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<div class="title">GpuIndexIVFFlat.h</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">#pragma once</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "GpuIndexIVF.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span>faiss { <span class="keyword">struct </span>IndexIVFFlat; }</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">class </span>IVFFlat;</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">class </span>GpuIndexFlat;</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"></span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">/// Wrapper around the GPU implementation that looks like</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">/// faiss::IndexIVFFlat</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html"> 25</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="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">public</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"> /// Constructs a new instance with an empty flat quantizer; the user</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> /// provides the number of lists desired.</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a45d2407896ded570f07e4a606b45b989">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="l00030"></a><span class="lineno"> 30</span>  <span class="keywordtype">int</span> device,</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="comment">// Does the coarse quantizer use float16?</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordtype">bool</span> useFloat16CoarseQuantizer,</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="comment">// Is our IVF storage of vectors in float16?</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordtype">bool</span> useFloat16IVFStorage,</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">int</span> nlist,</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  IndicesOptions indicesOptions,</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric);</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"></span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> /// Call to initialize ourselves from a GpuIndexFlat instance. The</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> /// quantizer must match the dimension parameters specified; if</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> /// populated, it must also match the number of list elements</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> /// available.</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> /// The index must also be present on the same device as ourselves.</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> /// We do not own this quantizer instance.</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a45d2407896ded570f07e4a606b45b989">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="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">int</span> device,</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html">GpuIndexFlat</a>* quantizer,</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">bool</span> useFloat16,</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">int</span> nlist,</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  IndicesOptions indicesOptions,</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric);</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</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="l00056"></a><span class="lineno"> 56</span> <span class="comment"></span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</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="l00058"></a><span class="lineno"> 58</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="l00059"></a><span class="lineno"> 59</span> <span class="comment"></span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> /// Initialize ourselves from the given CPU index; will overwrite</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> /// all data in ourselves</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</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="l00063"></a><span class="lineno"> 63</span> <span class="comment"></span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</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="l00065"></a><span class="lineno"> 65</span> <span class="comment"> /// in the index instance</span></div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</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="l00067"></a><span class="lineno"> 67</span> <span class="comment"></span></div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</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="l00069"></a><span class="lineno"> 69</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="l00070"></a><span class="lineno"> 70</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="l00071"></a><span class="lineno"> 71</span> </div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</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="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</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="l00075"></a><span class="lineno"> 75</span> <span class="comment"></span></div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> /// `x` and `xids` can be resident on the CPU or any GPU; the proper</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> /// copies are performed</span></div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#a99c11ab640b70725d5975763e7393894">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="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a>* xids) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"></span></div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> /// `x`, `distances` and `labels` can be resident on the CPU or any</span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> /// GPU; copies are performed as needed</span></div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexIVFFlat.html#ad101d8f209f3a269ef75d8d5797ec56f">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="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</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="l00087"></a><span class="lineno"> 87</span>  <span class="keywordtype">float</span>* distances,</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>* labels) <span class="keyword">const override</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>  <span class="keywordtype">void</span> set_typename() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">private</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> /// Is float16 encoding enabled for our IVF data?</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"></span> <span class="keywordtype">bool</span> useFloat16IVFStorage_;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"></span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> /// Desired inverted list memory reservation</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"></span> <span class="keywordtype">size_t</span> reserveMemoryVecs_;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"></span></div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> /// Instance that we own; contains the inverted list</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</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="l00101"></a><span class="lineno"> 101</span> };</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</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_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_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_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="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_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="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_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_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_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_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#l00025">GpuIndexIVFFlat.h:25</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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