(),</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#a6c564198df6ba675920c993e2af34b8c">getDefaultStream</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>));</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">if</span> (ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#ae5b5c7acc06743e5bcca197bc33c30ec">usePrecomputedTables</a>) {</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  index-><a class="code" href="structfaiss_1_1IndexIVFPQ.html#ad99c215aeaf92e995cb97f4044c4d267">precompute_table</a>();</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  }</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> }</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a4e7d62e21f7e23fa4e94c69131389eea"> 195</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a4e7d62e21f7e23fa4e94c69131389eea">GpuIndexIVFPQ::reserveMemory</a>(<span class="keywordtype">size_t</span> numVecs) {</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  reserveMemoryVecs_ = numVecs;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">if</span> (index_) {</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a02e1e2d080ee31bf7835f89b9f2a13a9">reserveMemory</a>(numVecs);</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> }</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#afda2894c0ce520e0d3d06eeca5ed5f0c"> 204</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#afda2894c0ce520e0d3d06eeca5ed5f0c">GpuIndexIVFPQ::setPrecomputedCodes</a>(<span class="keywordtype">bool</span> enable) {</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#ae5b5c7acc06743e5bcca197bc33c30ec">usePrecomputedTables</a> = enable;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">if</span> (index_) {</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>);</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html#adcee5dbf48c3cb6b8a67f5f392e155fd">setPrecomputedCodes</a>(enable);</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  }</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  verifySettings_();</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> }</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a679b0aaa229d571aeb842673e3493cc5"> 215</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a679b0aaa229d571aeb842673e3493cc5">GpuIndexIVFPQ::getPrecomputedCodes</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">return</span> ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#ae5b5c7acc06743e5bcca197bc33c30ec">usePrecomputedTables</a>;</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> }</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a3869ea7898487334fb67ee499f38988d"> 220</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a3869ea7898487334fb67ee499f38988d">GpuIndexIVFPQ::getNumSubQuantizers</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">return</span> subQuantizers_;</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> }</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#af87058de254e1430587a16b76f1e4377"> 225</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#af87058de254e1430587a16b76f1e4377">GpuIndexIVFPQ::getBitsPerCode</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">return</span> bitsPerCode_;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> }</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> </div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a2f50e79af6727962cd89534438d4769e"> 230</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a2f50e79af6727962cd89534438d4769e">GpuIndexIVFPQ::getCentroidsPerSubQuantizer</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">return</span> utils::pow2(bitsPerCode_);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> }</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="keywordtype">size_t</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a83831088d9593f753560965172ccb0a0"> 235</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a83831088d9593f753560965172ccb0a0">GpuIndexIVFPQ::reclaimMemory</a>() {</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">if</span> (index_) {</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>);</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">return</span> index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#ac9b69e1b2582cb2c064b5fff60d31cc8">reclaimMemory</a>();</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  }</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> }</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a3a43a70461e09ef87bdb7b48ec420dd2"> 245</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a3a43a70461e09ef87bdb7b48ec420dd2">GpuIndexIVFPQ::reset</a>() {</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</span> (index_) {</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>);</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> </div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a7ea671876443c93436499ad581f16997">reset</a>();</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = 0;</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  FAISS_ASSERT(this-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> == 0);</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  }</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> }</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> </div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> GpuIndexIVFPQ::trainResidualQuantizer_(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) {</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="comment">// Code largely copied from faiss::IndexIVFPQ</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="comment">// FIXME: GPUize more of this</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  n = std::min(n, (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a>) (1 << bitsPerCode_) * 64);</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> </div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  printf(<span class="stringliteral">"computing residuals\n"</span>);</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  }</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> </div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  std::vector<Index::idx_t> <a class="code" href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">assign</a>(n);</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">assign</a> (n, x, <a class="code" href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">assign</a>.data());</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  std::vector<float> residuals(n * <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>);</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordflow">for</span> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a> i = 0; i < n; i++) {</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="structfaiss_1_1Index.html#aaae77608bbda70b1098897e9167a82f9">compute_residual</a>(x + i * <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, &residuals[i * d], <a class="code" href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">assign</a>[i]);</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  }</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  printf(<span class="stringliteral">"training %d x %d product quantizer on %ld vectors in %dD\n"</span>,</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  subQuantizers_, <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a2f50e79af6727962cd89534438d4769e">getCentroidsPerSubQuantizer</a>(), n, this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>);</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  }</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="comment">// Just use the CPU product quantizer to determine sub-centroids</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <a class="code" href="structfaiss_1_1ProductQuantizer.html">faiss::ProductQuantizer</a> pq(this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, subQuantizers_, bitsPerCode_);</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  pq.verbose = this-><a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>;</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  pq.train(n, residuals.data());</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  index_ = <span class="keyword">new</span> IVFPQ(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7">getGpuData</a>(),</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  subQuantizers_,</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  bitsPerCode_,</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  pq.centroids.data(),</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html#af432221761d48e4753f501208a60264d">indicesOptions</a>,</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#a9dbbec78d77d90b7b150f543e477cc49">useFloat16LookupTables</a>,</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#af304169eac7781b573f76d545f37b7d9">memorySpace_</a>);</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">if</span> (reserveMemoryVecs_) {</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a02e1e2d080ee31bf7835f89b9f2a13a9">reserveMemory</a>(reserveMemoryVecs_);</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  }</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> </div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html#adcee5dbf48c3cb6b8a67f5f392e155fd">setPrecomputedCodes</a>(ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#ae5b5c7acc06743e5bcca197bc33c30ec">usePrecomputedTables</a>);</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> }</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> </div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#ac4814acafa4bc340a4c4bdcafd469b56"> 301</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#ac4814acafa4bc340a4c4bdcafd469b56">GpuIndexIVFPQ::train</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) {</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>);</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> </div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>) {</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  FAISS_ASSERT(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  FAISS_ASSERT(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> == <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a>);</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  FAISS_ASSERT(index_);</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  }</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  FAISS_ASSERT(!index_);</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  trainQuantizer_(n, x);</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  trainResidualQuantizer_(n, x);</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> </div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> }</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> </div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00320"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a50e74f0621ca2fe5688825f434ad2bb2"> 320</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a50e74f0621ca2fe5688825f434ad2bb2">GpuIndexIVFPQ::addImpl_</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n,</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a>* xids) {</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="comment">// Device is already set in GpuIndex::addInternal_</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  FAISS_ASSERT(index_);</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  FAISS_ASSERT(n > 0);</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keyword">auto</span> stream = <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#aa0354aa570c24e17a9f8a6a45b153ed2">getDefaultStreamCurrentDevice</a>();</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span> </div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keyword">auto</span> deviceVecs =</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  toDevice<float, 2>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>,</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keyword">const_cast<</span><span class="keywordtype">float</span>*<span class="keyword">></span>(x),</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  stream,</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  {(int) n, index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a4d44e8aebc380b7c846a8d8e6e835540">getDim</a>()});</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> </div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keyword">auto</span> deviceIndices =</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  toDevice<Index::idx_t, 1>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>,</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keyword">const_cast<</span><a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a>*<span class="keyword">></span>(xids),</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  stream,</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  {(int) n});</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="comment">// Not all vectors may be able to be added (some may contain NaNs</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="comment">// etc)</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> += index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html#ab1e07b04b25569cc58c5f3f033f4dab3">classifyAndAddVectors</a>(deviceVecs, deviceIndices);</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> }</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> </div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00349"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a42f619bee6ecb268442c7807e75896fe"> 349</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a42f619bee6ecb268442c7807e75896fe">GpuIndexIVFPQ::searchImpl_</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> n,</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> k,</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keywordtype">float</span>* distances,</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>* labels)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="comment">// Device is already set in GpuIndex::search</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> </div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  FAISS_ASSERT(index_);</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  FAISS_ASSERT(n > 0);</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="comment">// Make sure arguments are on the device we desire; use temporary</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="comment">// memory allocations to move it if necessary</span></div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keyword">auto</span> devX =</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  toDevice<float, 2>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>,</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keyword">const_cast<</span><span class="keywordtype">float</span>*<span class="keyword">></span>(x),</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  resources_->getDefaultStream(device_),</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  {(int) n, index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a4d44e8aebc380b7c846a8d8e6e835540">getDim</a>()});</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keyword">auto</span> devDistances =</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  toDevice<float, 2>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>,</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  distances,</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  resources_->getDefaultStream(device_),</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  {(int) n, (<span class="keywordtype">int</span>) k});</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keyword">auto</span> devLabels =</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  toDevice<faiss::Index::idx_t, 2>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>,</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  labels,</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  resources_->getDefaultStream(device_),</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  {(int) n, (<span class="keywordtype">int</span>) k});</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span> </div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html#ab0c458aab9a3d903f31b0e63ce16e623">query</a>(devX,</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a187bdcbbac02bf8fd0e6bb40a1c0426b">nprobe_</a>,</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  (<span class="keywordtype">int</span>) k,</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  devDistances,</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  devLabels);</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span> </div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="comment">// Copy back if necessary</span></div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  fromDevice<float, 2>(</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  devDistances, distances, resources_->getDefaultStream(device_));</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  fromDevice<faiss::Index::idx_t, 2>(</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  devLabels, labels, resources_->getDefaultStream(device_));</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> }</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00394"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#ab7f77961857e560b4dbb81888a8c8bf8"> 394</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#ab7f77961857e560b4dbb81888a8c8bf8">GpuIndexIVFPQ::getListLength</a>(<span class="keywordtype">int</span> listId)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  FAISS_ASSERT(index_);</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keywordflow">return</span> index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a7b1ee21f9919fb077db5e48e91943582">getListLength</a>(listId);</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> }</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> std::vector<unsigned char></div>
<div class="line"><a name="l00400"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a98f0000872701f9f23ac2073723a0aa7"> 400</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a98f0000872701f9f23ac2073723a0aa7">GpuIndexIVFPQ::getListCodes</a>(<span class="keywordtype">int</span> listId)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  FAISS_ASSERT(index_);</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(device_);</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span> </div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keywordflow">return</span> index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html#a5b349dd021b11b5f48531825359b0657">getListCodes</a>(listId);</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> }</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span> </div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> std::vector<long></div>
<div class="line"><a name="l00408"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a5235cf241ef98e6012fd01907ec705d0"> 408</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a5235cf241ef98e6012fd01907ec705d0">GpuIndexIVFPQ::getListIndices</a>(<span class="keywordtype">int</span> listId)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  FAISS_ASSERT(index_);</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(device_);</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> </div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="keywordflow">return</span> index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a4a4ed220b9433aa788ed32db8f20a9db">getListIndices</a>(listId);</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> }</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> GpuIndexIVFPQ::verifySettings_()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="comment">// Our implementation has these restrictions:</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> </div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="comment">// Must have some number of lists</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  FAISS_THROW_IF_NOT_MSG(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a> > 0, <span class="stringliteral">"nlist must be >0"</span>);</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> </div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="comment">// up to a single byte per code</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  FAISS_THROW_IF_NOT_FMT(bitsPerCode_ <= 8,</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="stringliteral">"Bits per code must be <= 8 (passed %d)"</span>, bitsPerCode_);</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> </div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="comment">// Sub-quantizers must evenly divide dimensions available</span></div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  FAISS_THROW_IF_NOT_FMT(this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a> % subQuantizers_ == 0,</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="stringliteral">"Number of sub-quantizers (%d) must be an "</span></div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="stringliteral">"even divisor of the number of dimensions (%d)"</span>,</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  subQuantizers_, this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>);</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span> </div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="comment">// The number of bytes per encoded vector must be one we support</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  FAISS_THROW_IF_NOT_FMT(<a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html#adb58eeacdceb0e0fde1820ca7f116e05">IVFPQ::isSupportedPQCodeLength</a>(subQuantizers_),</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="stringliteral">"Number of bytes per encoded vector / sub-quantizers (%d) "</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="stringliteral">"is not supported"</span>,</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  subQuantizers_);</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> </div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="comment">// We must have enough shared memory on the current device to store</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="comment">// our lookup distances</span></div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="keywordtype">int</span> lookupTableSize = <span class="keyword">sizeof</span>(float);</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#a9dbbec78d77d90b7b150f543e477cc49">useFloat16LookupTables</a>) {</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  lookupTableSize = <span class="keyword">sizeof</span>(half);</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  }</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="comment">// 64 bytes per code is only supported with usage of float16, at 2^8</span></div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="comment">// codes per subquantizer</span></div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordtype">size_t</span> requiredSmemSize =</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  lookupTableSize * subQuantizers_ * utils::pow2(bitsPerCode_);</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordtype">size_t</span> smemPerBlock = getMaxSharedMemPerBlock(device_);</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span> </div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  FAISS_THROW_IF_NOT_FMT(requiredSmemSize</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <= getMaxSharedMemPerBlock(device_),</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="stringliteral">"Device %d has %zu bytes of shared memory, while "</span></div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="stringliteral">"%d bits per code and %d sub-quantizers requires %zu "</span></div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="stringliteral">"bytes. Consider useFloat16LookupTables and/or "</span></div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="stringliteral">"reduce parameters"</span>,</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  device_, smemPerBlock, bitsPerCode_, subQuantizers_,</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  requiredSmemSize);</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> </div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="comment">// If precomputed codes are disabled, we have an extra limitation in</span></div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="comment">// terms of the number of dimensions per subquantizer</span></div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  FAISS_THROW_IF_NOT_FMT(ivfpqConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#ae5b5c7acc06743e5bcca197bc33c30ec">usePrecomputedTables</a> ||</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <a class="code" href="classfaiss_1_1gpu_1_1IVFPQ.html#a0eedf0295ad73125ee1254173a176674">IVFPQ::isSupportedNoPrecomputedSubDimSize</a>(</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  this->d / subQuantizers_),</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="stringliteral">"Number of dimensions per sub-quantizer (%d) "</span></div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="stringliteral">"is not currently supported without precomputed codes. "</span></div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="stringliteral">"Only 1, 2, 3, 4, 6, 8, 10, 12, 16, 20, 24, 28, 32 dims "</span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="stringliteral">"per sub-quantizer are currently supported with no "</span></div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="stringliteral">"precomputed codes. "</span></div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="stringliteral">"Precomputed codes supports any number of dimensions, but "</span></div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="stringliteral">"will involve memory overheads."</span>,</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  this->d / subQuantizers_);</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> </div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="comment">// TODO: fully implement METRIC_INNER_PRODUCT</span></div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  FAISS_THROW_IF_NOT_MSG(this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_L2,</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="stringliteral">"METRIC_INNER_PRODUCT is currently unsupported"</span>);</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span> }</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> </div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span> } } <span class="comment">// namespace</span></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a5235cf241ef98e6012fd01907ec705d0"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a5235cf241ef98e6012fd01907ec705d0">faiss::gpu::GpuIndexIVFPQ::getListIndices</a></div><div class="ttdeci">std::vector< long > getListIndices(int listId) const </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00408">GpuIndexIVFPQ.cu:408</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a42f619bee6ecb268442c7807e75896fe"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a42f619bee6ecb268442c7807e75896fe">faiss::gpu::GpuIndexIVFPQ::searchImpl_</a></div><div class="ttdeci">void searchImpl_(faiss::Index::idx_t n, const float *x, faiss::Index::idx_t k, float *distances, faiss::Index::idx_t *labels) const override</div><div class="ttdoc">Called from GpuIndex for search. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00349">GpuIndexIVFPQ.cu:349</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_ad99c215aeaf92e995cb97f4044c4d267"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#ad99c215aeaf92e995cb97f4044c4d267">faiss::IndexIVFPQ::precompute_table</a></div><div class="ttdeci">void precompute_table()</div><div class="ttdoc">build precomputed table </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8cpp_source.html#l00391">IndexIVFPQ.cpp:391</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a3a43a70461e09ef87bdb7b48ec420dd2"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a3a43a70461e09ef87bdb7b48ec420dd2">faiss::gpu::GpuIndexIVFPQ::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00245">GpuIndexIVFPQ.cu:245</a></div></div>
<div class="ttc" id="structfaiss_1_1ProductQuantizer_html_ac920fea11f02e8407d12cc99a09f5ea5"><div class="ttname"><a href="structfaiss_1_1ProductQuantizer.html#ac920fea11f02e8407d12cc99a09f5ea5">faiss::ProductQuantizer::nbits</a></div><div class="ttdeci">size_t nbits</div><div class="ttdoc">number of bits per quantization index </div><div class="ttdef"><b>Definition:</b> <a href="ProductQuantizer_8h_source.html#l00029">ProductQuantizer.h:29</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuResources_html_aa0354aa570c24e17a9f8a6a45b153ed2"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuResources.html#aa0354aa570c24e17a9f8a6a45b153ed2">faiss::gpu::GpuResources::getDefaultStreamCurrentDevice</a></div><div class="ttdeci">cudaStream_t getDefaultStreamCurrentDevice()</div><div class="ttdoc">Calls getDefaultStream with the current device. </div><div class="ttdef"><b>Definition:</b> <a href="GpuResources_8cpp_source.html#l00025">GpuResources.cpp:25</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig_html_ae5b5c7acc06743e5bcca197bc33c30ec"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#ae5b5c7acc06743e5bcca197bc33c30ec">faiss::gpu::GpuIndexIVFPQConfig::usePrecomputedTables</a></div><div class="ttdeci">bool usePrecomputedTables</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8h_source.html#l00036">GpuIndexIVFPQ.h:36</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a2b14cbb5acb3fc28a4df8fde3f5567cd"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a2b14cbb5acb3fc28a4df8fde3f5567cd">faiss::IndexIVFPQ::polysemous_training</a></div><div class="ttdeci">PolysemousTraining * polysemous_training</div><div class="ttdoc">if NULL, use default </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00036">IndexIVFPQ.h:36</a></div></div>
<div class="ttc" id="structfaiss_1_1ProductQuantizer_html_a13bf69a0dc7b4e45792d10f458e4a92d"><div class="ttname"><a href="structfaiss_1_1ProductQuantizer.html#a13bf69a0dc7b4e45792d10f458e4a92d">faiss::ProductQuantizer::byte_per_idx</a></div><div class="ttdeci">size_t byte_per_idx</div><div class="ttdoc">nb bytes per code component (1 or 2) </div><div class="ttdef"><b>Definition:</b> <a href="ProductQuantizer_8h_source.html#l00033">ProductQuantizer.h:33</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a56a552e8c2e29f33c39883145bd7629c"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a56a552e8c2e29f33c39883145bd7629c">faiss::gpu::GpuIndexIVFPQ::GpuIndexIVFPQ</a></div><div class="ttdeci">GpuIndexIVFPQ(GpuResources *resources, const faiss::IndexIVFPQ *index, GpuIndexIVFPQConfig config=GpuIndexIVFPQConfig())</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00025">GpuIndexIVFPQ.cu:25</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a4d44e8aebc380b7c846a8d8e6e835540"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a4d44e8aebc380b7c846a8d8e6e835540">faiss::gpu::IVFBase::getDim</a></div><div class="ttdeci">int getDim() const </div><div class="ttdoc">Return the number of dimensions we are indexing. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00100">IVFBase.cu:100</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a7b1ee21f9919fb077db5e48e91943582"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a7b1ee21f9919fb077db5e48e91943582">faiss::gpu::IVFBase::getListLength</a></div><div class="ttdeci">int getListLength(int listId) const </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00200">IVFBase.cu:200</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a310b00d4443920a855b11276d488c9a7"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7">faiss::gpu::GpuIndexFlat::getGpuData</a></div><div class="ttdeci">FlatIndex * getGpuData()</div><div class="ttdoc">For internal access. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00120">GpuIndexFlat.h:120</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c"><div class="ttname"><a href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">faiss::Index::assign</a></div><div class="ttdeci">void assign(idx_t n, const float *x, idx_t *labels, idx_t k=1)</div><div class="ttdef"><b>Definition:</b> <a href="Index_8cpp_source.html#l00023">Index.cpp:23</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a02e1e2d080ee31bf7835f89b9f2a13a9"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a02e1e2d080ee31bf7835f89b9f2a13a9">faiss::gpu::IVFBase::reserveMemory</a></div><div class="ttdeci">void reserveMemory(size_t numVecs)</div><div class="ttdoc">Reserve GPU memory in our inverted lists for this number of vectors. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00045">IVFBase.cu:45</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_ab7f77961857e560b4dbb81888a8c8bf8"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#ab7f77961857e560b4dbb81888a8c8bf8">faiss::gpu::GpuIndexIVFPQ::getListLength</a></div><div class="ttdeci">int getListLength(int listId) const </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00394">GpuIndexIVFPQ.cu:394</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a9d5373633df7a9bec4de69400b9adeed"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a9d5373633df7a9bec4de69400b9adeed">faiss::IndexIVFPQ::do_polysemous_training</a></div><div class="ttdeci">bool do_polysemous_training</div><div class="ttdoc">reorder PQ centroids after training? </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00035">IndexIVFPQ.h:35</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a7430fc4fa030c96497abced3b68358d4"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a7430fc4fa030c96497abced3b68358d4">faiss::IndexIVFPQ::scan_table_threshold</a></div><div class="ttdeci">size_t scan_table_threshold</div><div class="ttdoc">use table computation or on-the-fly? </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00039">IndexIVFPQ.h:39</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a9b310195d610c3e326471b3758206b59"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a9b310195d610c3e326471b3758206b59">faiss::IndexIVFPQ::precomputed_table</a></div><div class="ttdeci">std::vector< float > precomputed_table</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00047">IndexIVFPQ.h:47</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a3093a0a3e128eafce6e0583b75e9662e"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a3093a0a3e128eafce6e0583b75e9662e">faiss::IndexIVFPQ::polysemous_ht</a></div><div class="ttdeci">int polysemous_ht</div><div class="ttdoc">Hamming thresh for polysemous filtering. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00041">IndexIVFPQ.h:41</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuResources_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuResources.html">faiss::gpu::GpuResources</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuResources_8h_source.html#l00023">GpuResources.h:23</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_af87058de254e1430587a16b76f1e4377"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#af87058de254e1430587a16b76f1e4377">faiss::gpu::GpuIndexIVFPQ::getBitsPerCode</a></div><div class="ttdeci">int getBitsPerCode() const </div><div class="ttdoc">Return the number of bits per PQ code. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00225">GpuIndexIVFPQ.cu:225</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig_html_a9dbbec78d77d90b7b150f543e477cc49"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html#a9dbbec78d77d90b7b150f543e477cc49">faiss::gpu::GpuIndexIVFPQConfig::useFloat16LookupTables</a></div><div class="ttdeci">bool useFloat16LookupTables</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8h_source.html#l00032">GpuIndexIVFPQ.h:32</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuResources_html_a6c564198df6ba675920c993e2af34b8c"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuResources.html#a6c564198df6ba675920c993e2af34b8c">faiss::gpu::GpuResources::getDefaultStream</a></div><div class="ttdeci">virtual cudaStream_t getDefaultStream(int device)=0</div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_af16d325f5bef22b2e5f90ceea796e80d"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#af16d325f5bef22b2e5f90ceea796e80d">faiss::IndexIVF::ids</a></div><div class="ttdeci">std::vector< std::vector< long > > ids</div><div class="ttdoc">Inverted lists for indexes. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00055">IndexIVF.h:55</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html">faiss::gpu::GpuIndexIVF</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00037">GpuIndexIVF.h:37</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d"><div class="ttname"><a href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">faiss::Index::d</a></div><div class="ttdeci">int d</div><div class="ttdoc">vector dimension </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00064">Index.h:64</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_ac4814acafa4bc340a4c4bdcafd469b56"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#ac4814acafa4bc340a4c4bdcafd469b56">faiss::gpu::GpuIndexIVFPQ::train</a></div><div class="ttdeci">void train(Index::idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00301">GpuIndexIVFPQ.cu:301</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a77501995b3671e377102d2db1a93ade4"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a77501995b3671e377102d2db1a93ade4">faiss::IndexIVFPQ::max_codes</a></div><div class="ttdeci">size_t max_codes</div><div class="ttdoc">max nb of codes to visit to do a query </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00040">IndexIVFPQ.h:40</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFPQ_html_adb58eeacdceb0e0fde1820ca7f116e05"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFPQ.html#adb58eeacdceb0e0fde1820ca7f116e05">faiss::gpu::IVFPQ::isSupportedPQCodeLength</a></div><div class="ttdeci">static bool isSupportedPQCodeLength(int size)</div><div class="ttdoc">Returns true if we support PQ in this size. </div><div class="ttdef"><b>Definition:</b> <a href="IVFPQ_8cu_source.html#l00072">IVFPQ.cu:72</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a83831088d9593f753560965172ccb0a0"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a83831088d9593f753560965172ccb0a0">faiss::gpu::GpuIndexIVFPQ::reclaimMemory</a></div><div class="ttdeci">size_t reclaimMemory()</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00235">GpuIndexIVFPQ.cu:235</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig_html"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFPQConfig.html">faiss::gpu::GpuIndexIVFPQConfig</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8h_source.html#l00023">GpuIndexIVFPQ.h:23</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html">faiss::IndexIVFPQ</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00029">IndexIVFPQ.h:29</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_a187bdcbbac02bf8fd0e6bb40a1c0426b"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a187bdcbbac02bf8fd0e6bb40a1c0426b">faiss::gpu::GpuIndexIVF::nprobe_</a></div><div class="ttdeci">int nprobe_</div><div class="ttdoc">Number of inverted list probes per query. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00091">GpuIndexIVF.h:91</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a4e7d62e21f7e23fa4e94c69131389eea"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a4e7d62e21f7e23fa4e94c69131389eea">faiss::gpu::GpuIndexIVFPQ::reserveMemory</a></div><div class="ttdeci">void reserveMemory(size_t numVecs)</div><div class="ttdoc">Reserve GPU memory in our inverted lists for this number of vectors. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00195">GpuIndexIVFPQ.cu:195</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFPQ_html_ab1e07b04b25569cc58c5f3f033f4dab3"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFPQ.html#ab1e07b04b25569cc58c5f3f033f4dab3">faiss::gpu::IVFPQ::classifyAndAddVectors</a></div><div class="ttdeci">int classifyAndAddVectors(Tensor< float, 2, true > &vecs, Tensor< long, 1, true > &indices)</div><div class="ttdef"><b>Definition:</b> <a href="IVFPQ_8cu_source.html#l00120">IVFPQ.cu:120</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFPQ_html_ab0c458aab9a3d903f31b0e63ce16e623"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFPQ.html#ab0c458aab9a3d903f31b0e63ce16e623">faiss::gpu::IVFPQ::query</a></div><div class="ttdeci">void query(Tensor< float, 2, true > &queries, int nprobe, int k, Tensor< float, 2, true > &outDistances, Tensor< long, 2, true > &outIndices)</div><div class="ttdef"><b>Definition:</b> <a href="IVFPQ_8cu_source.html#l00519">IVFPQ.cu:519</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndex_html_a67750633faa35677ee505a1e61cfe142"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">faiss::gpu::GpuIndex::device_</a></div><div class="ttdeci">const int device_</div><div class="ttdoc">The GPU device we are resident on. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndex_8h_source.html#l00094">GpuIndex.h:94</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a8d48f79af9080b55706050244fc24f0e"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a8d48f79af9080b55706050244fc24f0e">faiss::gpu::GpuIndexIVFPQ::copyFrom</a></div><div class="ttdeci">void copyFrom(const faiss::IndexIVFPQ *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00080">GpuIndexIVFPQ.cu:80</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFPQ_html_a3e8bff50f894c243c62e832f923e88e7"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFPQ.html#a3e8bff50f894c243c62e832f923e88e7">faiss::gpu::IVFPQ::getPQCentroids</a></div><div class="ttdeci">Tensor< float, 3, true > getPQCentroids()</div><div class="ttdef"><b>Definition:</b> <a href="IVFPQ_8cu_source.html#l00594">IVFPQ.cu:594</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndex_html_a17b82a8a11783da6eb1b07c9aab98c36"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">faiss::gpu::GpuIndex::resources_</a></div><div class="ttdeci">GpuResources * resources_</div><div class="ttdoc">Manages streans, cuBLAS handles and scratch memory for devices. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndex_8h_source.html#l00091">GpuIndex.h:91</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_a1db0a796b8b2917d989952c5f07fbe55"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a1db0a796b8b2917d989952c5f07fbe55">faiss::gpu::GpuIndexIVF::copyTo</a></div><div class="ttdeci">void copyTo(faiss::IndexIVF *index) const </div><div class="ttdoc">Copy what we have to the CPU equivalent. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8cu_source.html#l00148">GpuIndexIVF.cu:148</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a040c6aed1f224f3ea7bf58eebc0c31a4"><div class="ttname"><a href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_aba606c141e714fab843493cc58167494"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">faiss::gpu::GpuIndexIVF::nlist_</a></div><div class="ttdeci">int nlist_</div><div class="ttdoc">Number of inverted lists that we manage. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00088">GpuIndexIVF.h:88</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a50e74f0621ca2fe5688825f434ad2bb2"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a50e74f0621ca2fe5688825f434ad2bb2">faiss::gpu::GpuIndexIVFPQ::addImpl_</a></div><div class="ttdeci">void addImpl_(faiss::Index::idx_t n, const float *x, const faiss::Index::idx_t *ids) override</div><div class="ttdoc">Called from GpuIndex for add/add_with_ids. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00320">GpuIndexIVFPQ.cu:320</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6970683faa021b7a6f1a0865c0d4eccd"><div class="ttname"><a href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">faiss::Index::ntotal</a></div><div class="ttdeci">idx_t ntotal</div><div class="ttdoc">total nb of indexed vectors </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00065">Index.h:65</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a5590d847c5c2b958affd2a05e58a6f23"><div class="ttname"><a href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">faiss::Index::verbose</a></div><div class="ttdeci">bool verbose</div><div class="ttdoc">verbosity level </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00066">Index.h:66</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFPQ_html_adcee5dbf48c3cb6b8a67f5f392e155fd"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFPQ.html#adcee5dbf48c3cb6b8a67f5f392e155fd">faiss::gpu::IVFPQ::setPrecomputedCodes</a></div><div class="ttdeci">void setPrecomputedCodes(bool enable)</div><div class="ttdoc">Enable or disable pre-computed codes. </div><div class="ttdef"><b>Definition:</b> <a href="IVFPQ_8cu_source.html#l00102">IVFPQ.cu:102</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFPQ_html_a5b349dd021b11b5f48531825359b0657"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFPQ.html#a5b349dd021b11b5f48531825359b0657">faiss::gpu::IVFPQ::getListCodes</a></div><div class="ttdeci">std::vector< unsigned char > getListCodes(int listId) const </div><div class="ttdoc">Return the list codes of a particular list back to the CPU. </div><div class="ttdef"><b>Definition:</b> <a href="IVFPQ_8cu_source.html#l00586">IVFPQ.cu:586</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_aad10de2407911e9adf42c1be5c5dd390"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#aad10de2407911e9adf42c1be5c5dd390">faiss::gpu::GpuIndexIVFPQ::copyTo</a></div><div class="ttdeci">void copyTo(faiss::IndexIVFPQ *index) const </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00145">GpuIndexIVFPQ.cu:145</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a7ea671876443c93436499ad581f16997"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a7ea671876443c93436499ad581f16997">faiss::gpu::IVFBase::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00075">IVFBase.cu:75</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1DeviceScope_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1DeviceScope.html">faiss::gpu::DeviceScope</a></div><div class="ttdef"><b>Definition:</b> <a href="DeviceUtils_8h_source.html#l00062">DeviceUtils.h:62</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndex_html_af304169eac7781b573f76d545f37b7d9"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndex.html#af304169eac7781b573f76d545f37b7d9">faiss::gpu::GpuIndex::memorySpace_</a></div><div class="ttdeci">const MemorySpace memorySpace_</div><div class="ttdoc">The memory space of our primary storage on the GPU. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndex_8h_source.html#l00097">GpuIndex.h:97</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_afd13b471df293ae5a6e895704c69a4c3"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#afd13b471df293ae5a6e895704c69a4c3">faiss::IndexIVFPQ::by_residual</a></div><div class="ttdeci">bool by_residual</div><div class="ttdoc">Encode residual or plain vector? </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00030">IndexIVFPQ.h:30</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_aaa7dd748e3cbd7ef68f2e384ac503eab"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">faiss::gpu::GpuIndexIVF::quantizer_</a></div><div class="ttdeci">GpuIndexFlat * quantizer_</div><div class="ttdoc">Quantizer for inverted lists. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00094">GpuIndexIVF.h:94</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a8e18f641854b2bde83ecff0a2f9a6f4e"><div class="ttname"><a href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">faiss::Index::metric_type</a></div><div class="ttdeci">MetricType metric_type</div><div class="ttdoc">type of metric this index uses for search </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00072">Index.h:72</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a007303be116c8da65b6d058e3fc77d16"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a007303be116c8da65b6d058e3fc77d16">faiss::IndexIVFPQ::pq</a></div><div class="ttdeci">ProductQuantizer pq</div><div class="ttdoc">produces the codes </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00033">IndexIVFPQ.h:33</a></div></div>
<div class="ttc" id="structfaiss_1_1ProductQuantizer_html_a83600e328893ce5f41fe459f5a3acf41"><div class="ttname"><a href="structfaiss_1_1ProductQuantizer.html#a83600e328893ce5f41fe459f5a3acf41">faiss::ProductQuantizer::M</a></div><div class="ttdeci">size_t M</div><div class="ttdoc">number of subquantizers </div><div class="ttdef"><b>Definition:</b> <a href="ProductQuantizer_8h_source.html#l00028">ProductQuantizer.h:28</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a3869ea7898487334fb67ee499f38988d"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a3869ea7898487334fb67ee499f38988d">faiss::gpu::GpuIndexIVFPQ::getNumSubQuantizers</a></div><div class="ttdeci">int getNumSubQuantizers() const </div><div class="ttdoc">Return the number of sub-quantizers we are using. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00220">GpuIndexIVFPQ.cu:220</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a4a4ed220b9433aa788ed32db8f20a9db"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a4a4ed220b9433aa788ed32db8f20a9db">faiss::gpu::IVFBase::getListIndices</a></div><div class="ttdeci">std::vector< long > getListIndices(int listId) const </div><div class="ttdoc">Return the list indices of a particular list back to the CPU. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00207">IVFBase.cu:207</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a2f50e79af6727962cd89534438d4769e"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a2f50e79af6727962cd89534438d4769e">faiss::gpu::GpuIndexIVFPQ::getCentroidsPerSubQuantizer</a></div><div class="ttdeci">int getCentroidsPerSubQuantizer() const </div><div class="ttdoc">Return the number of centroids per PQ code (2^bits per code) </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00230">GpuIndexIVFPQ.cu:230</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a31c6fb2faa4dadea4c0594338be7be90"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a31c6fb2faa4dadea4c0594338be7be90">faiss::IndexIVFPQ::code_size</a></div><div class="ttdeci">size_t code_size</div><div class="ttdoc">code size per vector in bytes </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00032">IndexIVFPQ.h:32</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_afda2894c0ce520e0d3d06eeca5ed5f0c"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#afda2894c0ce520e0d3d06eeca5ed5f0c">faiss::gpu::GpuIndexIVFPQ::setPrecomputedCodes</a></div><div class="ttdeci">void setPrecomputedCodes(bool enable)</div><div class="ttdoc">Enable or disable pre-computed codes. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00204">GpuIndexIVFPQ.cu:204</a></div></div>
<div class="ttc" id="structfaiss_1_1ProductQuantizer_html"><div class="ttname"><a href="structfaiss_1_1ProductQuantizer.html">faiss::ProductQuantizer</a></div><div class="ttdef"><b>Definition:</b> <a href="ProductQuantizer_8h_source.html#l00025">ProductQuantizer.h:25</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_a94c2c171f9a2d27085dea9101067bdf2"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a94c2c171f9a2d27085dea9101067bdf2">faiss::gpu::GpuIndexIVF::copyFrom</a></div><div class="ttdeci">void copyFrom(const faiss::IndexIVF *index)</div><div class="ttdoc">Copy what we need from the CPU equivalent. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8cu_source.html#l00080">GpuIndexIVF.cu:80</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6e92732617c4dbe364e7678dd8773a7f"><div class="ttname"><a href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">faiss::Index::is_trained</a></div><div class="ttdeci">bool is_trained</div><div class="ttdoc">set if the Index does not require training, or if training is done already </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00069">Index.h:69</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_aaae77608bbda70b1098897e9167a82f9"><div class="ttname"><a href="structfaiss_1_1Index.html#aaae77608bbda70b1098897e9167a82f9">faiss::Index::compute_residual</a></div><div class="ttdeci">void compute_residual(const float *x, float *residual, idx_t key) const </div><div class="ttdef"><b>Definition:</b> <a href="Index_8cpp_source.html#l00057">Index.cpp:57</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a679b0aaa229d571aeb842673e3493cc5"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a679b0aaa229d571aeb842673e3493cc5">faiss::gpu::GpuIndexIVFPQ::getPrecomputedCodes</a></div><div class="ttdeci">bool getPrecomputedCodes() const </div><div class="ttdoc">Are pre-computed codes enabled? </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00215">GpuIndexIVFPQ.cu:215</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFConfig_html_af432221761d48e4753f501208a60264d"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html#af432221761d48e4753f501208a60264d">faiss::gpu::GpuIndexIVFConfig::indicesOptions</a></div><div class="ttdeci">IndicesOptions indicesOptions</div><div class="ttdoc">Index storage options for the GPU. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00031">GpuIndexIVF.h:31</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_ac9b69e1b2582cb2c064b5fff60d31cc8"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#ac9b69e1b2582cb2c064b5fff60d31cc8">faiss::gpu::IVFBase::reclaimMemory</a></div><div class="ttdeci">size_t reclaimMemory()</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00105">IVFBase.cu:105</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFPQ_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFPQ.html">faiss::gpu::IVFPQ</a></div><div class="ttdoc">Implementing class for IVFPQ on the GPU. </div><div class="ttdef"><b>Definition:</b> <a href="IVFPQ_8cuh_source.html#l00019">IVFPQ.cuh:19</a></div></div>
<div class="ttc" id="namespacefaiss_html_afd12191c638da74760ff397cf319752c"><div class="ttname"><a href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a></div><div class="ttdeci">MetricType</div><div class="ttdoc">Some algorithms support both an inner product vetsion and a L2 search version. </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00043">Index.h:43</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a1c66ff073c18a1edbe8444c24d870583"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a1c66ff073c18a1edbe8444c24d870583">faiss::IndexIVFPQ::use_precomputed_table</a></div><div class="ttdeci">int use_precomputed_table</div><div class="ttdoc">if by_residual, build precompute tables </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00031">IndexIVFPQ.h:31</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html_a98f0000872701f9f23ac2073723a0aa7"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html#a98f0000872701f9f23ac2073723a0aa7">faiss::gpu::GpuIndexIVFPQ::getListCodes</a></div><div class="ttdeci">std::vector< unsigned char > getListCodes(int listId) const </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFPQ_8cu_source.html#l00400">GpuIndexIVFPQ.cu:400</a></div></div>
<div class="ttc" id="structfaiss_1_1ProductQuantizer_html_aab1109a29ba0544358e274d727b23cae"><div class="ttname"><a href="structfaiss_1_1ProductQuantizer.html#aab1109a29ba0544358e274d727b23cae">faiss::ProductQuantizer::centroids</a></div><div class="ttdeci">std::vector< float > centroids</div><div class="ttdoc">Centroid table, size M * ksub * dsub. </div><div class="ttdef"><b>Definition:</b> <a href="ProductQuantizer_8h_source.html#l00052">ProductQuantizer.h:52</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IVFPQ_html_a0eedf0295ad73125ee1254173a176674"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFPQ.html#a0eedf0295ad73125ee1254173a176674">faiss::gpu::IVFPQ::isSupportedNoPrecomputedSubDimSize</a></div><div class="ttdeci">static bool isSupportedNoPrecomputedSubDimSize(int dims)</div><div class="ttdef"><b>Definition:</b> <a href="IVFPQ_8cu_source.html#l00097">IVFPQ.cu:97</a></div></div>
</div><!-- fragment --></div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.5
</small></address>
</body>
</html>