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0df3f646fc
various bugfixes from github issues kmean with some frozen centroids GPU better tiling for large flat datasets default AVX for vector ops
342 lines
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342 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">IndexProxy.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/**</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * This source code is licensed under the BSD+Patents license found in the</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Copyright 2004-present Facebook. All Rights Reserved.</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "IndexProxy.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "../FaissAssert.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "../Clustering.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "GpuIndexFlat.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "StandardGpuResources.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <cstring></span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</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> IndexProxy::IndexProxy():own_fields(false) {</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> IndexProxy::~IndexProxy() {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keywordflow">if</span> (own_fields) {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& index : indices_)</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">delete</span> index.first;</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  }</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</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="keywordtype">void</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IndexProxy.html#af9bb81e75f8d5471094e4d4776a56f63"> 32</a></span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#af9bb81e75f8d5471094e4d4776a56f63">IndexProxy::addIndex</a>(<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>* index) {</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="comment">// Make sure that the parameters are the same for all prior indices</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">if</span> (!indices_.empty()) {</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">auto</span>& existing = indices_.front().first;</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">if</span> (index-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a> != existing->d) {</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  FAISS_ASSERT(<span class="keyword">false</span>);</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  }</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">if</span> (index-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> != existing->ntotal) {</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  FAISS_ASSERT(<span class="keyword">false</span>);</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  }</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">if</span> (index-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> != existing->metric_type) {</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  FAISS_ASSERT(<span class="keyword">false</span>);</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// Set our parameters</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// FIXME: this is a little bit weird</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  this-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a> = index-><a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = index-><a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  this-><a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a> = index-><a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  this-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a> = index-><a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  this-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> = index-><a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a>;</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  }</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  indices_.emplace_back(</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  std::make_pair(index,</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  std::unique_ptr<WorkerThread>(<span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1WorkerThread.html">WorkerThread</a>)));</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> }</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> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IndexProxy.html#a99aaeb0573880fa4d6efaeb39f93deeb"> 67</a></span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#a99aaeb0573880fa4d6efaeb39f93deeb">IndexProxy::removeIndex</a>(<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>* index) {</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> it = indices_.begin(); it != indices_.end(); ++it) {</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> (it->first == index) {</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// This is our index; stop the worker thread before removing it,</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// to ensure that it has finished before function exit</span></div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  it->second->stop();</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  it->second->waitForThreadExit();</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  indices_.erase(it);</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// index not found</span></div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  FAISS_ASSERT(<span class="keyword">false</span>);</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> }</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IndexProxy.html#a4efa3134256a6cd6a98c45184a7e8dbf"> 85</a></span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#a4efa3134256a6cd6a98c45184a7e8dbf">IndexProxy::runOnIndex</a>(std::function<<span class="keywordtype">void</span>(<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>*)> f) {</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  std::vector<std::future<bool>> v;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& index : indices_) {</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">auto</span> indexPtr = index.first;</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  v.emplace_back(index.second->add([indexPtr, f](){ f(indexPtr); }));</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// Blocking wait for completion</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& func : v) {</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  func.get();</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> }</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IndexProxy.html#a7f1b8287a607c80f2bb92f4ac0300649"> 100</a></span> IndexProxy::reset() {</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  runOnIndex([](<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>* index){ index-><a class="code" href="structfaiss_1_1Index.html#a849361f5f0ab0aba8d419c86f2594191">reset</a>(); });</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  ntotal = 0;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> }</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IndexProxy.html#aee6fe7e95b02238103a6a2d1f6d2cd00"> 106</a></span> IndexProxy::train(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) {</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  runOnIndex([n, x](<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>* index){ index-><a class="code" href="structfaiss_1_1Index.html#a1ffe916c958605c38b0b1bfad42485e4">train</a>(n, x); });</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> }</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IndexProxy.html#a61319b7ea215bf0ec6709443d8d4ee20"> 111</a></span> IndexProxy::add(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) {</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  runOnIndex([n, x](<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>* index){ index-><a class="code" href="structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2">add</a>(n, x); });</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  ntotal += n;</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> }</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IndexProxy.html#a8bf6d513b4f41fb533f0d023c1e143ba"> 117</a></span> IndexProxy::reconstruct(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n, <span class="keywordtype">float</span>* x)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  FAISS_ASSERT (count() > 0);</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  indices_[0].first->reconstruct (n, x);</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> </div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="keywordtype">void</span></div>
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<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IndexProxy.html#a25ed68079907eeeca9d441cdd4fc0740"> 124</a></span> IndexProxy::search(<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="l00125"></a><span class="lineno"> 125</span>  <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</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="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">float</span>* distances,</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>* labels)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  FAISS_ASSERT(!indices_.empty());</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">if</span> (n == 0) {</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  }</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">auto</span> dim = indices_.front().first->d;</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  std::vector<std::future<bool>> v;</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// Partition the query by the number of indices we have</span></div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keyword">auto</span> queriesPerIndex =</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  (<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>) (n + indices_.size() - 1) / indices_.size();</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  FAISS_ASSERT(n / queriesPerIndex <= indices_.size());</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < indices_.size(); ++i) {</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keyword">auto</span> base = i * queriesPerIndex;</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">if</span> (base >= n) {</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  }</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keyword">auto</span> numForIndex = std::min(queriesPerIndex, n - base);</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keyword">auto</span> queryStart = x + base * dim;</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">auto</span> distancesStart = distances + base * k;</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keyword">auto</span> labelsStart = labels + base * k;</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="keyword">auto</span> indexPtr = indices_[i].first;</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keyword">auto</span> fn =</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  [indexPtr, numForIndex, queryStart, k, distancesStart, labelsStart]() {</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  indexPtr->search(numForIndex, queryStart,</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  k, distancesStart, labelsStart);</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  };</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  v.emplace_back(indices_[i].second->add(std::move(fn)));</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">// Blocking wait for completion</span></div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& f : v) {</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  f.get();</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> }</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment">// GPU clustering implementation</span></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> </div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="keywordtype">float</span> kmeans_clustering_gpu (<span class="keywordtype">int</span> ngpu, <span class="keywordtype">size_t</span> d, <span class="keywordtype">size_t</span> n, <span class="keywordtype">size_t</span> k,</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">const</span> <span class="keywordtype">float</span> *x,</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordtype">float</span> *centroids,</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordtype">bool</span> useFloat16,</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordtype">bool</span> storeTransposed)</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>  <a class="code" href="structfaiss_1_1Clustering.html">Clustering</a> clus (d, k);</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="comment">// display logs if > 16Gflop per iteration</span></div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  clus.verbose = d * n * k > (1L << 34);</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  FAISS_ASSERT(ngpu >= 1);</div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  std::vector<std::unique_ptr<StandardGpuResources> > res;</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  std::vector<std::unique_ptr<GpuIndexFlatL2> > sub_indices;</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> dev_no = 0; dev_no < ngpu; dev_no++) {</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  res.emplace_back(<span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1StandardGpuResources.html">StandardGpuResources</a>());</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html">GpuIndexFlatConfig</a> config;</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  config.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexConfig.html#aab05a0aa7b42feae7df4e556a52ead57">device</a> = dev_no;</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  config.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#afd694186c87751937a646f3db2c8ba3d">useFloat16</a> = useFloat16;</div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  config.<a class="code" href="structfaiss_1_1gpu_1_1GpuIndexFlatConfig.html#a0342a26f5e59563bfe04f3f80e3b27f0">storeTransposed</a> = storeTransposed;</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
|
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  sub_indices.emplace_back(</div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keyword">new</span> <a class="code" href="classfaiss_1_1gpu_1_1GpuIndexFlatL2.html">GpuIndexFlatL2</a>(res.back().get(), d, config));</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div>
|
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
|
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  IndexProxy proxy;</div>
|
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <a class="code" href="structfaiss_1_1Index.html">Index</a> *index;</div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> (ngpu == 1) {</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  index = sub_indices[0].get();</div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> dev_no = 0; dev_no < ngpu; dev_no++) {</div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  proxy.addIndex(sub_indices[dev_no].<span class="keyword">get</span>());</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  }</div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  index = &proxy;</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  }</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  clus.<a class="code" href="structfaiss_1_1Index.html#a1ffe916c958605c38b0b1bfad42485e4">train</a> (n, x, *index);</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  memcpy(centroids, clus.centroids.data(), <span class="keyword">sizeof</span>(*centroids) * d * k);</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">return</span> clus.obj.back();</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> }</div>
|
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> } } <span class="comment">// namespace</span></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#l00048">GpuIndexFlat.h:48</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_a99aaeb0573880fa4d6efaeb39f93deeb"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#a99aaeb0573880fa4d6efaeb39f93deeb">faiss::gpu::IndexProxy::removeIndex</a></div><div class="ttdeci">void removeIndex(faiss::Index *index)</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00067">IndexProxy.cpp:67</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_a4efa3134256a6cd6a98c45184a7e8dbf"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#a4efa3134256a6cd6a98c45184a7e8dbf">faiss::gpu::IndexProxy::runOnIndex</a></div><div class="ttdeci">void runOnIndex(std::function< void(faiss::Index *)> f)</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00085">IndexProxy.cpp:85</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a849361f5f0ab0aba8d419c86f2594191"><div class="ttname"><a href="structfaiss_1_1Index.html#a849361f5f0ab0aba8d419c86f2594191">faiss::Index::reset</a></div><div class="ttdeci">virtual void reset()=0</div><div class="ttdoc">removes all elements from the database. </div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1WorkerThread_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1WorkerThread.html">faiss::gpu::WorkerThread</a></div><div class="ttdef"><b>Definition:</b> <a href="WorkerThread_8h_source.html#l00020">WorkerThread.h:20</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a1ffe916c958605c38b0b1bfad42485e4"><div class="ttname"><a href="structfaiss_1_1Index.html#a1ffe916c958605c38b0b1bfad42485e4">faiss::Index::train</a></div><div class="ttdeci">virtual void train(idx_t, const float *)</div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00089">Index.h:89</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#l00035">GpuIndexFlat.h:35</a></div></div>
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<div class="ttc" id="structfaiss_1_1gpu_1_1GpuIndexConfig_html_aab05a0aa7b42feae7df4e556a52ead57"><div class="ttname"><a href="structfaiss_1_1gpu_1_1GpuIndexConfig.html#aab05a0aa7b42feae7df4e556a52ead57">faiss::gpu::GpuIndexConfig::device</a></div><div class="ttdeci">int device</div><div class="ttdoc">GPU device on which the index is resident. </div><div class="ttdef"><b>Definition:</b> <a href="GpuIndex_8h_source.html#l00027">GpuIndex.h:27</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d"><div class="ttname"><a href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">faiss::Index::d</a></div><div class="ttdeci">int d</div><div class="ttdoc">vector dimension </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00064">Index.h:64</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#l00027">GpuIndexFlat.h:27</a></div></div>
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<div class="ttc" id="structfaiss_1_1Clustering_html"><div class="ttname"><a href="structfaiss_1_1Clustering.html">faiss::Clustering</a></div><div class="ttdef"><b>Definition:</b> <a href="Clustering_8h_source.html#l00057">Clustering.h:57</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a1b5e9ac70adbce0897dd6c8276ad96f2"><div class="ttname"><a href="structfaiss_1_1Index.html#a1b5e9ac70adbce0897dd6c8276ad96f2">faiss::Index::add</a></div><div class="ttdeci">virtual void add(idx_t n, const float *x)=0</div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1StandardGpuResources_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1StandardGpuResources.html">faiss::gpu::StandardGpuResources</a></div><div class="ttdef"><b>Definition:</b> <a href="StandardGpuResources_8h_source.html#l00023">StandardGpuResources.h:23</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a040c6aed1f224f3ea7bf58eebc0c31a4"><div class="ttname"><a href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a6970683faa021b7a6f1a0865c0d4eccd"><div class="ttname"><a href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">faiss::Index::ntotal</a></div><div class="ttdeci">idx_t ntotal</div><div class="ttdoc">total nb of indexed vectors </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00065">Index.h:65</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a5590d847c5c2b958affd2a05e58a6f23"><div class="ttname"><a href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">faiss::Index::verbose</a></div><div class="ttdeci">bool verbose</div><div class="ttdoc">verbosity level </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00066">Index.h:66</a></div></div>
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<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_af9bb81e75f8d5471094e4d4776a56f63"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#af9bb81e75f8d5471094e4d4776a56f63">faiss::gpu::IndexProxy::addIndex</a></div><div class="ttdeci">void addIndex(faiss::Index *index)</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00032">IndexProxy.cpp:32</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#l00169">GpuIndexFlat.h:169</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a8e18f641854b2bde83ecff0a2f9a6f4e"><div class="ttname"><a href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">faiss::Index::metric_type</a></div><div class="ttdeci">MetricType metric_type</div><div class="ttdoc">type of metric this index uses for search </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00072">Index.h:72</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html"><div class="ttname"><a href="structfaiss_1_1Index.html">faiss::Index</a></div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00060">Index.h:60</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html_a6e92732617c4dbe364e7678dd8773a7f"><div class="ttname"><a href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">faiss::Index::is_trained</a></div><div class="ttdeci">bool is_trained</div><div class="ttdoc">set if the Index does not require training, or if training is done already </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00069">Index.h:69</a></div></div>
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