316 lines
53 KiB
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316 lines
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<li class="navelem"><a class="el" href="dir_5956a3e80a20e8e03eb577bedb92689f.html">gpu</a></li> </ul>
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<div class="title">GpuIndexFlat.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) Facebook, Inc. and its affiliates.</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * This source code is licensed under the MIT license found in the</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</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="l00006"></a><span class="lineno"> 6</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</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="preprocessor">#pragma once</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "GpuIndex.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">namespace </span>faiss {</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">struct </span>IndexFlat;</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">struct </span>IndexFlatL2;</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">struct </span>IndexFlatIP;</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> }</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</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> <span class="keyword">struct </span>FlatIndex;</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html"> 25</a></span> <span class="keyword">struct </span><a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> : <span class="keyword">public</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexConfig.html">GpuIndexConfig</a> {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">inline</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a>()</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  : <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#afd694186c87751937a646f3db2c8ba3d">useFloat16</a>(<span class="keyword">false</span>),</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a5a2d8737f4277e55fc1a99ef4fc4c630">useFloat16Accumulator</a>(<span class="keyword">false</span>),</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a0342a26f5e59563bfe04f3f80e3b27f0">storeTransposed</a>(<span class="keyword">false</span>) {</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"> /// Whether or not data is stored as float16</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#afd694186c87751937a646f3db2c8ba3d"> 33</a></span> <span class="comment"></span> <span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#afd694186c87751937a646f3db2c8ba3d">useFloat16</a>;</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"></span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> /// Whether or not all math is performed in float16, if useFloat16 is</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> /// specified. If true, we use cublasHgemm, supported only on CC</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> /// 5.3+. Otherwise, we use cublasSgemmEx.</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a5a2d8737f4277e55fc1a99ef4fc4c630"> 38</a></span> <span class="comment"></span> <span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a5a2d8737f4277e55fc1a99ef4fc4c630">useFloat16Accumulator</a>;</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"> /// Whether or not data is stored (transparently) in a transposed</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> /// layout, enabling use of the NN GEMM call, which is ~10% faster.</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> /// This will improve the speed of the flat index, but will</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> /// substantially slow down any add() calls made, as all data must</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> /// be transposed, and will increase storage requirements (we store</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> /// data in both transposed and non-transposed layouts).</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a0342a26f5e59563bfe04f3f80e3b27f0"> 46</a></span> <span class="comment"></span> <span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a0342a26f5e59563bfe04f3f80e3b27f0">storeTransposed</a>;</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> };</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"></span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">/// Wrapper around the GPU implementation that looks like</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment">/// faiss::IndexFlat; copies over centroid data from a given</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment">/// faiss::IndexFlat</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html"> 52</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="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">public</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> /// Construct from a pre-existing faiss::IndexFlat instance, copying</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> /// data over to the given GPU</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#af8a1626e4c54a451d0b9f82df3a6687e">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="l00057"></a><span class="lineno"> 57</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="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a>());</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"> /// Construct an empty instance that can be added to</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#af8a1626e4c54a451d0b9f82df3a6687e">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="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a> metric,</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a>());</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  ~<a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html">GpuIndexFlat</a>() <span class="keyword">override</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"> /// Initialize ourselves from the given CPU index; will overwrite</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> /// all data in ourselves</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">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="l00071"></a><span class="lineno"> 71</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"> /// Copy ourselves to the given CPU index; will overwrite all data</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> /// in the index instance</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#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="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"> /// Returns the number of vectors we contain</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</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="l00078"></a><span class="lineno"> 78</span> <span class="comment"></span></div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> /// Clears all vectors from this index</span></div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</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="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"> /// This index is not trained, so this does nothing</span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</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#ad3f0d3071f987baabbdd3da4500c87ea">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="l00084"></a><span class="lineno"> 84</span> <span class="comment"></span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> /// Overrides to avoid excessive copies</span></div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a35d31b6b5ea89629b369655fd03bd505">add</a>(<a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">faiss::Index::idx_t</a>, <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="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#ad3f0d3071f987baabbdd3da4500c87ea">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>(</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#ad3f0d3071f987baabbdd3da4500c87ea">faiss::Index::idx_t</a> i0,</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">faiss::Index::idx_t</a> num,</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordtype">float</span>* out) <span class="keyword">const override</span>;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"></span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> /// For internal access</span></div>
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<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a310b00d4443920a855b11276d488c9a7"> 99</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="l00100"></a><span class="lineno"> 100</span> </div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">protected</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> /// Flat index does not require IDs as there is no storage available for them</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"></span> <span class="keywordtype">bool</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ad42677502d391e88427b26da1ae9bd2d">addImplRequiresIDs_</a>() <span class="keyword">const override</span>;</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"></span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> /// Called from GpuIndex for add</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a3f2744527184208d1b845dda9d655a88">addImpl_</a>(<span class="keywordtype">int</span> n,</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">Index::idx_t</a>* ids) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"></span></div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> /// Called from GpuIndex for search</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#abe12febd18da31fb6c3355a2c6bff3d4">searchImpl_</a>(<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>* distances,</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">faiss::Index::idx_t</a>* labels) <span class="keyword">const override</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">private</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"> /// Checks user settings for consistency</span></div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"></span> <span class="keywordtype">void</span> verifySettings_() <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">protected</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> /// Our config object</span></div>
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<div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a9efdc92bf03d2d6820fb989cf77e8067"> 123</a></span> <span class="comment"></span> <span class="keyword">const</span> <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a9efdc92bf03d2d6820fb989cf77e8067">config_</a>;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"></span></div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> /// Holds our GPU data containing the list of vectors; is managed via raw</span></div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> /// pointer so as to allow non-CUDA compilers to see this header</span></div>
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<div class="line"><a name="l00127"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ae393840fc80403369452c25c9155e067"> 127</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="l00128"></a><span class="lineno"> 128</span> };</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"></span></div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment">/// Wrapper around the GPU implementation that looks like</span></div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment">/// faiss::IndexFlatL2; copies over centroid data from a given</span></div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment">/// faiss::IndexFlat</span></div>
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<div class="line"><a name="l00133"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html"> 133</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="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">public</span>:<span class="comment"></span></div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> /// Construct from a pre-existing faiss::IndexFlatL2 instance, copying</span></div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> /// data over to the given GPU</span></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#aed22de4a439fa0b2f560e3c716a7c626">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="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>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a>());</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"></span></div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> /// Construct an empty instance that can be added to</span></div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#aed22de4a439fa0b2f560e3c716a7c626">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="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>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a>());</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#a5f8c6e1a31cae06f6a5bcd1828307304">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>  <a class="code" href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a>* index,</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a>());</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"></span></div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> /// Construct an empty instance that can be added to</span></div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"></span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html#a5f8c6e1a31cae06f6a5bcd1828307304">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="l00168"></a><span class="lineno"> 168</span>  <span class="keywordtype">int</span> dims,</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> config = <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a>());</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment"></span></div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment"> /// Initialize ourselves from the given CPU index; will overwrite</span></div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"> /// all data in ourselves</span></div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</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="l00174"></a><span class="lineno"> 174</span> <span class="comment"></span></div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</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="l00176"></a><span class="lineno"> 176</span> <span class="comment"> /// in the index instance</span></div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</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="l00178"></a><span class="lineno"> 178</span> };</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</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#l00021">IndexFlat.h:21</a></div></div>
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<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexFlatConfig_html_a5a2d8737f4277e55fc1a99ef4fc4c630"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a5a2d8737f4277e55fc1a99ef4fc4c630">faiss::gpu::GpuIndexFlatConfig::useFloat16Accumulator</a></div><div class="ttdeci">bool useFloat16Accumulator</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00038">GpuIndexFlat.h:38</a></div></div>
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<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexFlatConfig_html_a0342a26f5e59563bfe04f3f80e3b27f0"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a0342a26f5e59563bfe04f3f80e3b27f0">faiss::gpu::GpuIndexFlatConfig::storeTransposed</a></div><div class="ttdeci">bool storeTransposed</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00046">GpuIndexFlat.h:46</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#l00297">GpuIndexFlat.cu:297</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#l00100">GpuIndexFlat.cu:100</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#l00243">GpuIndexFlat.cu:243</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#l00021">FlatIndex.cuh:21</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#l00099">GpuIndexFlat.h:99</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#l00302">GpuIndexFlat.cu:302</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#l00077">IndexFlat.h:77</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#l00124">GpuIndexFlat.cu:124</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_abe12febd18da31fb6c3355a2c6bff3d4"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#abe12febd18da31fb6c3355a2c6bff3d4">faiss::gpu::GpuIndexFlat::searchImpl_</a></div><div class="ttdeci">void searchImpl_(int n, const float *x, int 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="GpuIndexFlat_8cu_source.html#l00199">GpuIndexFlat.cu:199</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#l00021">GpuResources.h:21</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_af8a1626e4c54a451d0b9f82df3a6687e"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#af8a1626e4c54a451d0b9f82df3a6687e">faiss::gpu::GpuIndexFlat::GpuIndexFlat</a></div><div class="ttdeci">GpuIndexFlat(GpuResources *resources, const faiss::IndexFlat *index, GpuIndexFlatConfig config=GpuIndexFlatConfig())</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00025">GpuIndexFlat.cu:25</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#l00071">IndexFlat.h:71</a></div></div>
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<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexFlatConfig_html_afd694186c87751937a646f3db2c8ba3d"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#afd694186c87751937a646f3db2c8ba3d">faiss::gpu::GpuIndexFlatConfig::useFloat16</a></div><div class="ttdeci">bool useFloat16</div><div class="ttdoc">Whether or not data is stored as float16. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00033">GpuIndexFlat.h:33</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#l00033">GpuIndex.h:33</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatL2_html_aed22de4a439fa0b2f560e3c716a7c626"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html#aed22de4a439fa0b2f560e3c716a7c626">faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2</a></div><div class="ttdeci">GpuIndexFlatL2(GpuResources *resources, faiss::IndexFlatL2 *index, GpuIndexFlatConfig config=GpuIndexFlatConfig())</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00284">GpuIndexFlat.cu:284</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_ad3f0d3071f987baabbdd3da4500c87ea"><div class="ttname"><a href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">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_1GpuIndexFlatConfig_html"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">faiss::gpu::GpuIndexFlatConfig</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00025">GpuIndexFlat.h:25</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#l00226">GpuIndexFlat.cu:226</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#l00328">GpuIndexFlat.cu:328</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlatIP_html_a5f8c6e1a31cae06f6a5bcd1828307304"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlatIP.html#a5f8c6e1a31cae06f6a5bcd1828307304">faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP</a></div><div class="ttdeci">GpuIndexFlatIP(GpuResources *resources, faiss::IndexFlatIP *index, GpuIndexFlatConfig config=GpuIndexFlatConfig())</div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00310">GpuIndexFlat.cu:310</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a3f2744527184208d1b845dda9d655a88"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a3f2744527184208d1b845dda9d655a88">faiss::gpu::GpuIndexFlat::addImpl_</a></div><div class="ttdeci">void addImpl_(int n, const float *x, const Index::idx_t *ids) override</div><div class="ttdoc">Called from GpuIndex for add. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00178">GpuIndexFlat.cu:178</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#l00067">GpuIndexFlat.cu:67</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_ad42677502d391e88427b26da1ae9bd2d"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#ad42677502d391e88427b26da1ae9bd2d">faiss::gpu::GpuIndexFlat::addImplRequiresIDs_</a></div><div class="ttdeci">bool addImplRequiresIDs_() const override</div><div class="ttdoc">Flat index does not require IDs as there is no storage available for them. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00173">GpuIndexFlat.cu:173</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a9efdc92bf03d2d6820fb989cf77e8067"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a9efdc92bf03d2d6820fb989cf77e8067">faiss::gpu::GpuIndexFlat::config_</a></div><div class="ttdeci">const GpuIndexFlatConfig config_</div><div class="ttdoc">Our config object. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00123">GpuIndexFlat.h:123</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#l00133">GpuIndexFlat.h:133</a></div></div>
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<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexConfig_html"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexConfig.html">faiss::gpu::GpuIndexConfig</a></div><div class="ttdef"><b>Definition:</b> <a href="GpuIndex_8h_source.html#l00018">GpuIndex.h:18</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1GpuIndexFlat_html_a35d31b6b5ea89629b369655fd03bd505"><div class="ttname"><a href="classfaiss_1_1gpu_1_1GpuIndexFlat.html#a35d31b6b5ea89629b369655fd03bd505">faiss::gpu::GpuIndexFlat::add</a></div><div class="ttdeci">void add(faiss::Index::idx_t, const float *x) override</div><div class="ttdoc">Overrides to avoid excessive copies. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8cu_source.html#l00143">GpuIndexFlat.cu:143</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#l00052">GpuIndexFlat.h:52</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#l00129">GpuIndexFlat.cu:129</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#l00323">GpuIndexFlat.cu:323</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#l00138">GpuIndexFlat.cu:138</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#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="ttdef"><b>Definition:</b> <a href="GpuIndexFlat_8h_source.html#l00127">GpuIndexFlat.h:127</a></div></div>
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