2017-02-23 06:26:44 +08:00
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2017-03-01 17:50:47 +08:00
< title > Faiss: CompareIVFPQGrid.cu Source File< / title >
2017-02-23 06:26:44 +08:00
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< li class = "navelem" > < a class = "el" href = "dir_6b3ae6988449b0834e9596fad5d75199.html" > gpu< / a > < / li > < li class = "navelem" > < a class = "el" href = "dir_02dc1cf4df13911cc8cfd20f07047b71.html" > perf< / a > < / li > < / ul >
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< div class = "title" > CompareIVFPQGrid.cu< / 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 >
< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > /**< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > * Copyright (c) 2015-present, Facebook, Inc.< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > * All rights reserved.< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > * This source code is licensed under the CC-by-NC license found in the< / span > < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "comment" > * LICENSE file in the root directory of this source tree.< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "comment" > // Copyright 2004-present Facebook. All Rights Reserved.< / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include " ../../IndexIVFPQ.h" < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include " ../../index_io.h" < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include " ../../utils.h" < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include " ../GpuIndexIVFPQ.h" < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #include " IndexWrapper.h" < / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "preprocessor" > #include " ../test/TestUtils.h" < / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "preprocessor" > #include " ../utils/DeviceTensor.cuh" < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "preprocessor" > #include " ../utils/DeviceUtils.h" < / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "preprocessor" > #include " ../utils/HostTensor.cuh" < / span > < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "preprocessor" > #include " ../utils/Timer.h" < / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "preprocessor" > #include < gflags/gflags.h> < / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "preprocessor" > #include < memory> < / span > < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "preprocessor" > #include < vector> < / span > < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   DEFINE_int32(k, 10, < span class = "stringliteral" > " final number of closest results returned" < / span > );< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   DEFINE_string(in, < span class = "stringliteral" > " /home/jhj/local/ivfpq_index.out" < / span > , < span class = "stringliteral" > " index file for input" < / span > );< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   DEFINE_bool(use_precomputed, < span class = "keyword" > true< / span > , < span class = "stringliteral" > " enable or disable precomputed codes" < / span > );< / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   DEFINE_bool(float16_lookup, < span class = "keyword" > false< / span > , < span class = "stringliteral" > " use float16 residual distance tables" < / span > );< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   DEFINE_int32(num_gpus, 1, < span class = "stringliteral" > " number of gpus to use" < / span > );< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   DEFINE_int32(index, 2, < span class = "stringliteral" > " 0 = no indices on GPU; 1 = 32 bit, 2 = 64 bit on GPU" < / span > );< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < span class = "keyword" > using namespace < / span > faiss::gpu;< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "keywordtype" > int< / span > main(< span class = "keywordtype" > int< / span > argc, < span class = "keywordtype" > char< / span > ** argv) {< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   google::ParseCommandLineFlags(& argc, & argv, < span class = "keyword" > true< / span > );< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "keyword" > auto< / span > seed = time(< span class = "keyword" > nullptr< / span > );< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < span class = "keyword" > auto< / span > k = FLAGS_k;< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "keyword" > auto< / span > index = std::unique_ptr< faiss::IndexIVFPQ> (< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "keyword" > dynamic_cast< < / span > < a class = "code" href = "structfaiss_1_1IndexIVFPQ.html" > faiss::IndexIVFPQ< / a > *< span class = "keyword" > > < / span > (< a class = "code" href = "namespacefaiss.html#aa46fe38a858ecfde7e0fc0744939d5ad" > faiss::read_index< / a > (FLAGS_in.c_str())));< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   FAISS_ASSERT((< span class = "keywordtype" > bool< / span > ) index);< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "keyword" > auto< / span > dim = index-> d;< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < span class = "keyword" > auto< / span > codes = index-> pq.M;< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "keyword" > auto< / span > bitsPerCode = index-> pq.nbits;< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   printf(< span class = "stringliteral" > " Database: dim %d num vecs %ld\n" < / span > , dim, index-> ntotal);< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   printf(< span class = "stringliteral" > " Coarse centroids: %ld\n" < / span > , index-> quantizer-> ntotal);< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   printf(< span class = "stringliteral" > " PQ centroids: codes %ld bits per code %ld\n" < / span > , codes, bitsPerCode);< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   printf(< span class = "stringliteral" > " L2 lookup: total k %d, precomputed codes %d\n\n" < / span > ,< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   k, FLAGS_use_precomputed);< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "comment" > // Convert to GPU index< / span > < / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   printf(< span class = "stringliteral" > " Copying index to %d GPU(s)...\n" < / span > , FLAGS_num_gpus);< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "keywordtype" > bool< / span > precomp = FLAGS_use_precomputed;< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keyword" > auto< / span > indicesOpt = (faiss::gpu::IndicesOptions) FLAGS_index;< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keyword" > auto< / span > useFloat16Lookup = FLAGS_float16_lookup;< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keyword" > auto< / span > initFn = [precomp, indicesOpt, useFloat16Lookup, & index]< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   (< a class = "code" href = "classfaiss_1_1gpu_1_1GpuResources.html" > faiss::gpu::GpuResources< / a > * res, < span class = "keywordtype" > int< / span > dev) -> < / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   std::unique_ptr< faiss::gpu::GpuIndexIVFPQ> {< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "keyword" > auto< / span > p = std::unique_ptr< faiss::gpu::GpuIndexIVFPQ> (< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "keyword" > new< / span > < a class = "code" href = "classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html" > faiss::gpu::GpuIndexIVFPQ< / a > (res,< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   dev,< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   indicesOpt,< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   useFloat16Lookup,< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   index.get()));< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   p-> setPrecomputedCodes(precomp);< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < span class = "keywordflow" > return< / span > p;< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   };< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   < / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   < a class = "code" href = "structfaiss_1_1gpu_1_1IndexWrapper.html" > IndexWrapper< faiss::gpu::GpuIndexIVFPQ> < / a > gpuIndex(FLAGS_num_gpus, initFn);< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   printf(< span class = "stringliteral" > " copy done\n" < / span > );< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "keyword" > auto< / span > querySizes = std::vector< int> {1, 4, 16, 64, 256, 1024, 4096, 16384};< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "keyword" > auto< / span > nprobeSizes = std::vector< int> {1, 4, 8, 16, 32, 64, 128, 256};< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1HostTensor.html" > HostTensor< float, 2, true> < / a > cpuTimePerVector(< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   {(int) querySizes.size(), (int) nprobeSizes.size()});< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1HostTensor.html" > HostTensor< float, 2, true> < / a > gpuTimePerVector(< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   {(int) querySizes.size(), (int) nprobeSizes.size()});< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   printf(< span class = "stringliteral" > " GPU relative speedup over CPU (x):\n" < / span > );< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > q = 0; q < querySizes.size(); ++q) {< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "keyword" > auto< / span > numQueries = querySizes[q];< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "keywordtype" > bool< / span > first = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > p = 0; p < nprobeSizes.size(); ++p) {< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "keyword" > auto< / span > nprobe = nprobeSizes[q];< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1HostTensor.html" > HostTensor< float, 2, true> < / a > cpuQuery{numQueries, dim};< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   faiss::float_rand(cpuQuery.data(), cpuQuery.numElements(), seed);< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1HostTensor.html" > HostTensor< faiss::Index::idx_t, 2, true> < / a > resultIndices{numQueries, k};< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1HostTensor.html" > HostTensor< float, 2, true> < / a > resultDistances{numQueries, k};< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   index-> nprobe = nprobe;< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "keywordtype" > float< / span > cpuTime = 0.0f;< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   {< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1CpuTimer.html" > CpuTimer< / a > timer;< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "keywordflow" > if< / span > (!FLAGS_use_precomputed) {< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   index-> use_precomputed_table = 0;< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   }< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   index-> search(numQueries, cpuQuery.data(),< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   k, resultDistances.data(), resultIndices.data());< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   cpuTime = timer.< a class = "code" href = "classfaiss_1_1gpu_1_1CpuTimer.html#a4a2795debf10bc7eb904d62356e41f0d" > elapsedMilliseconds< / a > ();< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   cpuTimePerVector[q][p] = cpuTime / (float) numQueries;< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   }< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   gpuIndex.setNumProbes(nprobe);< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1HostTensor.html" > HostTensor< float, 2, true> < / a > < / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   gpuHostDistances({numQueries, k});< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1HostTensor.html" > HostTensor< faiss::Index::idx_t, 2, true> < / a > < / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   gpuHostIndices({numQueries, k});< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1DeviceTensor.html" > DeviceTensor< float, 2, true> < / a > gpuQuery(cpuQuery, 0);< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1DeviceTensor.html" > DeviceTensor< float, 2, true> < / a > gpuDistances({numQueries, k});< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1DeviceTensor.html" > DeviceTensor< long, 2, true> < / a > gpuIndices({numQueries, k});< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   CUDA_VERIFY(cudaDeviceSynchronize());< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   < span class = "keywordtype" > float< / span > gpuTime = 0.0f;< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   < / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   {< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1CpuTimer.html" > CpuTimer< / a > timer;< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   gpuIndex.getIndex()-> search(cpuQuery.getSize(0),< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   cpuQuery.data(),< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   FLAGS_k,< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   gpuHostDistances.data(),< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   gpuHostIndices.data());< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   CUDA_VERIFY(cudaDeviceSynchronize());< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   gpuTime = timer.< a class = "code" href = "classfaiss_1_1gpu_1_1CpuTimer.html#a4a2795debf10bc7eb904d62356e41f0d" > elapsedMilliseconds< / a > ();< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   }< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   gpuTimePerVector[q][p] = gpuTime / (float) numQueries;< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   < span class = "keywordflow" > if< / span > (!first) {< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   printf(< span class = "stringliteral" > " , " < / span > );< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   }< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   first = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   < / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   printf(< span class = "stringliteral" > " %.2f" < / span > , cpuTime / gpuTime);< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   }< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   }< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   printf(< span class = "stringliteral" > " CPU time per query vector (us):\n" < / span > );< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   < / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > q = 0; q < cpuTimePerVector.getSize(0); ++q) {< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < span class = "keywordtype" > bool< / span > first = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   < / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > p = 0; p < cpuTimePerVector.getSize(1); ++p) {< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   < span class = "keywordflow" > if< / span > (!first) {< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   printf(< span class = "stringliteral" > " , " < / span > );< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   }< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   first = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   printf(< span class = "stringliteral" > " %.1f" < / span > , (< span class = "keywordtype" > float< / span > ) cpuTimePerVector[q][p] * 1000.0f);< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   }< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   < / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   }< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   printf(< span class = "stringliteral" > " GPU time per query vector (us):\n" < / span > );< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   < / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > q = 0; q < gpuTimePerVector.getSize(0); ++q) {< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < span class = "keywordtype" > bool< / span > first = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > p = 0; p < gpuTimePerVector.getSize(1); ++p) {< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   < span class = "keywordflow" > if< / span > (!first) {< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   printf(< span class = "stringliteral" > " , " < / span > );< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   }< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   first = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   printf(< span class = "stringliteral" > " %.1f" < / span > , (< span class = "keywordtype" > float< / span > ) gpuTimePerVector[q][p] * 1000.0f);< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   }< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   printf(< span class = "stringliteral" > " \n" < / span > );< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   }< / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   < span class = "comment" > // printf(" \ncudaMalloc usage %zd\n" ,< / span > < / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < span class = "comment" > // resources.getMemoryManager().getHighWaterCudaMalloc());< / span > < / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   }< / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1CpuTimer_html_a4a2795debf10bc7eb904d62356e41f0d" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1CpuTimer.html#a4a2795debf10bc7eb904d62356e41f0d" > faiss::gpu::CpuTimer::elapsedMilliseconds< / a > < / div > < div class = "ttdeci" > float elapsedMilliseconds()< / div > < div class = "ttdoc" > Returns elapsed time in milliseconds. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Timer_8cpp_source.html#l00053" > Timer.cpp:53< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_aa46fe38a858ecfde7e0fc0744939d5ad" > < div class = "ttname" > < a href = "namespacefaiss.html#aa46fe38a858ecfde7e0fc0744939d5ad" > faiss::read_index< / a > < / div > < div class = "ttdeci" > Index * read_index(FILE *f, bool try_mmap)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "index__io_8cpp_source.html#l00476" > index_io.cpp:476< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1GpuResources_html" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1GpuResources.html" > faiss::gpu::GpuResources< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "GpuResources_8h_source.html#l00024" > GpuResources.h:24< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1CpuTimer_html" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1CpuTimer.html" > faiss::gpu::CpuTimer< / a > < / div > < div class = "ttdoc" > CPU wallclock elapsed timer. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Timer_8h_source.html#l00043" > Timer.h:43< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1IndexIVFPQ_html" > < div class = "ttname" > < a href = "structfaiss_1_1IndexIVFPQ.html" > faiss::IndexIVFPQ< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexIVFPQ_8h_source.html#l00030" > IndexIVFPQ.h:30< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1GpuIndexIVFPQ_html" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1GpuIndexIVFPQ.html" > faiss::gpu::GpuIndexIVFPQ< / a > < / div > < div class = "ttdoc" > IVFPQ index for the GPU. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "GpuIndexIVFPQ_8h_source.html#l00025" > GpuIndexIVFPQ.h:25< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1HostTensor_html" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1HostTensor.html" > faiss::gpu::HostTensor< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "HostTensor_8cuh_source.html#l00023" > HostTensor.cuh:23< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1DeviceTensor_html" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1DeviceTensor.html" > faiss::gpu::DeviceTensor< float, 2, true > < / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1gpu_1_1IndexWrapper_html" > < div class = "ttname" > < a href = "structfaiss_1_1gpu_1_1IndexWrapper.html" > faiss::gpu::IndexWrapper< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "IndexWrapper_8h_source.html#l00026" > IndexWrapper.h:26< / a > < / div > < / div >
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