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<li class="navelem"><a class="el" href="dir_6b3ae6988449b0834e9596fad5d75199.html">gpu</a></li><li class="navelem"><a class="el" href="dir_49d1182a3b8dfb62757c53ae905481ad.html">impl</a></li> </ul>
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<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 "FlatIndex.cuh"</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "Distance.cuh"</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "L2Norm.cuh"</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "../utils/CopyUtils.cuh"</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "../utils/DeviceUtils.h"</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "../utils/Transpose.cuh"</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> FlatIndex::FlatIndex(GpuResources* res,</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keywordtype">int</span> dim,</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keywordtype">bool</span> l2Distance,</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keywordtype">bool</span> useFloat16,</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keywordtype">bool</span> useFloat16Accumulator,</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keywordtype">bool</span> storeTransposed,</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  MemorySpace space) :</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  resources_(res),</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  dim_(dim),</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  useFloat16_(useFloat16),</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  useFloat16Accumulator_(useFloat16Accumulator),</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  storeTransposed_(storeTransposed),</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  l2Distance_(l2Distance),</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  space_(space),</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  num_(0),</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  rawData_(space) {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#ifndef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor"></span> FAISS_ASSERT(!useFloat16_);</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor"></span>}</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> FlatIndex::getUseFloat16()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> useFloat16_;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"></span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">/// Returns the number of vectors we contain</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1FlatIndex.html#a6988df17792dae30f24cc859728777e6"> 47</a></span> <span class="comment"></span><span class="keywordtype">int</span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html#a6988df17792dae30f24cc859728777e6">FlatIndex::getSize</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (useFloat16_) {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> vectorsHalf_.getSize(0);</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> vectors_.<a class="code" href="classfaiss_1_1gpu_1_1Tensor.html#a6699c311648457f257afa340c61f417c">getSize</a>(0);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="keywordtype">int</span> FlatIndex::getDim()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (useFloat16_) {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> vectorsHalf_.getSize(1);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> vectors_.<a class="code" href="classfaiss_1_1gpu_1_1Tensor.html#a6699c311648457f257afa340c61f417c">getSize</a>(1);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> }</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1FlatIndex.html#a7a06b678b97e3732939f6a4fb5106ef6"> 68</a></span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html#a7a06b678b97e3732939f6a4fb5106ef6">FlatIndex::reserve</a>(<span class="keywordtype">size_t</span> numVecs, cudaStream_t stream) {</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> (useFloat16_) {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor"></span> rawData_.reserve(numVecs * dim_ * <span class="keyword">sizeof</span>(half), stream);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor"></span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  rawData_.reserve(numVecs * dim_ * <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>), stream);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> }</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> <a class="code" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor<float, 2, true></a>&</div>
<div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1FlatIndex.html#a12058744ffb3fbcbb047872449269c06"> 79</a></span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html#a12058744ffb3fbcbb047872449269c06">FlatIndex::getVectorsFloat32Ref</a>() {</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> vectors_;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> }</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="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor"></span><a class="code" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor<half, 2, true></a>&</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> FlatIndex::getVectorsFloat16Ref() {</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> vectorsHalf_;</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="preprocessor">#endif</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> DeviceTensor<float, 2, true></div>
<div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1FlatIndex.html#a258b0dd61a9c352ec7d68fa8bac0d7ad"> 91</a></span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html#a258b0dd61a9c352ec7d68fa8bac0d7ad">FlatIndex::getVectorsFloat32Copy</a>(cudaStream_t stream) {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">return</span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html#a258b0dd61a9c352ec7d68fa8bac0d7ad">getVectorsFloat32Copy</a>(0, num_, stream);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> }</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> <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<float, 2, true></a></div>
<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1FlatIndex.html#a6057667e09193d786c25d90355d28838"> 96</a></span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html#a258b0dd61a9c352ec7d68fa8bac0d7ad">FlatIndex::getVectorsFloat32Copy</a>(<span class="keywordtype">int</span> from, <span class="keywordtype">int</span> num, cudaStream_t stream) {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<float, 2, true></a> vecFloat32({num, dim_}, space_);</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">if</span> (useFloat16_) {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor"></span> runConvertToFloat32(vecFloat32.data(),</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  vectorsHalf_[from].data(),</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  num * dim_, stream);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor"></span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  vectors_.<a class="code" href="classfaiss_1_1gpu_1_1Tensor.html#a6cc21376070a03d77661d6e333972c6a">copyTo</a>(vecFloat32, stream);</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> </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">return</span> vecFloat32;</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> </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> FlatIndex::query(<a class="code" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor<float, 2, true></a>& input,</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordtype">int</span> k,</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <a class="code" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor<float, 2, true></a>& outDistances,</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <a class="code" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor<int, 2, true></a>& outIndices,</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordtype">bool</span> exactDistance) {</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">auto</span> stream = resources_-><a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#aa0354aa570c24e17a9f8a6a45b153ed2">getDefaultStreamCurrentDevice</a>();</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">auto</span>& mem = resources_-><a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html#a1dda2dc3db1bd62cde6657c5cdbfb6e1">getMemoryManagerCurrentDevice</a>();</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">if</span> (useFloat16_) {</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// We need to convert to float16</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor"></span> <span class="keyword">auto</span> inputHalf = toHalf<2>(resources_, stream, input);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<half, 2, true></a> outDistancesHalf(</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  mem, {outDistances.<a class="code" href="classfaiss_1_1gpu_1_1Tensor.html#a6699c311648457f257afa340c61f417c">getSize</a>(0), outDistances.<a class="code" href="classfaiss_1_1gpu_1_1Tensor.html#a6699c311648457f257afa340c61f417c">getSize</a>(1)}, stream);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  query(inputHalf, k, outDistancesHalf, outIndices, exactDistance);</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">if</span> (exactDistance) {</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// Convert outDistances back</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  fromHalf<2>(stream, outDistancesHalf, outDistances);</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  }</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor"></span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">if</span> (l2Distance_) {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  runL2Distance(resources_,</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  vectors_,</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  storeTransposed_ ? &vectorsTransposed_ : <span class="keyword">nullptr</span>,</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  &norms_,</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  input,</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  k,</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  outDistances,</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  outIndices,</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">// FIXME</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  !exactDistance);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  runIPDistance(resources_,</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  vectors_,</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  storeTransposed_ ? &vectorsTransposed_ : <span class="keyword">nullptr</span>,</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  input,</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  k,</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  outDistances,</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  outIndices);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  }</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor"></span><span class="keywordtype">void</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> FlatIndex::query(Tensor<half, 2, true>& input,</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordtype">int</span> k,</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  Tensor<half, 2, true>& outDistances,</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  Tensor<int, 2, true>& outIndices,</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordtype">bool</span> exactDistance) {</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  FAISS_ASSERT(useFloat16_);</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">if</span> (l2Distance_) {</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  runL2Distance(resources_,</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  vectorsHalf_,</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  storeTransposed_ ? &vectorsHalfTransposed_ : <span class="keyword">nullptr</span>,</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  &normsHalf_,</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  input,</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  k,</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  outDistances,</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  outIndices,</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  useFloat16Accumulator_,</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// FIXME</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  !exactDistance);</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  runIPDistance(resources_,</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  vectorsHalf_,</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  storeTransposed_ ? &vectorsHalfTransposed_ : <span class="keyword">nullptr</span>,</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  input,</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  k,</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  outDistances,</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  outIndices,</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  useFloat16Accumulator_);</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> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="preprocessor"></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_1FlatIndex.html#ab91c9ddf7dd258620f424619cb029e22"> 195</a></span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html#ab91c9ddf7dd258620f424619cb029e22">FlatIndex::add</a>(<span class="keyword">const</span> <span class="keywordtype">float</span>* data, <span class="keywordtype">int</span> numVecs, cudaStream_t stream) {</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span> (numVecs == 0) {</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  }</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">if</span> (useFloat16_) {</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="preprocessor"></span> <span class="comment">// Make sure that `data` is on our device; we'll run the</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">// conversion on our device</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">auto</span> devData = toDevice<float, 2>(resources_,</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  getCurrentDevice(),</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  (<span class="keywordtype">float</span>*) data,</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  stream,</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  {numVecs, dim_});</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>  <span class="keyword">auto</span> devDataHalf = toHalf<2>(resources_, stream, devData);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  rawData_.append((<span class="keywordtype">char</span>*) devDataHalf.data(),</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  devDataHalf.getSizeInBytes(),</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  stream,</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keyword">true</span> <span class="comment">/* reserve exactly */</span>);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="preprocessor"></span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  rawData_.append((<span class="keywordtype">char</span>*) data,</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  (<span class="keywordtype">size_t</span>) dim_ * numVecs * <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>),</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  stream,</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keyword">true</span> <span class="comment">/* reserve exactly */</span>);</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>  num_ += numVecs;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">if</span> (useFloat16_) {</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="preprocessor"></span> <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<half, 2, true></a> vectorsHalf(</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  (half*) rawData_.data(), {(int) num_, dim_}, space_);</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  vectorsHalf_ = std::move(vectorsHalf);</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="preprocessor"></span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<float, 2, true></a> vectors(</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  (<span class="keywordtype">float</span>*) rawData_.data(), {(int) num_, dim_}, space_);</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  vectors_ = std::move(vectors);</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">if</span> (storeTransposed_) {</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span> (useFloat16_) {</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="preprocessor"></span> vectorsHalfTransposed_ =</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  std::move(<a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<half, 2, true></a>({dim_, (int) num_}, space_));</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  runTransposeAny(vectorsHalf_, 0, 1, vectorsHalfTransposed_, stream);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="preprocessor"></span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  vectorsTransposed_ =</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  std::move(<a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<float, 2, true></a>({dim_, (int) num_}, space_));</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  runTransposeAny(vectors_, 0, 1, vectorsTransposed_, stream);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  }</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  }</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> </div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordflow">if</span> (l2Distance_) {</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">// Precompute L2 norms of our database</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">if</span> (useFloat16_) {</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="preprocessor">#ifdef FAISS_USE_FLOAT16</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="preprocessor"></span> <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<half, 1, true></a> normsHalf({(int) num_}, space_);</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  runL2Norm(vectorsHalf_, normsHalf, <span class="keyword">true</span>, stream);</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  normsHalf_ = std::move(normsHalf);</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="preprocessor"></span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<float, 1, true></a> norms({(int) num_}, space_);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  runL2Norm(vectors_, norms, <span class="keyword">true</span>, stream);</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  norms_ = std::move(norms);</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> }</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> </div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1FlatIndex.html#ae06cb2ffd46659b6639b97297546096e"> 269</a></span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html#ae06cb2ffd46659b6639b97297546096e">FlatIndex::reset</a>() {</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  rawData_.clear();</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  vectors_ = std::move(<a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<float, 2, true></a>());</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  norms_ = std::move(<a class="code" href="classfaiss_1_1gpu_1_1DeviceTensor.html">DeviceTensor<float, 1, true></a>());</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  num_ = 0;</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> </div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> } }</div>
<div class="ttc" id="classfaiss_1_1gpu_1_1FlatIndex_html_a258b0dd61a9c352ec7d68fa8bac0d7ad"><div class="ttname"><a href="classfaiss_1_1gpu_1_1FlatIndex.html#a258b0dd61a9c352ec7d68fa8bac0d7ad">faiss::gpu::FlatIndex::getVectorsFloat32Copy</a></div><div class="ttdeci">DeviceTensor< float, 2, true > getVectorsFloat32Copy(cudaStream_t stream)</div><div class="ttdef"><b>Definition:</b> <a href="FlatIndex_8cu_source.html#l00091">FlatIndex.cu:91</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="classfaiss_1_1gpu_1_1FlatIndex_html_a6988df17792dae30f24cc859728777e6"><div class="ttname"><a href="classfaiss_1_1gpu_1_1FlatIndex.html#a6988df17792dae30f24cc859728777e6">faiss::gpu::FlatIndex::getSize</a></div><div class="ttdeci">int getSize() const </div><div class="ttdoc">Returns the number of vectors we contain. </div><div class="ttdef"><b>Definition:</b> <a href="FlatIndex_8cu_source.html#l00047">FlatIndex.cu:47</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuResources_html_a1dda2dc3db1bd62cde6657c5cdbfb6e1"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuResources.html#a1dda2dc3db1bd62cde6657c5cdbfb6e1">faiss::gpu::GpuResources::getMemoryManagerCurrentDevice</a></div><div class="ttdeci">DeviceMemory & getMemoryManagerCurrentDevice()</div><div class="ttdoc">Calls getMemoryManager for the current device. </div><div class="ttdef"><b>Definition:</b> <a href="GpuResources_8cpp_source.html#l00035">GpuResources.cpp:35</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1FlatIndex_html_a7a06b678b97e3732939f6a4fb5106ef6"><div class="ttname"><a href="classfaiss_1_1gpu_1_1FlatIndex.html#a7a06b678b97e3732939f6a4fb5106ef6">faiss::gpu::FlatIndex::reserve</a></div><div class="ttdeci">void reserve(size_t numVecs, cudaStream_t stream)</div><div class="ttdoc">Reserve storage that can contain at least this many vectors. </div><div class="ttdef"><b>Definition:</b> <a href="FlatIndex_8cu_source.html#l00068">FlatIndex.cu:68</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1FlatIndex_html_ab91c9ddf7dd258620f424619cb029e22"><div class="ttname"><a href="classfaiss_1_1gpu_1_1FlatIndex.html#ab91c9ddf7dd258620f424619cb029e22">faiss::gpu::FlatIndex::add</a></div><div class="ttdeci">void add(const float *data, int numVecs, cudaStream_t stream)</div><div class="ttdef"><b>Definition:</b> <a href="FlatIndex_8cu_source.html#l00195">FlatIndex.cu:195</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1Tensor_html_a6699c311648457f257afa340c61f417c"><div class="ttname"><a href="classfaiss_1_1gpu_1_1Tensor.html#a6699c311648457f257afa340c61f417c">faiss::gpu::Tensor::getSize</a></div><div class="ttdeci">__host__ __device__ IndexT getSize(int i) const </div><div class="ttdef"><b>Definition:</b> <a href="Tensor_8cuh_source.html#l00224">Tensor.cuh:224</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1Tensor_html_a6cc21376070a03d77661d6e333972c6a"><div class="ttname"><a href="classfaiss_1_1gpu_1_1Tensor.html#a6cc21376070a03d77661d6e333972c6a">faiss::gpu::Tensor::copyTo</a></div><div class="ttdeci">__host__ void copyTo(Tensor< T, Dim, InnerContig, IndexT, PtrTraits > &t, cudaStream_t stream)</div><div class="ttdoc">Copies ourselves into a tensor; sizes must match. </div><div class="ttdef"><b>Definition:</b> <a href="Tensor-inl_8cuh_source.html#l00171">Tensor-inl.cuh:171</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1Tensor_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1Tensor.html">faiss::gpu::Tensor</a></div><div class="ttdoc">Our tensor type. </div><div class="ttdef"><b>Definition:</b> <a href="Tensor_8cuh_source.html#l00030">Tensor.cuh:30</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1FlatIndex_html_a12058744ffb3fbcbb047872449269c06"><div class="ttname"><a href="classfaiss_1_1gpu_1_1FlatIndex.html#a12058744ffb3fbcbb047872449269c06">faiss::gpu::FlatIndex::getVectorsFloat32Ref</a></div><div class="ttdeci">Tensor< float, 2, true > & getVectorsFloat32Ref()</div><div class="ttdoc">Returns a reference to our vectors currently in use. </div><div class="ttdef"><b>Definition:</b> <a href="FlatIndex_8cu_source.html#l00079">FlatIndex.cu:79</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1FlatIndex_html_ae06cb2ffd46659b6639b97297546096e"><div class="ttname"><a href="classfaiss_1_1gpu_1_1FlatIndex.html#ae06cb2ffd46659b6639b97297546096e">faiss::gpu::FlatIndex::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdoc">Free all storage. </div><div class="ttdef"><b>Definition:</b> <a href="FlatIndex_8cu_source.html#l00269">FlatIndex.cu:269</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1DeviceTensor_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1DeviceTensor.html">faiss::gpu::DeviceTensor< float, 2, true ></a></div></div>
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