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  • matthijs's avatar
    sync with FB version 2017-11-22 · 0df3f646
    matthijs authored 
    various bugfixes from github issues
kmean with some frozen centroids
GPU better tiling for large flat datasets
default AVX for vector ops
    0df3f646
PerfClustering_8cpp_source.html 27.7 KB
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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_02dc1cf4df13911cc8cfd20f07047b71.html">perf</a></li>  </ul>
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<div class="title">PerfClustering.cpp</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<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>&#160;<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>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// Copyright 2004-present Facebook. All Rights Reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;../../utils.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &quot;../../Clustering.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &quot;../GpuIndexFlat.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &quot;../StandardGpuResources.h&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &quot;IndexWrapper.h&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &quot;../utils/DeviceUtils.h&quot;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &quot;../utils/Timer.h&quot;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;gflags/gflags.h&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;cuda_profiler_api.h&gt;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;DEFINE_int32(num, 10000, <span class="stringliteral">&quot;# of vecs&quot;</span>);</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;DEFINE_int32(k, 100, <span class="stringliteral">&quot;# of clusters&quot;</span>);</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;DEFINE_int32(dim, 128, <span class="stringliteral">&quot;# of dimensions&quot;</span>);</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;DEFINE_int32(niter, 10, <span class="stringliteral">&quot;# of iterations&quot;</span>);</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;DEFINE_bool(L2_metric, <span class="keyword">true</span>, <span class="stringliteral">&quot;If true, use L2 metric. If false, use IP metric&quot;</span>);</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;DEFINE_bool(use_float16, <span class="keyword">false</span>, <span class="stringliteral">&quot;use float16 vectors and math&quot;</span>);</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;DEFINE_bool(transposed, <span class="keyword">false</span>, <span class="stringliteral">&quot;transposed vector storage&quot;</span>);</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;DEFINE_bool(verbose, <span class="keyword">false</span>, <span class="stringliteral">&quot;turn on clustering logging&quot;</span>);</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;DEFINE_int64(seed, -1, <span class="stringliteral">&quot;specify random seed&quot;</span>);</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;DEFINE_int32(num_gpus, 1, <span class="stringliteral">&quot;number of gpus to use&quot;</span>);</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;DEFINE_int64(min_paging_size, -1, <span class="stringliteral">&quot;minimum size to use CPU -&gt; GPU paged copies&quot;</span>);</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;DEFINE_int64(pinned_mem, -1, <span class="stringliteral">&quot;pinned memory allocation to use&quot;</span>);</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;DEFINE_int32(max_points, -1, <span class="stringliteral">&quot;max points per centroid&quot;</span>);</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="keyword">using namespace </span>faiss::gpu;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>** argv) {</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;  gflags::ParseCommandLineFlags(&amp;argc, &amp;argv, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;  cudaProfilerStop();</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;  <span class="keyword">auto</span> seed = FLAGS_seed != -1L ? FLAGS_seed : time(<span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;  printf(<span class="stringliteral">&quot;using seed %ld\n&quot;</span>, seed);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  std::vector&lt;float&gt; vecs((<span class="keywordtype">size_t</span>) FLAGS_num * FLAGS_dim);</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;  faiss::float_rand(vecs.data(), vecs.size(), seed);</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  printf(<span class="stringliteral">&quot;K-means metric %s dim %d centroids %d num train %d niter %d\n&quot;</span>,</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;         FLAGS_L2_metric ? <span class="stringliteral">&quot;L2&quot;</span> : <span class="stringliteral">&quot;IP&quot;</span>,</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;         FLAGS_dim, FLAGS_k, FLAGS_num, FLAGS_niter);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;  printf(<span class="stringliteral">&quot;float16 math %s\n&quot;</span>, FLAGS_use_float16 ? <span class="stringliteral">&quot;enabled&quot;</span> : <span class="stringliteral">&quot;disabled&quot;</span>);</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  printf(<span class="stringliteral">&quot;transposed storage %s\n&quot;</span>, FLAGS_transposed ? <span class="stringliteral">&quot;enabled&quot;</span> : <span class="stringliteral">&quot;disabled&quot;</span>);</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;  printf(<span class="stringliteral">&quot;verbose %s\n&quot;</span>, FLAGS_verbose ? <span class="stringliteral">&quot;enabled&quot;</span> : <span class="stringliteral">&quot;disabled&quot;</span>);</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;  <span class="keyword">auto</span> initFn = [](<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">faiss::gpu::GpuResources</a>* res, <span class="keywordtype">int</span> dev) -&gt;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    std::unique_ptr&lt;faiss::gpu::GpuIndexFlat&gt; {</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="keywordflow">if</span> (FLAGS_pinned_mem &gt;= 0) {</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;      ((<a class="code" href="classfaiss_1_1gpu_1_1StandardGpuResources.html">faiss::gpu::StandardGpuResources</a>*) res)-&gt;setPinnedMemory(</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        FLAGS_pinned_mem);</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    }</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> config;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    config.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexConfig.html#aab05a0aa7b42feae7df4e556a52ead57">device</a> = dev;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    config.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#afd694186c87751937a646f3db2c8ba3d">useFloat16</a> = FLAGS_use_float16;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    config.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a0342a26f5e59563bfe04f3f80e3b27f0">storeTransposed</a> = FLAGS_transposed;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="keyword">auto</span> p = std::unique_ptr&lt;faiss::gpu::GpuIndexFlat&gt;(</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;      FLAGS_L2_metric ?</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;      (<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html">faiss::gpu::GpuIndexFlat</a>*)</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;      <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html">faiss::gpu::GpuIndexFlatL2</a>(res, FLAGS_dim, config) :</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;      (faiss::gpu::<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html">GpuIndexFlat</a>*)</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;      new faiss::gpu::<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html">GpuIndexFlatIP</a>(res, FLAGS_dim, config));</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    <span class="keywordflow">if</span> (FLAGS_min_paging_size &gt;= 0) {</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;      p-&gt;setMinPagingSize(FLAGS_min_paging_size);</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    }</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="keywordflow">return</span> p;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  };</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;  <a class="code" href="structfaiss_1_1gpu_1_1IndexWrapper.html">IndexWrapper&lt;faiss::gpu::GpuIndexFlat&gt;</a> gpuIndex(FLAGS_num_gpus, initFn);</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;  CUDA_VERIFY(cudaProfilerStart());</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;  faiss::gpu::synchronizeAllDevices();</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;  <span class="keywordtype">float</span> gpuTime = 0.0f;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;  <a class="code" href="structfaiss_1_1ClusteringParameters.html">faiss::ClusteringParameters</a> cp;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;  cp.<a class="code" href="structfaiss_1_1ClusteringParameters.html#a5c7c6f05c75e1668befdb3be148fd5f9">niter</a> = FLAGS_niter;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;  cp.verbose = FLAGS_verbose;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;  <span class="keywordflow">if</span> (FLAGS_max_points &gt; 0) {</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    cp.<a class="code" href="structfaiss_1_1ClusteringParameters.html#a993e0a035248faad6e292a5ef9af1953">max_points_per_centroid</a> = FLAGS_max_points;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;  }</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;  <a class="code" href="structfaiss_1_1Clustering.html">faiss::Clustering</a> kmeans(FLAGS_dim, FLAGS_k, cp);</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;  <span class="comment">// Time k-means</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;  {</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <a class="code" href="classfaiss_1_1gpu_1_1CpuTimer.html">CpuTimer</a> timer;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    kmeans.train(FLAGS_num, vecs.data(), *(gpuIndex.getIndex()));</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    <span class="comment">// There is a device -&gt; host copy above, so no need to time</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    <span class="comment">// additional synchronization with the GPU</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    gpuTime = timer.<a class="code" href="classfaiss_1_1gpu_1_1CpuTimer.html#a4a2795debf10bc7eb904d62356e41f0d">elapsedMilliseconds</a>();</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;  }</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;  CUDA_VERIFY(cudaProfilerStop());</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;  printf(<span class="stringliteral">&quot;k-means time %.3f ms\n&quot;</span>, gpuTime);</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;  CUDA_VERIFY(cudaDeviceSynchronize());</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;}</div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1CpuTimer_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1CpuTimer.html">faiss::gpu::CpuTimer</a></div><div class="ttdoc">CPU wallclock elapsed timer. </div><div class="ttdef"><b>Definition:</b> <a href="Timer_8h_source.html#l00042">Timer.h:42</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexFlatConfig_html_afd694186c87751937a646f3db2c8ba3d"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#afd694186c87751937a646f3db2c8ba3d">faiss::gpu::GpuIndexFlatConfig::useFloat16</a></div><div class="ttdeci">bool useFloat16</div><div class="ttdoc">Whether or not data is stored as float16. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00035">GpuIndexFlat.h:35</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexConfig_html_aab05a0aa7b42feae7df4e556a52ead57"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexConfig.html#aab05a0aa7b42feae7df4e556a52ead57">faiss::gpu::GpuIndexConfig::device</a></div><div class="ttdeci">int device</div><div class="ttdoc">GPU device on which the index is resident. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndex_8h_source.html#l00027">GpuIndex.h:27</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1StandardGpuResources_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1StandardGpuResources.html">faiss::gpu::StandardGpuResources</a></div><div class="ttdef"><b>Definition:</b> <a href="StandardGpuResources_8h_source.html#l00023">StandardGpuResources.h:23</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatL2_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html">faiss::gpu::GpuIndexFlatL2</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00169">GpuIndexFlat.h:169</a></div></div>
<div class="ttc" id="structfaiss_1_1ClusteringParameters_html"><div class="ttname"><a href="structfaiss_1_1ClusteringParameters.html">faiss::ClusteringParameters</a></div><div class="ttdef"><b>Definition:</b> <a href="Clustering_8h_source.html#l00024">Clustering.h:24</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html">faiss::gpu::GpuIndexFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00054">GpuIndexFlat.h:54</a></div></div>
<div class="ttc" id="structfaiss_1_1ClusteringParameters_html_a993e0a035248faad6e292a5ef9af1953"><div class="ttname"><a href="structfaiss_1_1ClusteringParameters.html#a993e0a035248faad6e292a5ef9af1953">faiss::ClusteringParameters::max_points_per_centroid</a></div><div class="ttdeci">int max_points_per_centroid</div><div class="ttdoc">to limit size of dataset </div><div class="ttdef"><b>Definition:</b> <a href="Clustering_8h_source.html#l00034">Clustering.h:34</a></div></div>
<div class="ttc" id="structfaiss_1_1gpu_1_1IndexWrapper_html"><div class="ttname"><a href="structfaiss_1_1gpu_1_1IndexWrapper.html">faiss::gpu::IndexWrapper</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexWrapper_8h_source.html#l00025">IndexWrapper.h:25</a></div></div>
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