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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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214 lines
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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.h</div> </div>
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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">#pragma once</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "GpuIndexIVF.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>faiss { <span class="keyword">struct </span>IndexIVFFlat; }</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</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">class </span>IVFFlat;</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">class </span>GpuIndexFlat;</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"><a class="line" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html"> 22</a></span> <span class="keyword">struct </span><a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a> : <span class="keyword">public</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html">GpuIndexIVFConfig</a> {</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keyword">inline</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a>()</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  : <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html#ab98ac354bcd5632976f7edc2deda6e57">useFloat16IVFStorage</a>(<span class="keyword">false</span>) {</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"> 26</span> <span class="comment"></span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> /// Whether or not IVFFlat inverted list storage is in float16;</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> /// supported on all architectures</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html#ab98ac354bcd5632976f7edc2deda6e57"> 29</a></span> <span class="comment"></span> <span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html#ab98ac354bcd5632976f7edc2deda6e57">useFloat16IVFStorage</a>;</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> };</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"></span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">/// Wrapper around the GPU implementation that looks like</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">/// faiss::IndexIVFFlat</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html"> 34</a></span> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html">GpuIndexIVFFlat</a> : <span class="keyword">public</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVF.html">GpuIndexIVF</a> {</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">public</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> /// Construct from a pre-existing faiss::IndexIVFFlat instance, copying</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> /// data over to the given GPU, if the input index is trained.</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a33fe6f13e34cd0708ae981f0c0b381ef">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="l00039"></a><span class="lineno"> 39</span>  <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="l00040"></a><span class="lineno"> 40</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a>());</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"></span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> /// Constructs a new instance with an empty flat quantizer; the user</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> /// provides the number of lists desired.</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a33fe6f13e34cd0708ae981f0c0b381ef">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="l00045"></a><span class="lineno"> 45</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordtype">int</span> nlist,</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric,</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a>());</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  ~<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html">GpuIndexIVFFlat</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"></span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> /// Reserve GPU memory in our inverted lists for this number of vectors</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a329d7734f1285788d10c1fbf1f88d72f">reserveMemory</a>(<span class="keywordtype">size_t</span> numVecs);</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"></span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> /// Initialize ourselves from the given CPU index; will overwrite</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> /// all data in ourselves</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a96fd66c31c7e46b1549ed61d1b3476f3">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="l00058"></a><span class="lineno"> 58</span> <span class="comment"></span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> /// Copy ourselves to the given CPU index; will overwrite all data</span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> /// in the index instance</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a345980d7ae4b5baadf93f647fc6cb0b1">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="l00062"></a><span class="lineno"> 62</span> <span class="comment"></span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> /// After adding vectors, one can call this to reclaim device memory</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> /// to exactly the amount needed. Returns space reclaimed in bytes</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"></span> <span class="keywordtype">size_t</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#adaa727f3e951068501ebf381b001f3bd">reclaimMemory</a>();</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>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a88676a893e9b44041e7a52327d960b54">reset</a>() <span class="keyword">override</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>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a3c5b3760acb01814892fe93c72f08304">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) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">protected</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> /// Called from GpuIndex for add/add_with_ids</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a64bd89e18b8199ae7a88066890b10a0e">addImpl_</a>(</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <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="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>* ids) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"></span></div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> /// Called from GpuIndex for search</span></div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a3285302b227052fee57b3df10c2a482b">searchImpl_</a>(</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <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="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</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="l00083"></a><span class="lineno"> 83</span>  <span class="keywordtype">float</span>* distances,</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>* labels) <span class="keyword">const override</span>;</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>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">GpuIndexIVFFlatConfig</a> ivfFlatConfig_;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"></span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> /// Desired inverted list memory reservation</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"></span> <span class="keywordtype">size_t</span> reserveMemoryVecs_;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"></span></div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> /// Instance that we own; contains the inverted list</span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1IVFFlat.html">IVFFlat</a>* index_;</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> };</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</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#l00017">IVFFlat.cuh:17</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a33fe6f13e34cd0708ae981f0c0b381ef"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a33fe6f13e34cd0708ae981f0c0b381ef">faiss::gpu::GpuIndexIVFFlat::GpuIndexIVFFlat</a></div><div class="ttdeci">GpuIndexIVFFlat(GpuResources *resources, const faiss::IndexIVFFlat *index, GpuIndexIVFFlatConfig config=GpuIndexIVFFlatConfig())</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00025">GpuIndexIVFFlat.cu:25</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a3285302b227052fee57b3df10c2a482b"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a3285302b227052fee57b3df10c2a482b">faiss::gpu::GpuIndexIVFFlat::searchImpl_</a></div><div class="ttdeci">void searchImpl_(faiss::Index::idx_t n, const float *x, faiss::Index::idx_t k, float *distances, faiss::Index::idx_t *labels) const override</div><div class="ttdoc">Called from GpuIndex for search. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00237">GpuIndexIVFFlat.cu:237</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#l00079">GpuIndexIVFFlat.cu:79</a></div></div>
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<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFConfig_html"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFConfig.html">faiss::gpu::GpuIndexIVFConfig</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="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#l00154">GpuIndexIVFFlat.cu:154</a></div></div>
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<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig_html_ab98ac354bcd5632976f7edc2deda6e57"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html#ab98ac354bcd5632976f7edc2deda6e57">faiss::gpu::GpuIndexIVFFlatConfig::useFloat16IVFStorage</a></div><div class="ttdeci">bool useFloat16IVFStorage</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8h_source.html#l00029">GpuIndexIVFFlat.h:29</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#l00023">GpuResources.h:23</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#l00181">IndexIVF.h:181</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html_a64bd89e18b8199ae7a88066890b10a0e"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a64bd89e18b8199ae7a88066890b10a0e">faiss::gpu::GpuIndexIVFFlat::addImpl_</a></div><div class="ttdeci">void addImpl_(faiss::Index::idx_t n, const float *x, const faiss::Index::idx_t *ids) override</div><div class="ttdoc">Called from GpuIndex for add/add_with_ids. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8cu_source.html#l00207">GpuIndexIVFFlat.cu:207</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#l00177">GpuIndexIVFFlat.cu:177</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#l00037">GpuIndexIVF.h:37</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#l00127">GpuIndexIVFFlat.cu:127</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#l00071">GpuIndexIVFFlat.cu:71</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="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig_html"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexIVFFlatConfig.html">faiss::gpu::GpuIndexIVFFlatConfig</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8h_source.html#l00022">GpuIndexIVFFlat.h:22</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexIVFFlat_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html">faiss::gpu::GpuIndexIVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexIVFFlat_8h_source.html#l00034">GpuIndexIVFFlat.h:34</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#l00165">GpuIndexIVFFlat.cu:165</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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