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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">GpuIndexIVFFlat.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">/**</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * All rights reserved.</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This source code is licensed under the CC-by-NC license found in the</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</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="l00008"></a><span class="lineno"> 8</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// Copyright 2004-present Facebook. All Rights Reserved.</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "GpuIndexIVFFlat.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 "GpuResources.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "impl/IVFFlat.cuh"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "utils/CopyUtils.cuh"</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "utils/DeviceUtils.h"</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "utils/Float16.cuh"</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <limits></span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
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<div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a45d2407896ded570f07e4a606b45b989"> 26</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a45d2407896ded570f07e4a606b45b989">GpuIndexIVFFlat::GpuIndexIVFFlat</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordtype">int</span> device,</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordtype">bool</span> useFloat16CoarseQuantizer,</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordtype">bool</span> useFloat16IVFStorage,</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordtype">int</span> nlist,</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  IndicesOptions indicesOptions,</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric) :</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html">GpuIndexIVF</a>(resources,</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  device,</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  indicesOptions,</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  useFloat16CoarseQuantizer,</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  dims,</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  metric,</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  nlist),</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  useFloat16IVFStorage_(useFloat16IVFStorage),</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  reserveMemoryVecs_(0),</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  index_(nullptr) {</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>);</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// faiss::Index params</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</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="l00048"></a><span class="lineno"> 48</span> </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#ifndef FAISS_USE_FLOAT16</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"></span> FAISS_ASSERT(!useFloat16IVFStorage_,</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="stringliteral">"float16 unsupported; need CUDA SDK >= 7.5"</span>);</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// We haven't trained ourselves, so don't construct the IVFFlat</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">// index yet</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> }</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a3f5ea5d411a9b03a8b072af6df29dd25"> 58</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a45d2407896ded570f07e4a606b45b989">GpuIndexIVFFlat::GpuIndexIVFFlat</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordtype">int</span> device,</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_1GpuIndexFlat.html">GpuIndexFlat</a>* quantizer,</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordtype">bool</span> useFloat16IVFStorage,</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">int</span> nlist,</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  IndicesOptions indicesOptions,</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric) :</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html">GpuIndexIVF</a>(resources, device, indicesOptions, dims,</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  metric, nlist, quantizer),</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  useFloat16IVFStorage_(useFloat16IVFStorage),</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  reserveMemoryVecs_(0),</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  index_(nullptr) {</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</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>  <span class="comment">// faiss::Index params</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = (quantizer-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> > 0);</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor">#ifndef FAISS_USE_FLOAT16</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor"></span> FAISS_ASSERT(!useFloat16IVFStorage_,</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="stringliteral">"float16 unsupported; need CUDA SDK >= 7.5"</span>);</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>) {</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  index_ = <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1IVFFlat.html">IVFFlat</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7">getGpuData</a>(),</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><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="l00085"></a><span class="lineno"> 85</span>  useFloat16IVFStorage_,</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a58e0f685aab12409eca26de01d43e39e">indicesOptions_</a>);</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> }</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> GpuIndexIVFFlat::~GpuIndexIVFFlat() {</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">delete</span> index_;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> }</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="keywordtype">void</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a329d7734f1285788d10c1fbf1f88d72f"> 95</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a329d7734f1285788d10c1fbf1f88d72f">GpuIndexIVFFlat::reserveMemory</a>(<span class="keywordtype">size_t</span> numVecs) {</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  reserveMemoryVecs_ = numVecs;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">if</span> (index_) {</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a02e1e2d080ee31bf7835f89b9f2a13a9">reserveMemory</a>(numVecs);</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> }</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a96fd66c31c7e46b1549ed61d1b3476f3"> 103</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a96fd66c31c7e46b1549ed61d1b3476f3">GpuIndexIVFFlat::copyFrom</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a>* index) {</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>);</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</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#a94c2c171f9a2d27085dea9101067bdf2">GpuIndexIVF::copyFrom</a>(index);</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// Clear out our old data</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">delete</span> index_;</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  index_ = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// The other index might not be trained</span></div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</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="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="comment">// Otherwise, we can populate ourselves from the other index</span></div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</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="l00119"></a><span class="lineno"> 119</span> </div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">// Copy our lists as well</span></div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  index_ = <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1IVFFlat.html">IVFFlat</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7">getGpuData</a>(),</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</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="l00124"></a><span class="lineno"> 124</span>  useFloat16IVFStorage_,</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a58e0f685aab12409eca26de01d43e39e">indicesOptions_</a>);</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  FAISS_ASSERT(index-><a class="code" href="structfaiss_1_1IndexIVFFlat.html#a52f87a2c6a9282b5b74a8615fef1b4b7">vecs</a>.size() == index-><a class="code" href="structfaiss_1_1IndexIVF.html#af16d325f5bef22b2e5f90ceea796e80d">ids</a>.size());</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < index-><a class="code" href="structfaiss_1_1IndexIVFFlat.html#a52f87a2c6a9282b5b74a8615fef1b4b7">vecs</a>.size(); ++i) {</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">auto</span>& vecs = index-><a class="code" href="structfaiss_1_1IndexIVFFlat.html#a52f87a2c6a9282b5b74a8615fef1b4b7">vecs</a>[i];</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">auto</span>& ids = index-><a class="code" href="structfaiss_1_1IndexIVF.html#af16d325f5bef22b2e5f90ceea796e80d">ids</a>[i];</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  FAISS_ASSERT(vecs.size() % this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a> == 0);</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">auto</span> numVecs = vecs.size() / this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>;</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  FAISS_ASSERT(numVecs == ids.size());</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFFlat.html#a0bedde6dcb7c2f10f277461b97486f52">addCodeVectorsFromCpu</a>(i, vecs.data(), ids.data(), numVecs);</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> }</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> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a345980d7ae4b5baadf93f647fc6cb0b1"> 141</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a345980d7ae4b5baadf93f647fc6cb0b1">GpuIndexIVFFlat::copyTo</a>(<a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a>* index)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>);</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="comment">// We must have the indices in order to copy to ourselves</span></div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  FAISS_ASSERT(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a58e0f685aab12409eca26de01d43e39e">indicesOptions_</a> != INDICES_IVF);</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>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a1db0a796b8b2917d989952c5f07fbe55">GpuIndexIVF::copyTo</a>(index);</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// Clear out the old inverted lists</span></div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  index-><a class="code" href="structfaiss_1_1IndexIVFFlat.html#a52f87a2c6a9282b5b74a8615fef1b4b7">vecs</a>.clear();</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  index-><a class="code" href="structfaiss_1_1IndexIVFFlat.html#a52f87a2c6a9282b5b74a8615fef1b4b7">vecs</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="l00152"></a><span class="lineno"> 152</span> </div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="comment">// Copy the inverted lists</span></div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span> (index_) {</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aba606c141e714fab843493cc58167494">nlist_</a>; ++i) {</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  index-><a class="code" href="structfaiss_1_1IndexIVFFlat.html#a52f87a2c6a9282b5b74a8615fef1b4b7">vecs</a>[i] = index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFFlat.html#a78473b609750b8ec7dfe3d137f50c650">getListVectors</a>(i);</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  index-><a class="code" href="structfaiss_1_1IndexIVF.html#af16d325f5bef22b2e5f90ceea796e80d">ids</a>[i] = index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a4a4ed220b9433aa788ed32db8f20a9db">getListIndices</a>(i);</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>  }</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> }</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="keywordtype">size_t</span></div>
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<div class="line"><a name="l00163"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#adaa727f3e951068501ebf381b001f3bd"> 163</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#adaa727f3e951068501ebf381b001f3bd">GpuIndexIVFFlat::reclaimMemory</a>() {</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">if</span> (index_) {</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>);</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">return</span> index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#ac9b69e1b2582cb2c064b5fff60d31cc8">reclaimMemory</a>();</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  }</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> }</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00174"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a88676a893e9b44041e7a52327d960b54"> 174</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a88676a893e9b44041e7a52327d960b54">GpuIndexIVFFlat::reset</a>() {</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (index_) {</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>);</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>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a7ea671876443c93436499ad581f16997">reset</a>();</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = 0;</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  FAISS_ASSERT(this-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> == 0);</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> }</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> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00186"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a3c5b3760acb01814892fe93c72f08304"> 186</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a3c5b3760acb01814892fe93c72f08304">GpuIndexIVFFlat::train</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) {</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>);</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">if</span> (this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>) {</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  FAISS_ASSERT(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
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|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</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="l00192"></a><span class="lineno"> 192</span>  FAISS_ASSERT(index_);</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">return</span>;</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>  FAISS_ASSERT(!index_);</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  trainQuantizer_(n, x);</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>  <span class="comment">// The quantizer is now trained; construct the IVF index</span></div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  index_ = <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1IVFFlat.html">IVFFlat</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#aaa7dd748e3cbd7ef68f2e384ac503eab">quantizer_</a>-><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7">getGpuData</a>(),</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</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="l00204"></a><span class="lineno"> 204</span>  useFloat16IVFStorage_,</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a58e0f685aab12409eca26de01d43e39e">indicesOptions_</a>);</div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">if</span> (reserveMemoryVecs_) {</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a02e1e2d080ee31bf7835f89b9f2a13a9">reserveMemory</a>(reserveMemoryVecs_);</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> </div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</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="l00211"></a><span class="lineno"> 211</span> }</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> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a99c11ab640b70725d5975763e7393894"> 214</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a99c11ab640b70725d5975763e7393894">GpuIndexIVFFlat::add_with_ids</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n,</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <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="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a>* xids) {</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  FAISS_ASSERT(this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  FAISS_ASSERT(index_);</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>);</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keyword">auto</span> stream = <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>->getDefaultStreamCurrentDevice();</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keyword">auto</span> deviceVecs =</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  toDevice<float, 2>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>,</div>
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keyword">const_cast<</span><span class="keywordtype">float</span>*<span class="keyword">></span>(x),</div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  stream,</div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  {(int) n, index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFBase.html#a4d44e8aebc380b7c846a8d8e6e835540">getDim</a>()});</div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  static_assert(<span class="keyword">sizeof</span>(<span class="keywordtype">long</span>) == <span class="keyword">sizeof</span>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a>), <span class="stringliteral">"size mismatch"</span>);</div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keyword">auto</span> deviceIds =</div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  toDevice<long, 1>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>,</div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keyword">const_cast<</span><span class="keywordtype">long</span>*<span class="keyword">></span>(xids),</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  stream,</div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  {(int) n});</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">// Not all vectors may be able to be added (some may contain NaNs</span></div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="comment">// etc)</span></div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> += index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFFlat.html#af20f96b6ad754664796c8a4e7f83ed3a">classifyAndAddVectors</a>(deviceVecs, deviceIds);</div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> }</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> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00244"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#ad101d8f209f3a269ef75d8d5797ec56f"> 244</a></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#ad101d8f209f3a269ef75d8d5797ec56f">GpuIndexIVFFlat::search</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> n,</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> k,</div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordtype">float</span>* distances,</div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>* labels)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">if</span> (n == 0) {</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  }</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  FAISS_ASSERT(this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  FAISS_ASSERT(index_);</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>  <a class="code" href="classfaiss_1_1gpu_1_1DeviceScope.html">DeviceScope</a> scope(device_);</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keyword">auto</span> stream = resources_->getDefaultStream(device_);</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="comment">// Make sure arguments are on the device we desire; use temporary</span></div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="comment">// memory allocations to move it if necessary</span></div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keyword">auto</span> devX =</div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  toDevice<float, 2>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>,</div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keyword">const_cast<</span><span class="keywordtype">float</span>*<span class="keyword">></span>(x),</div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  stream,</div>
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  {(int) n, this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>});</div>
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<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keyword">auto</span> devDistances =</div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  toDevice<float, 2>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
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<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>,</div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  distances,</div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  stream,</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  {(int) n, (<span class="keywordtype">int</span>) k});</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keyword">auto</span> devLabels =</div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  toDevice<faiss::Index::idx_t, 2>(<a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a17b82a8a11783da6eb1b07c9aab98c36">resources_</a>,</div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">device_</a>,</div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  labels,</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  stream,</div>
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<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  {(int) n, (<span class="keywordtype">int</span>) k});</div>
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<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  index_-><a class="code" href="classfaiss_1_1gpu_1_1IVFFlat.html#a6652ca90a8a30512104fc909f0a0a6b8">query</a>(devX, <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a187bdcbbac02bf8fd0e6bb40a1c0426b">nprobe_</a>, k, devDistances, devLabels);</div>
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> </div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="comment">// Copy back if necessary</span></div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  fromDevice<float, 2>(devDistances, distances, stream);</div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  fromDevice<faiss::Index::idx_t, 2>(devLabels, labels, stream);</div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> }</div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> GpuIndexIVFFlat::set_typename() {</div>
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<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  this->index_typename = <span class="stringliteral">"GpuIndexIVFFlat"</span>;</div>
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<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> }</div>
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<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> </div>
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<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> } } <span class="comment">// namespace</span></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFFlat_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFFlat.html">faiss::gpu::IVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IVFFlat_8cuh_source.html#l00018">IVFFlat.cuh:18</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a4d44e8aebc380b7c846a8d8e6e835540"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a4d44e8aebc380b7c846a8d8e6e835540">faiss::gpu::IVFBase::getDim</a></div><div class="ttdeci">int getDim() const </div><div class="ttdoc">Return the number of dimensions we are indexing. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00099">IVFBase.cu:99</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a310b00d4443920a855b11276d488c9a7"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7">faiss::gpu::GpuIndexFlat::getGpuData</a></div><div class="ttdeci">FlatIndex * getGpuData()</div><div class="ttdoc">For internal access. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00100">GpuIndexFlat.h:100</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a96fd66c31c7e46b1549ed61d1b3476f3"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a96fd66c31c7e46b1549ed61d1b3476f3">faiss::gpu::GpuIndexIVFFlat::copyFrom</a></div><div class="ttdeci">void copyFrom(const faiss::IndexIVFFlat *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00103">GpuIndexIVFFlat.cu:103</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a02e1e2d080ee31bf7835f89b9f2a13a9"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a02e1e2d080ee31bf7835f89b9f2a13a9">faiss::gpu::IVFBase::reserveMemory</a></div><div class="ttdeci">void reserveMemory(size_t numVecs)</div><div class="ttdoc">Reserve GPU memory in our inverted lists for this number of vectors. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00044">IVFBase.cu:44</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_adaa727f3e951068501ebf381b001f3bd"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#adaa727f3e951068501ebf381b001f3bd">faiss::gpu::GpuIndexIVFFlat::reclaimMemory</a></div><div class="ttdeci">size_t reclaimMemory()</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00163">GpuIndexIVFFlat.cu:163</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuResources_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuResources.html">faiss::gpu::GpuResources</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuResources_8h_source.html#l00024">GpuResources.h:24</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00113">IndexIVF.h:113</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a3c5b3760acb01814892fe93c72f08304"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a3c5b3760acb01814892fe93c72f08304">faiss::gpu::GpuIndexIVFFlat::train</a></div><div class="ttdeci">void train(Index::idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00186">GpuIndexIVFFlat.cu:186</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndex_html_a27b56209183310c8d57ffda796f02c6c"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndex.html#a27b56209183310c8d57ffda796f02c6c">faiss::gpu::GpuIndex::device_</a></div><div class="ttdeci">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#l00043">GpuIndex.h:43</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#l00056">IndexIVF.h:56</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVF_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html">faiss::gpu::GpuIndexIVF</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00025">GpuIndexIVF.h:25</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#l00066">Index.h:66</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFFlat_html_af20f96b6ad754664796c8a4e7f83ed3a"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFFlat.html#af20f96b6ad754664796c8a4e7f83ed3a">faiss::gpu::IVFFlat::classifyAndAddVectors</a></div><div class="ttdeci">int classifyAndAddVectors(Tensor< float, 2, true > &vecs, Tensor< long, 1, true > &indices)</div><div class="ttdef"><b>Definition:</b> <a href="IVFFlat_8cu_source.html#l00129">IVFFlat.cu:129</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a345980d7ae4b5baadf93f647fc6cb0b1"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a345980d7ae4b5baadf93f647fc6cb0b1">faiss::gpu::GpuIndexIVFFlat::copyTo</a></div><div class="ttdeci">void copyTo(faiss::IndexIVFFlat *index) const </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00141">GpuIndexIVFFlat.cu:141</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="classfaiss_1_1gpu_1_1GpuIndexIVF_html_a58e0f685aab12409eca26de01d43e39e"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVF.html#a58e0f685aab12409eca26de01d43e39e">faiss::gpu::GpuIndexIVF::indicesOptions_</a></div><div class="ttdeci">const IndicesOptions indicesOptions_</div><div class="ttdoc">How should indices be stored on the GPU? </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVF_8h_source.html#l00081">GpuIndexIVF.h:81</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a329d7734f1285788d10c1fbf1f88d72f"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a329d7734f1285788d10c1fbf1f88d72f">faiss::gpu::GpuIndexIVFFlat::reserveMemory</a></div><div class="ttdeci">void reserveMemory(size_t numVecs)</div><div class="ttdoc">Reserve GPU memory in our inverted lists for this number of vectors. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00095">GpuIndexIVFFlat.cu:95</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#l00040">GpuIndex.h:40</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#l00181">GpuIndexIVF.cu:181</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#l00064">Index.h:64</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#l00067">Index.h:67</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a7ea671876443c93436499ad581f16997"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a7ea671876443c93436499ad581f16997">faiss::gpu::IVFBase::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00074">IVFBase.cu:74</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a99c11ab640b70725d5975763e7393894"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a99c11ab640b70725d5975763e7393894">faiss::gpu::GpuIndexIVFFlat::add_with_ids</a></div><div class="ttdeci">void add_with_ids(Index::idx_t n, const float *x, const Index::idx_t *xids) override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00214">GpuIndexIVFFlat.cu:214</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFFlat_html_a0bedde6dcb7c2f10f277461b97486f52"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFFlat.html#a0bedde6dcb7c2f10f277461b97486f52">faiss::gpu::IVFFlat::addCodeVectorsFromCpu</a></div><div class="ttdeci">void addCodeVectorsFromCpu(int listId, const float *vecs, const long *indices, size_t numVecs)</div><div class="ttdef"><b>Definition:</b> <a href="IVFFlat_8cu_source.html#l00057">IVFFlat.cu:57</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#l00055">DeviceUtils.h:55</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#l00097">GpuIndexIVF.h:97</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFFlat_html_a6652ca90a8a30512104fc909f0a0a6b8"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFFlat.html#a6652ca90a8a30512104fc909f0a0a6b8">faiss::gpu::IVFFlat::query</a></div><div class="ttdeci">void query(Tensor< float, 2, true > &queries, int nprobe, int k, Tensor< float, 2, true > &outDistances, Tensor< long, 2, true > &outIndices)</div><div class="ttdef"><b>Definition:</b> <a href="IVFFlat_8cu_source.html#l00287">IVFFlat.cu:287</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFFlat_html_a78473b609750b8ec7dfe3d137f50c650"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFFlat.html#a78473b609750b8ec7dfe3d137f50c650">faiss::gpu::IVFFlat::getListVectors</a></div><div class="ttdeci">std::vector< float > getListVectors(int listId) const </div><div class="ttdoc">Return the vectors of a particular list back to the CPU. </div><div class="ttdef"><b>Definition:</b> <a href="IVFFlat_8cu_source.html#l00353">IVFFlat.cu:353</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#l00074">Index.h:74</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a45d2407896ded570f07e4a606b45b989"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a45d2407896ded570f07e4a606b45b989">faiss::gpu::GpuIndexIVFFlat::GpuIndexIVFFlat</a></div><div class="ttdeci">GpuIndexIVFFlat(GpuResources *resources, int device, bool useFloat16CoarseQuantizer, bool useFloat16IVFStorage, int dims, int nlist, IndicesOptions indicesOptions, faiss::MetricType metric)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00026">GpuIndexIVFFlat.cu:26</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_a4a4ed220b9433aa788ed32db8f20a9db"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#a4a4ed220b9433aa788ed32db8f20a9db">faiss::gpu::IVFBase::getListIndices</a></div><div class="ttdeci">std::vector< long > getListIndices(int listId) const </div><div class="ttdoc">Return the list indices of a particular list back to the CPU. </div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00206">IVFBase.cu:206</a></div></div>
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<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#l00031">GpuIndexFlat.h:31</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#l00117">GpuIndexIVF.cu:117</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#l00071">Index.h:71</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IVFBase_html_ac9b69e1b2582cb2c064b5fff60d31cc8"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IVFBase.html#ac9b69e1b2582cb2c064b5fff60d31cc8">faiss::gpu::IVFBase::reclaimMemory</a></div><div class="ttdeci">size_t reclaimMemory()</div><div class="ttdef"><b>Definition:</b> <a href="IVFBase_8cu_source.html#l00104">IVFBase.cu:104</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a88676a893e9b44041e7a52327d960b54"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a88676a893e9b44041e7a52327d960b54">faiss::gpu::GpuIndexIVFFlat::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">removes all elements from the database. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00174">GpuIndexIVFFlat.cu:174</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_ad101d8f209f3a269ef75d8d5797ec56f"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#ad101d8f209f3a269ef75d8d5797ec56f">faiss::gpu::GpuIndexIVFFlat::search</a></div><div class="ttdeci">void search(faiss::Index::idx_t n, const float *x, faiss::Index::idx_t k, float *distances, faiss::Index::idx_t *labels) const override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00244">GpuIndexIVFFlat.cu:244</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 vetsion and a L2 search version. </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00044">Index.h:44</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a52f87a2c6a9282b5b74a8615fef1b4b7"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a52f87a2c6a9282b5b74a8615fef1b4b7">faiss::IndexIVFFlat::vecs</a></div><div class="ttdeci">std::vector< std::vector< float > > vecs</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00116">IndexIVF.h:116</a></div></div>
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