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0df3f646fc
various bugfixes from github issues kmean with some frozen centroids GPU better tiling for large flat datasets default AVX for vector ops
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<li class="navelem"><a class="el" href="dir_6b3ae6988449b0834e9596fad5d75199.html">gpu</a></li> </ul>
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<div class="title">GpuIndexIVF.cu</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/**</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
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<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>
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<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>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Copyright 2004-present Facebook. All Rights Reserved.</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "GpuIndexIVF.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "../FaissAssert.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "../IndexFlat.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "../IndexIVF.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "GpuIndexFlat.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "utils/DeviceUtils.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "utils/Float16.cuh"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> GpuIndexIVF::GpuIndexIVF(GpuResources* resources,</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric,</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keywordtype">int</span> nlist,</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  GpuIndexIVFConfig config) :</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  GpuIndex(resources, dims, metric, config),</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  ivfConfig_(std::move(config)),</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  nlist_(nlist),</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  nprobe_(1),</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  quantizer_(nullptr) {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#ifndef FAISS_USE_FLOAT16</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"></span> FAISS_THROW_IF_NOT_MSG(!ivfConfig_.flatConfig.useFloat16CoarseQuantizer,</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="stringliteral">"float16 unsupported; need CUDA SDK >= 7.5"</span>);</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  init_();</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> }</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> GpuIndexIVF::init_() {</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  FAISS_ASSERT(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a> > 0);</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// Spherical by default if the metric is inner_product</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_INNER_PRODUCT) {</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  this-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a520803e209b44c904b876d6b8dad23c9">cp</a>.<a class="code" href="structfaiss_1_1ClusteringParameters.html#ad997fb511f574f7ddc69938c21612f8d">spherical</a> = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  }</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="comment">// here we set a low # iterations because this is typically used</span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">// for large clusterings</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  this-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a520803e209b44c904b876d6b8dad23c9">cp</a>.<a class="code" href="structfaiss_1_1ClusteringParameters.html#a5c7c6f05c75e1668befdb3be148fd5f9">niter</a> = 10;</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  this-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a520803e209b44c904b876d6b8dad23c9">cp</a>.verbose = this-><a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>;</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">if</span> (!<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>) {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// Construct an empty quantizer</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  GpuIndexFlatConfig config = ivfConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html#a6d357a9a67a2fed9c8e7b139712d30f6">flatConfig</a>;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="comment">// FIXME: inherit our same device</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  config.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexConfig.html#aab05a0aa7b42feae7df4e556a52ead57">device</a> = <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_L2) {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a> = <span class="keyword">new</span> GpuIndexFlatL2(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>, this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, config);</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_INNER_PRODUCT) {</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a> = <span class="keyword">new</span> GpuIndexFlatIP(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>, this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, config);</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// unknown metric type</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  FAISS_ASSERT_MSG(<span class="keyword">false</span>, <span class="stringliteral">"unknown metric type"</span>);</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> }</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> GpuIndexIVF::~GpuIndexIVF() {</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">delete</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> }</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> GpuIndexFlat*</div>
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<div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#afe6eb789377072b309d7a385aa0d1c5e"> 75</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#afe6eb789377072b309d7a385aa0d1c5e">GpuIndexIVF::getQuantizer</a>() {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> }</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a94c2c171f9a2d27085dea9101067bdf2"> 80</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a94c2c171f9a2d27085dea9101067bdf2">GpuIndexIVF::copyFrom</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a>* index) {</div>
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<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>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a> = index-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> = index-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a>;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  FAISS_ASSERT(index-><a class="code" href="structfaiss_1_1IndexIVF.html#ab38fde4c923abefc4185eb7450b5b95b">nlist</a> > 0);</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  FAISS_THROW_IF_NOT_FMT(index-><a class="code" href="structfaiss_1_1IndexIVF.html#ab38fde4c923abefc4185eb7450b5b95b">nlist</a> <=</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>) std::numeric_limits<int>::max(),</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="stringliteral">"GPU index only supports %zu inverted lists"</span>,</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  (<span class="keywordtype">size_t</span>) std::numeric_limits<int>::max());</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a> = index-><a class="code" href="structfaiss_1_1IndexIVF.html#ab38fde4c923abefc4185eb7450b5b95b">nlist</a>;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a187bdcbbac02bf8fd0e6bb40a1c0426b">nprobe_</a> = index-><a class="code" href="structfaiss_1_1IndexIVF.html#affed235eadf27a13d753ee4d33a1dc58">nprobe</a>;</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// The metric type may have changed as well, so we might have to</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// change our quantizer</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">delete</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a> = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// Construct an empty quantizer</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> config = ivfConfig_.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html#a6d357a9a67a2fed9c8e7b139712d30f6">flatConfig</a>;</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// FIXME: inherit our same device</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  config.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexConfig.html#aab05a0aa7b42feae7df4e556a52ead57">device</a> = <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
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<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#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_L2) {</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">// FIXME: 2 different float16 options?</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a> = <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html">GpuIndexFlatL2</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>, this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, config);</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (index-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_INNER_PRODUCT) {</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// FIXME: 2 different float16 options?</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a> = <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html">GpuIndexFlatIP</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>, this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, config);</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// unknown metric type</span></div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  FAISS_ASSERT(<span class="keyword">false</span>);</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  }</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">if</span> (!index-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>) {</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = 0;</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// Otherwise, we can populate ourselves from the other index</span></div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="comment">// ntotal can exceed max int, but the number of vectors per inverted</span></div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// list cannot exceed this. We check this in the subclasses.</span></div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = index-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// Since we're trained, the quantizer must have data</span></div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  FAISS_ASSERT(index-><a class="code" href="structfaiss_1_1IndexIVF.html#a4b40cc7a70dff41196a3b8769586667a">quantizer</a>-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> > 0);</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">if</span> (index-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_L2) {</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">auto</span> q = <span class="keyword">dynamic_cast<</span><a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a>*<span class="keyword">></span>(index-><a class="code" href="structfaiss_1_1IndexIVF.html#a4b40cc7a70dff41196a3b8769586667a">quantizer</a>);</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  FAISS_ASSERT(q);</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#abb964875e0893de1d8334ca5ad0f62dc">copyFrom</a>(q);</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (index-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_INNER_PRODUCT) {</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">auto</span> q = <span class="keyword">dynamic_cast<</span><a class="code" href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a>*<span class="keyword">></span>(index-><a class="code" href="structfaiss_1_1IndexIVF.html#a4b40cc7a70dff41196a3b8769586667a">quantizer</a>);</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  FAISS_ASSERT(q);</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#abb964875e0893de1d8334ca5ad0f62dc">copyFrom</a>(q);</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  } <span class="keywordflow">else</span> {</div>
|
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// unknown metric type</span></div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  FAISS_ASSERT(<span class="keyword">false</span>);</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  }</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> }</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00148"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a1db0a796b8b2917d989952c5f07fbe55"> 148</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a1db0a796b8b2917d989952c5f07fbe55">GpuIndexIVF::copyTo</a>(<a class="code" href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a>* index)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</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>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="comment">//</span></div>
|
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="comment">// Index information</span></div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  index-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = this-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  index-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a> = this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>;</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  index-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> = this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a>;</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  index-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>;</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment">// IndexIVF information</span></div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#ab38fde4c923abefc4185eb7450b5b95b">nlist</a> = <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a>;</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#affed235eadf27a13d753ee4d33a1dc58">nprobe</a> = <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a187bdcbbac02bf8fd0e6bb40a1c0426b">nprobe_</a>;</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">// Construct and copy the appropriate quantizer</span></div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <a class="code" href="structfaiss_1_1IndexFlat.html">faiss::IndexFlat</a>* q = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_L2) {</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  q = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a>(this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>);</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> == faiss::METRIC_INNER_PRODUCT) {</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  q = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a>(this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>);</div>
|
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// unknown metric type</span></div>
|
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  FAISS_ASSERT(<span class="keyword">false</span>);</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  }</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  FAISS_ASSERT(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>);</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a046007ff2fafcafc6ae328769c700e39">copyTo</a>(q);</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">if</span> (index-><a class="code" href="structfaiss_1_1IndexIVF.html#aed2e9757ad5f3c234fd8ad60175a2a73">own_fields</a>) {</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keyword">delete</span> index-><a class="code" href="structfaiss_1_1IndexIVF.html#a4b40cc7a70dff41196a3b8769586667a">quantizer</a>;</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  }</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#a4b40cc7a70dff41196a3b8769586667a">quantizer</a> = q;</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#a28c248ae6a2b0991c012ab7abe13574a">quantizer_trains_alone</a> = 0;</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#aed2e9757ad5f3c234fd8ad60175a2a73">own_fields</a> = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#a9746bcd42ecec1501f221e918b25e8e7">cp</a> = this-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a520803e209b44c904b876d6b8dad23c9">cp</a>;</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#af16d325f5bef22b2e5f90ceea796e80d">ids</a>.clear();</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#af16d325f5bef22b2e5f90ceea796e80d">ids</a>.resize(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a>);</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#aedd0c14b5654295b291638ec7f9f9517">maintain_direct_map</a> = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  index->direct_map.clear();</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> }</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="keywordtype">int</span></div>
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<div class="line"><a name="l00197"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a43a63e93d55b79eac38173f219743ddf"> 197</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a43a63e93d55b79eac38173f219743ddf">GpuIndexIVF::getNumLists</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a>;</div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> }</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00202"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a1efac4b9801d57fa6d0085d6aed9c1f2"> 202</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a1efac4b9801d57fa6d0085d6aed9c1f2">GpuIndexIVF::setNumProbes</a>(<span class="keywordtype">int</span> nprobe) {</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  FAISS_THROW_IF_NOT_FMT(nprobe > 0 && nprobe <= 1024,</div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="stringliteral">"nprobe must be from 1 to 1024; passed %d"</span>,</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  nprobe);</div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a187bdcbbac02bf8fd0e6bb40a1c0426b">nprobe_</a> = nprobe;</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> }</div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> </div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="keywordtype">int</span></div>
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<div class="line"><a name="l00210"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a13bce124f8acada641daf60d6edddb33"> 210</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a13bce124f8acada641daf60d6edddb33">GpuIndexIVF::getNumProbes</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">return</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a187bdcbbac02bf8fd0e6bb40a1c0426b">nprobe_</a>;</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> }</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#ace41857c97a357284acbe4556c9da3da"> 215</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#ace41857c97a357284acbe4556c9da3da">GpuIndexIVF::add</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>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="comment">// FIXME: GPU-ize</span></div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  std::vector<Index::idx_t> ids(n);</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">for</span> (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> i = 0; i < n; ++i) {</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  ids[i] = this-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> + i;</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  }</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a47f6969fe60d82b8e3407557ba9eec88">add_with_ids</a>(n, x, ids.data());</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> }</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> GpuIndexIVF::trainQuantizer_(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) {</div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">if</span> (n == 0) {</div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">// nothing to do</span></div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  }</div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">if</span> (<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> && (<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>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  printf (<span class="stringliteral">"IVF quantizer does not need training.\n"</span>);</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  }</div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  printf (<span class="stringliteral">"Training IVF quantizer on %ld vectors in %dD\n"</span>, n, <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>);</div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  }</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  DeviceScope scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a67750633faa35677ee505a1e61cfe142">device_</a>);</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="comment">// leverage the CPU-side k-means code, which works for the GPU</span></div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="comment">// flat index as well</span></div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a67161796f274a7171a67c36bdf1ef1db">reset</a>();</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  Clustering clus(this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a>, this-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a520803e209b44c904b876d6b8dad23c9">cp</a>);</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  clus.verbose = <a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>;</div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  clus.train(n, x, *<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>);</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <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> = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</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>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> }</div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> } } <span class="comment">// namespace</span></div>
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<div class="ttc" id="structfaiss_1_1IndexIVF_html"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00045">IndexIVF.h:45</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_a13bce124f8acada641daf60d6edddb33"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a13bce124f8acada641daf60d6edddb33">faiss::gpu::GpuIndexIVF::getNumProbes</a></div><div class="ttdeci">int getNumProbes() const </div><div class="ttdoc">Returns our current number of list probes per query. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8cu_source.html#l00210">GpuIndexIVF.cu:210</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexFlat.html">faiss::IndexFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00023">IndexFlat.h:23</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_a1efac4b9801d57fa6d0085d6aed9c1f2"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a1efac4b9801d57fa6d0085d6aed9c1f2">faiss::gpu::GpuIndexIVF::setNumProbes</a></div><div class="ttdeci">void setNumProbes(int nprobe)</div><div class="ttdoc">Sets the number of list probes per query. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8cu_source.html#l00202">GpuIndexIVF.cu:202</a></div></div>
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<div class="ttc" id="structfaiss_1_1ClusteringParameters_html_a5c7c6f05c75e1668befdb3be148fd5f9"><div class="ttname"><a href="structfaiss_1_1ClusteringParameters.html#a5c7c6f05c75e1668befdb3be148fd5f9">faiss::ClusteringParameters::niter</a></div><div class="ttdeci">int niter</div><div class="ttdoc">clustering iterations </div><div class="ttdef"><b>Definition:</b> <a href="Clustering_8h_source.html#l00025">Clustering.h:25</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_a43a63e93d55b79eac38173f219743ddf"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a43a63e93d55b79eac38173f219743ddf">faiss::gpu::GpuIndexIVF::getNumLists</a></div><div class="ttdeci">int getNumLists() const </div><div class="ttdoc">Returns the number of inverted lists we&#39;re managing. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8cu_source.html#l00197">GpuIndexIVF.cu:197</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a046007ff2fafcafc6ae328769c700e39"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a046007ff2fafcafc6ae328769c700e39">faiss::gpu::GpuIndexFlat::copyTo</a></div><div class="ttdeci">void copyTo(faiss::IndexFlat *index) const </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00120">GpuIndexFlat.cu:120</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIVF_html_a28c248ae6a2b0991c012ab7abe13574a"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a28c248ae6a2b0991c012ab7abe13574a">faiss::IndexIVF::quantizer_trains_alone</a></div><div class="ttdeci">char quantizer_trains_alone</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00056">IndexIVF.h:56</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIVF_html_affed235eadf27a13d753ee4d33a1dc58"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#affed235eadf27a13d753ee4d33a1dc58">faiss::IndexIVF::nprobe</a></div><div class="ttdeci">size_t nprobe</div><div class="ttdoc">number of probes at query time </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00047">IndexIVF.h:47</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexFlatL2_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00079">IndexFlat.h:79</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexFlatIP_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00073">IndexFlat.h:73</a></div></div>
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<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="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#l00062">IndexIVF.h:62</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndex_html_a47f6969fe60d82b8e3407557ba9eec88"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndex.html#a47f6969fe60d82b8e3407557ba9eec88">faiss::gpu::GpuIndex::add_with_ids</a></div><div class="ttdeci">void add_with_ids(Index::idx_t n, const float *x, const Index::idx_t *ids) override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndex_8cu_source.html#l00066">GpuIndex.cu:66</a></div></div>
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<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>
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<div class="ttc" id="structfaiss_1_1IndexIVF_html_a4b40cc7a70dff41196a3b8769586667a"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a4b40cc7a70dff41196a3b8769586667a">faiss::IndexIVF::quantizer</a></div><div class="ttdeci">Index * quantizer</div><div class="ttdoc">quantizer that maps vectors to inverted lists </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00049">IndexIVF.h:49</a></div></div>
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<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexFlatConfig_html"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">faiss::gpu::GpuIndexFlatConfig</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00027">GpuIndexFlat.h:27</a></div></div>
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<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFConfig_html_a6d357a9a67a2fed9c8e7b139712d30f6"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html#a6d357a9a67a2fed9c8e7b139712d30f6">faiss::gpu::GpuIndexIVFConfig::flatConfig</a></div><div class="ttdeci">GpuIndexFlatConfig flatConfig</div><div class="ttdoc">Configuration for the coarse quantizer object. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00034">GpuIndexIVF.h:34</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_afe6eb789377072b309d7a385aa0d1c5e"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#afe6eb789377072b309d7a385aa0d1c5e">faiss::gpu::GpuIndexIVF::getQuantizer</a></div><div class="ttdeci">GpuIndexFlat * getQuantizer()</div><div class="ttdoc">Return the quantizer we&#39;re using. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8cu_source.html#l00075">GpuIndexIVF.cu:75</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIVF_html_a9746bcd42ecec1501f221e918b25e8e7"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a9746bcd42ecec1501f221e918b25e8e7">faiss::IndexIVF::cp</a></div><div class="ttdeci">ClusteringParameters cp</div><div class="ttdoc">to override default clustering params </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00059">IndexIVF.h:59</a></div></div>
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<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>
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<div class="ttc" id="structfaiss_1_1IndexIVF_html_aed2e9757ad5f3c234fd8ad60175a2a73"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#aed2e9757ad5f3c234fd8ad60175a2a73">faiss::IndexIVF::own_fields</a></div><div class="ttdeci">bool own_fields</div><div class="ttdoc">whether object owns the quantizer </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00057">IndexIVF.h:57</a></div></div>
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<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>
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<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>
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<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>
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<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>
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<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>
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<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>
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<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>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatIP_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html">faiss::gpu::GpuIndexFlatIP</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00194">GpuIndexFlat.h:194</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_abb964875e0893de1d8334ca5ad0f62dc"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#abb964875e0893de1d8334ca5ad0f62dc">faiss::gpu::GpuIndexFlat::copyFrom</a></div><div class="ttdeci">void copyFrom(const faiss::IndexFlat *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00087">GpuIndexFlat.cu:87</a></div></div>
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<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#l00065">DeviceUtils.h:65</a></div></div>
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<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>
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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>
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<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>
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<div class="ttc" id="structfaiss_1_1IndexIVF_html_ab38fde4c923abefc4185eb7450b5b95b"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#ab38fde4c923abefc4185eb7450b5b95b">faiss::IndexIVF::nlist</a></div><div class="ttdeci">size_t nlist</div><div class="ttdoc">number of possible key values </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00046">IndexIVF.h:46</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a67161796f274a7171a67c36bdf1ef1db"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a67161796f274a7171a67c36bdf1ef1db">faiss::gpu::GpuIndexFlat::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">Clears all vectors from this index. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00148">GpuIndexFlat.cu:148</a></div></div>
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<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>
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<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>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_ace41857c97a357284acbe4556c9da3da"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#ace41857c97a357284acbe4556c9da3da">faiss::gpu::GpuIndexIVF::add</a></div><div class="ttdeci">void add(Index::idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8cu_source.html#l00215">GpuIndexIVF.cu:215</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIVF_html_aedd0c14b5654295b291638ec7f9f9517"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#aedd0c14b5654295b291638ec7f9f9517">faiss::IndexIVF::maintain_direct_map</a></div><div class="ttdeci">bool maintain_direct_map</div><div class="ttdoc">map for direct access to the elements. Enables reconstruct(). </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00068">IndexIVF.h:68</a></div></div>
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<div class="ttc" id="structfaiss_1_1ClusteringParameters_html_ad997fb511f574f7ddc69938c21612f8d"><div class="ttname"><a href="structfaiss_1_1ClusteringParameters.html#ad997fb511f574f7ddc69938c21612f8d">faiss::ClusteringParameters::spherical</a></div><div class="ttdeci">bool spherical</div><div class="ttdoc">do we want normalized centroids? </div><div class="ttdef"><b>Definition:</b> <a href="Clustering_8h_source.html#l00029">Clustering.h:29</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html_a520803e209b44c904b876d6b8dad23c9"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a520803e209b44c904b876d6b8dad23c9">faiss::gpu::GpuIndexIVF::cp</a></div><div class="ttdeci">ClusteringParameters cp</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00082">GpuIndexIVF.h:82</a></div></div>
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<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 version 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>
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