316 lines
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316 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">GpuIndexFlat.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 "GpuIndex.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 {</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">struct </span>IndexFlat;</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">struct </span>IndexFlatL2;</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">struct </span>IndexFlatIP;</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> }</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"> 26</span> <span class="keyword">struct </span>FlatIndex;</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"></span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">/// Wrapper around the GPU implementation that looks like</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">/// faiss::IndexFlat; copies over centroid data from a given</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">/// faiss::IndexFlat</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html"> 31</a></span> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html">GpuIndexFlat</a> : <span class="keyword">public</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndex.html">GpuIndex</a> {</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">public</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> /// Construct from a pre-existing faiss::IndexFlat instance, copying</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> /// data over to the given GPU</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#adb02cf2994b32a981cfa10850607c1f5">GpuIndexFlat</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">int</span> device,</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordtype">bool</span> useFloat16,</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keyword">const</span> <a class="code" href="structfaiss_1_1IndexFlat.html">faiss::IndexFlat</a>* index);</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"> /// Construct an empty instance that can be added to</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#adb02cf2994b32a981cfa10850607c1f5">GpuIndexFlat</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordtype">int</span> device,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordtype">bool</span> useFloat16,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric);</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  ~<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html">GpuIndexFlat</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"></span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> /// Set the minimum data size for searches (in MiB) for which we use</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> /// CPU -> GPU paging</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a752f8129ccb94fa0c6f346ae03ff536d">setMinPagingSize</a>(<span class="keywordtype">size_t</span> size);</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"></span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> /// Returns the current minimum data size for paged searches</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"></span> <span class="keywordtype">size_t</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a44532c7e5165d36e5da57272d37544ae">getMinPagingSize</a>() <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"></span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> /// Do we store vectors and perform math in float16?</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">bool</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#af9b5ff82eb54a6d0632d515db4ee3994">getUseFloat16</a>() <span class="keyword">const</span>;</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"> /// Initialize ourselves from the given CPU index; will overwrite</span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> /// all data in ourselves</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_1GpuIndexFlat.html#abb964875e0893de1d8334ca5ad0f62dc">copyFrom</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IndexFlat.html">faiss::IndexFlat</a>* index);</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"> /// Copy ourselves to the given CPU index; will overwrite all data</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> /// in the index instance</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">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a046007ff2fafcafc6ae328769c700e39">copyTo</a>(<a class="code" href="structfaiss_1_1IndexFlat.html">faiss::IndexFlat</a>* index) <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"></span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> /// Returns the number of vectors we contain</span></div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span> <span class="keywordtype">size_t</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a51b5aa0d68670ec7ccb32b0353c7387f">getNumVecs</a>() <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"></span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> /// Clears all vectors from this index</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a67161796f274a7171a67c36bdf1ef1db">reset</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"></span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> /// This index is not trained, so this does nothing</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a0e74fad76628ddfb5ae3dc1d1c69f7e8">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` can be resident on the CPU or any GPU; the proper copies are</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> /// 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_1GpuIndexFlat.html#aca24d09a00743aa3087c1a14a66995b9">add</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"></span></div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</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="l00081"></a><span class="lineno"> 81</span> <span class="comment"> /// GPU; copies are performed as needed</span></div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ac0f0301829363f920e619f673a4d97f3">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="l00083"></a><span class="lineno"> 83</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</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> k,</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordtype">float</span>* distances,</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>* labels) <span class="keyword">const override</span>;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"></span></div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> /// Reconstruction methods; prefer the batch reconstruct as it will</span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> /// be more efficient</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">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a7f1cdf03d3545a43fc91bb5cace3b6fd">reconstruct</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> key, <span class="keywordtype">float</span>* out) <span class="keyword">const override</span>;</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"> /// Batch reconstruction method</span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a472732e9bd8ffb1aa4c3abc31063dd28">reconstruct_n</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> i0,</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> num,</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">float</span>* out) <span class="keyword">const override</span>;</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordtype">void</span> set_typename() <span class="keyword">override</span>;</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"> /// For internal access</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7"> 100</a></span> <span class="comment"></span> <span class="keyword">inline</span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html">FlatIndex</a>* <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7">getGpuData</a>() { <span class="keywordflow">return</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ae393840fc80403369452c25c9155e067">data_</a>; }</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="keyword">protected</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> /// Called from search when the input data is on the CPU;</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> /// potentially allows for pinned memory usage</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#afedeff5442b6ed94f856cecb8d8e598d">searchFromCpuPaged_</a>(<span class="keywordtype">int</span> n,</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordtype">int</span> k,</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordtype">float</span>* outDistancesData,</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordtype">int</span>* outIndicesData) <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordtype">void</span> searchNonPaged_(<span class="keywordtype">int</span> n,</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">int</span> k,</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordtype">float</span>* outDistancesData,</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordtype">int</span>* outIndicesData) <span class="keyword">const</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="keyword">protected</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> /// Size above which we page copies from the CPU to GPU</span></div>
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<div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#aad665a7b5888b4aafd47ae0f8d0e6c40"> 119</a></span> <span class="comment"></span> <span class="keywordtype">size_t</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#aad665a7b5888b4aafd47ae0f8d0e6c40">minPagedSize_</a>;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"></span></div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> /// Whether or not we store our vectors in float32 or float16</span></div>
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<div class="line"><a name="l00122"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ad09fbc6ed81eb30533c56a3ef262b022"> 122</a></span> <span class="comment"></span> <span class="keyword">const</span> <span class="keywordtype">bool</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ad09fbc6ed81eb30533c56a3ef262b022">useFloat16_</a>;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"></span></div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> /// Holds our GPU data containing the list of vectors</span></div>
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<div class="line"><a name="l00125"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ae393840fc80403369452c25c9155e067"> 125</a></span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1FlatIndex.html">FlatIndex</a>* <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ae393840fc80403369452c25c9155e067">data_</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> <span class="comment"></span></div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment">/// Wrapper around the GPU implementation that looks like</span></div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment">/// faiss::IndexFlatL2; copies over centroid data from a given</span></div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment">/// faiss::IndexFlat</span></div>
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<div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html"> 131</a></span> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html">GpuIndexFlatL2</a> : <span class="keyword">public</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html">GpuIndexFlat</a> {</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">public</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> /// Construct from a pre-existing faiss::IndexFlatL2 instance, copying</span></div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> /// data over to the given GPU</span></div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#a2056e4356f0628afbee8881eb915406b">GpuIndexFlatL2</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordtype">int</span> device,</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordtype">bool</span> useFloat16,</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a>* index);</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"></span></div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> /// Construct an empty instance that can be added to</span></div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#a2056e4356f0628afbee8881eb915406b">GpuIndexFlatL2</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">int</span> device,</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordtype">bool</span> useFloat16);</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"></span></div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> /// Initialize ourselves from the given CPU index; will overwrite</span></div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> /// all data in ourselves</span></div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#a9a9de859274bb73e6d8ea02cae5ca9a6">copyFrom</a>(<a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a>* index);</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"></span></div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</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="l00151"></a><span class="lineno"> 151</span> <span class="comment"> /// in the index instance</span></div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#ab21960d379190b98aaa05ae3877dea09">copyTo</a>(<a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a>* index);</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> };</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"></span></div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment">/// Wrapper around the GPU implementation that looks like</span></div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment">/// faiss::IndexFlatIP; copies over centroid data from a given</span></div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment">/// faiss::IndexFlat</span></div>
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<div class="line"><a name="l00158"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html"> 158</a></span> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html">GpuIndexFlatIP</a> : <span class="keyword">public</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html">GpuIndexFlat</a> {</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">public</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"> /// Construct from a pre-existing faiss::IndexFlatIP instance, copying</span></div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"> /// data over to the given GPU</span></div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html#a5e145b6277778b884508eb351efb1814">GpuIndexFlatIP</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordtype">int</span> device,</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordtype">bool</span> useFloat16,</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <a class="code" href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a>* index);</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"></span></div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"> /// Construct an empty instance that can be added to</span></div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html#a5e145b6277778b884508eb351efb1814">GpuIndexFlatIP</a>(<a class="code" href="classfaiss_1_1gpu_1_1GpuResources.html">GpuResources</a>* resources,</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordtype">int</span> device,</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordtype">bool</span> useFloat16);</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"></span></div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> /// Initialize ourselves from the given CPU index; will overwrite</span></div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> /// all data in ourselves</span></div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html#aa181b1778a8dca81ac5cf6cd6a3d5f1d">copyFrom</a>(<a class="code" href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a>* index);</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment"></span></div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</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="l00178"></a><span class="lineno"> 178</span> <span class="comment"> /// in the index instance</span></div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html#af70d0fe80cf3bf16ffffd8b16ed64f08">copyTo</a>(<a class="code" href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a>* index);</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> };</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> } } <span class="comment">// namespace</span></div>
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<div class="ttc" id="structfaiss_1_1IndexFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexFlat.html">faiss::IndexFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00024">IndexFlat.h:24</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_adb02cf2994b32a981cfa10850607c1f5"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#adb02cf2994b32a981cfa10850607c1f5">faiss::gpu::GpuIndexFlat::GpuIndexFlat</a></div><div class="ttdeci">GpuIndexFlat(GpuResources *resources, int device, bool useFloat16, const faiss::IndexFlat *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00033">GpuIndexFlat.cu:33</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatL2_html_a9a9de859274bb73e6d8ea02cae5ca9a6"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#a9a9de859274bb73e6d8ea02cae5ca9a6">faiss::gpu::GpuIndexFlatL2::copyFrom</a></div><div class="ttdeci">void copyFrom(faiss::IndexFlatL2 *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00503">GpuIndexFlat.cu:503</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a046007ff2fafcafc6ae328769c700e39"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a046007ff2fafcafc6ae328769c700e39">faiss::gpu::GpuIndexFlat::copyTo</a></div><div class="ttdeci">void copyTo(faiss::IndexFlat *index) const </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00107">GpuIndexFlat.cu:107</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a472732e9bd8ffb1aa4c3abc31063dd28"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a472732e9bd8ffb1aa4c3abc31063dd28">faiss::gpu::GpuIndexFlat::reconstruct_n</a></div><div class="ttdeci">void reconstruct_n(faiss::Index::idx_t i0, faiss::Index::idx_t num, float *out) const override</div><div class="ttdoc">Batch reconstruction method. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00457">GpuIndexFlat.cu:457</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a44532c7e5165d36e5da57272d37544ae"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a44532c7e5165d36e5da57272d37544ae">faiss::gpu::GpuIndexFlat::getMinPagingSize</a></div><div class="ttdeci">size_t getMinPagingSize() const </div><div class="ttdoc">Returns the current minimum data size for paged searches. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00071">GpuIndexFlat.cu:71</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1FlatIndex_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1FlatIndex.html">faiss::gpu::FlatIndex</a></div><div class="ttdoc">Holder of GPU resources for a particular flat index. </div><div class="ttdef"><b>Definition:</b> <a href="FlatIndex_8cuh_source.html#l00023">FlatIndex.cuh:23</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_1GpuIndexFlatL2_html_ab21960d379190b98aaa05ae3877dea09"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#ab21960d379190b98aaa05ae3877dea09">faiss::gpu::GpuIndexFlatL2::copyTo</a></div><div class="ttdeci">void copyTo(faiss::IndexFlatL2 *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00508">GpuIndexFlat.cu:508</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexFlatL2_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00081">IndexFlat.h:81</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_afedeff5442b6ed94f856cecb8d8e598d"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#afedeff5442b6ed94f856cecb8d8e598d">faiss::gpu::GpuIndexFlat::searchFromCpuPaged_</a></div><div class="ttdeci">void searchFromCpuPaged_(int n, const float *x, int k, float *outDistancesData, int *outIndicesData) const </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00268">GpuIndexFlat.cu:268</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_ad09fbc6ed81eb30533c56a3ef262b022"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ad09fbc6ed81eb30533c56a3ef262b022">faiss::gpu::GpuIndexFlat::useFloat16_</a></div><div class="ttdeci">const bool useFloat16_</div><div class="ttdoc">Whether or not we store our vectors in float32 or float16. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00122">GpuIndexFlat.h:122</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a51b5aa0d68670ec7ccb32b0353c7387f"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a51b5aa0d68670ec7ccb32b0353c7387f">faiss::gpu::GpuIndexFlat::getNumVecs</a></div><div class="ttdeci">size_t getNumVecs() const </div><div class="ttdoc">Returns the number of vectors we contain. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00130">GpuIndexFlat.cu:130</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_1IndexFlatIP_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00075">IndexFlat.h:75</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a752f8129ccb94fa0c6f346ae03ff536d"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a752f8129ccb94fa0c6f346ae03ff536d">faiss::gpu::GpuIndexFlat::setMinPagingSize</a></div><div class="ttdeci">void setMinPagingSize(size_t size)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00066">GpuIndexFlat.cu:66</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndex_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndex.html">faiss::gpu::GpuIndex</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndex_8h_source.html#l00020">GpuIndex.h:20</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_af9b5ff82eb54a6d0632d515db4ee3994"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#af9b5ff82eb54a6d0632d515db4ee3994">faiss::gpu::GpuIndexFlat::getUseFloat16</a></div><div class="ttdeci">bool getUseFloat16() const </div><div class="ttdoc">Do we store vectors and perform math in float16? </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00076">GpuIndexFlat.cu:76</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatL2_html_a2056e4356f0628afbee8881eb915406b"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#a2056e4356f0628afbee8881eb915406b">faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2</a></div><div class="ttdeci">GpuIndexFlatL2(GpuResources *resources, int device, bool useFloat16, faiss::IndexFlatL2 *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00488">GpuIndexFlat.cu:488</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a7f1cdf03d3545a43fc91bb5cace3b6fd"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a7f1cdf03d3545a43fc91bb5cace3b6fd">faiss::gpu::GpuIndexFlat::reconstruct</a></div><div class="ttdeci">void reconstruct(faiss::Index::idx_t key, float *out) const override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00440">GpuIndexFlat.cu:440</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatIP_html_af70d0fe80cf3bf16ffffd8b16ed64f08"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html#af70d0fe80cf3bf16ffffd8b16ed64f08">faiss::gpu::GpuIndexFlatIP::copyTo</a></div><div class="ttdeci">void copyTo(faiss::IndexFlatIP *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00537">GpuIndexFlat.cu:537</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_1GpuIndexFlatIP_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html">faiss::gpu::GpuIndexFlatIP</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00158">GpuIndexFlat.h:158</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_abb964875e0893de1d8334ca5ad0f62dc"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#abb964875e0893de1d8334ca5ad0f62dc">faiss::gpu::GpuIndexFlat::copyFrom</a></div><div class="ttdeci">void copyFrom(const faiss::IndexFlat *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00081">GpuIndexFlat.cu:81</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_aca24d09a00743aa3087c1a14a66995b9"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#aca24d09a00743aa3087c1a14a66995b9">faiss::gpu::GpuIndexFlat::add</a></div><div class="ttdeci">void add(Index::idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00149">GpuIndexFlat.cu:149</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_aad665a7b5888b4aafd47ae0f8d0e6c40"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#aad665a7b5888b4aafd47ae0f8d0e6c40">faiss::gpu::GpuIndexFlat::minPagedSize_</a></div><div class="ttdeci">size_t minPagedSize_</div><div class="ttdoc">Size above which we page copies from the CPU to GPU. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00119">GpuIndexFlat.h:119</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatIP_html_a5e145b6277778b884508eb351efb1814"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html#a5e145b6277778b884508eb351efb1814">faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP</a></div><div class="ttdeci">GpuIndexFlatIP(GpuResources *resources, int device, bool useFloat16, faiss::IndexFlatIP *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00516">GpuIndexFlat.cu:516</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatL2_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html">faiss::gpu::GpuIndexFlatL2</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00131">GpuIndexFlat.h:131</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_1GpuIndexFlat_html_a67161796f274a7171a67c36bdf1ef1db"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a67161796f274a7171a67c36bdf1ef1db">faiss::gpu::GpuIndexFlat::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">Clears all vectors from this index. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00135">GpuIndexFlat.cu:135</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatIP_html_aa181b1778a8dca81ac5cf6cd6a3d5f1d"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html#aa181b1778a8dca81ac5cf6cd6a3d5f1d">faiss::gpu::GpuIndexFlatIP::copyFrom</a></div><div class="ttdeci">void copyFrom(faiss::IndexFlatIP *index)</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00532">GpuIndexFlat.cu:532</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_ac0f0301829363f920e619f673a4d97f3"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ac0f0301829363f920e619f673a4d97f3">faiss::gpu::GpuIndexFlat::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="GpuIndexFlat_8cu_source.html#l00167">GpuIndexFlat.cu:167</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a0e74fad76628ddfb5ae3dc1d1c69f7e8"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a0e74fad76628ddfb5ae3dc1d1c69f7e8">faiss::gpu::GpuIndexFlat::train</a></div><div class="ttdeci">void train(Index::idx_t n, const float *x) override</div><div class="ttdoc">This index is not trained, so this does nothing. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00144">GpuIndexFlat.cu:144</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="classfaiss_1_1gpu_1_1GpuIndexFlat_html_ae393840fc80403369452c25c9155e067"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ae393840fc80403369452c25c9155e067">faiss::gpu::GpuIndexFlat::data_</a></div><div class="ttdeci">FlatIndex * data_</div><div class="ttdoc">Holds our GPU data containing the list of vectors. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00125">GpuIndexFlat.h:125</a></div></div>
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