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< title > Faiss: /data/users/hoss/faiss/gpu/impl/Distance.cu Source File< / title >
2017-02-23 06:26:44 +08:00
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< div class = "title" > Distance.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 >
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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 >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > *< / span > < / div >
< 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 >
< 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 >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > */< / span > < / div >
< 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" > #include " Distance.cuh" < / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include " BroadcastSum.cuh" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "preprocessor" > #include " L2Norm.cuh" < / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include " L2Select.cuh" < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include " ../../FaissAssert.h" < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include " ../../AuxIndexStructures.h" < / span > < / div >
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< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "preprocessor" > #include " ../GpuResources.h" < / span > < / div >
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< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include " ../utils/DeviceDefs.cuh" < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #include " ../utils/DeviceUtils.h" < / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "preprocessor" > #include " ../utils/Limits.cuh" < / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "preprocessor" > #include " ../utils/MatrixMult.cuh" < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "preprocessor" > #include " ../utils/BlockSelectKernel.cuh" < / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "preprocessor" > #include < memory> < / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "preprocessor" > #include < algorithm> < / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "preprocessor" > #include < thrust/fill.h> < / span > < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "preprocessor" > #include < thrust/for_each.h> < / span > < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "preprocessor" > #include < thrust/device_ptr.h> < / span > < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "preprocessor" > #include < thrust/execution_policy.h> < / span > < / 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 >   < span class = "keyword" > namespace < / span > faiss { < span class = "keyword" > namespace < / span > gpu {< / 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 = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T> < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   Tensor< T, 2, true> sliceCentroids(Tensor< T, 2, true> & centroids,< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "keywordtype" > bool< / span > centroidsRowMajor,< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "keywordtype" > int< / span > startCentroid,< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "keywordtype" > int< / span > num) {< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "comment" > // Row major is (num, dim)< / span > < / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "comment" > // Col major is (dim, num)< / span > < / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < span class = "keywordflow" > if< / span > (startCentroid == 0 & & < / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   num == centroids.getSize(centroidsRowMajor ? 0 : 1)) {< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "keywordflow" > return< / span > centroids;< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   }< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < span class = "keywordflow" > return< / span > centroids.narrow(centroidsRowMajor ? 0 : 1, startCentroid, num);< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   }< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "comment" > // For each chunk of k indices, increment the index by chunk * increment< / span > < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T> < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   __global__ < span class = "keywordtype" > void< / span > incrementIndex(Tensor< T, 2, true> indices,< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "keywordtype" > int< / span > increment) {< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = threadIdx.x; i < k; i += blockDim.x) {< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   indices[blockIdx.y][blockIdx.x * k + i] += blockIdx.x * increment;< / 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 >   }< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "comment" > // Used to update result indices in distance computation where the number of< / span > < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "comment" > // centroids is high, and is tiled< / span > < / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T> < / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keywordtype" > void< / span > runIncrementIndex(Tensor< T, 2, true> & indices,< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keywordtype" > int< / span > increment,< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   cudaStream_t stream) {< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   dim3 grid(indices.getSize(1) / k, indices.getSize(0));< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "keywordtype" > int< / span > block = std::min(k, 512);< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < span class = "comment" > // should be exact< / span > < / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   FAISS_ASSERT(grid.x * k == indices.getSize(1));< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   incrementIndex< < < grid, block, 0, stream> > > (indices, k, increment);< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   cudaDeviceSynchronize();< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   }< / 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 >   < span class = "comment" > // If the inner size (dim) of the vectors is small, we want a larger query tile< / span > < / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   < span class = "comment" > // size, like 1024< / span > < / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < span class = "keywordtype" > void< / span > chooseTileSize(< span class = "keywordtype" > int< / span > numQueries,< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "keywordtype" > int< / span > numCentroids,< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "keywordtype" > int< / span > dim,< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "keywordtype" > int< / span > elementSize,< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < span class = "keywordtype" > size_t< / span > tempMemAvailable,< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < span class = "keywordtype" > int< / span > & tileRows,< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < span class = "keywordtype" > int< / span > & tileCols) {< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < span class = "comment" > // The matrix multiplication should be large enough to be efficient, but if it< / span > < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < span class = "comment" > // is too large, we seem to lose efficiency as opposed to double-streaming.< / span > < / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "comment" > // Each tile size here defines 1/2 of the memory use due to double streaming.< / span > < / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "comment" > // We ignore available temporary memory, as that is adjusted independently by< / span > < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "comment" > // the user and can thus meet these requirements (or not).< / span > < / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "comment" > // For < = 4 GB GPUs, prefer 512 MB of usage.< / span > < / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "comment" > // For < = 8 GB GPUs, prefer 768 MB of usage.< / span > < / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "comment" > // Otherwise, prefer 1 GB of usage.< / span > < / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "keyword" > auto< / span > totalMem = getCurrentDeviceProperties().totalGlobalMem;< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keywordtype" > int< / span > targetUsage = 0;< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "keywordflow" > if< / span > (totalMem < = ((< span class = "keywordtype" > size_t< / span > ) 4) * 1024 * 1024 * 1024) {< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   targetUsage = 512 * 1024 * 1024;< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (totalMem < = ((< span class = "keywordtype" > size_t< / span > ) 8) * 1024 * 1024 * 1024) {< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   targetUsage = 768 * 1024 * 1024;< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   targetUsage = 1024 * 1024 * 1024;< / 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 >   < / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   targetUsage /= 2 * elementSize;< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "comment" > // 512 seems to be a batch size sweetspot for float32.< / span > < / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "comment" > // If we are on float16, increase to 512.< / span > < / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < span class = "comment" > // If the k size (vec dim) of the matrix multiplication is small (< = 32),< / span > < / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < span class = "comment" > // increase to 1024.< / span > < / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "keywordtype" > int< / span > preferredTileRows = 512;< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "keywordflow" > if< / span > (dim < = 32) {< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   preferredTileRows = 1024;< / 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 >   tileRows = std::min(preferredTileRows, numQueries);< / 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 >   < span class = "comment" > // tileCols is the remainder size< / span > < / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   tileCols = std::min(targetUsage / preferredTileRows, numCentroids);< / div >
< 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 >   }< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T> < / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < span class = "keywordtype" > void< / span > runDistance(< span class = "keywordtype" > bool< / span > computeL2,< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   GpuResources* resources,< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   Tensor< T, 2, true> & centroids,< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   < span class = "keywordtype" > bool< / span > centroidsRowMajor,< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   Tensor< T, 1, true> * centroidNorms,< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   Tensor< T, 2, true> & queries,< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < span class = "keywordtype" > bool< / span > queriesRowMajor,< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   Tensor< T, 2, true> & outDistances,< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   Tensor< int, 2, true> & outIndices,< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "keywordtype" > bool< / span > useHgemm,< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "keywordtype" > bool< / span > ignoreOutDistances) {< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "comment" > // The # of centroids in `centroids` based on memory layout< / span > < / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < span class = "keyword" > auto< / span > numCentroids = centroids.getSize(centroidsRowMajor ? 0 : 1);< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "comment" > // The # of queries in `queries` based on memory layout< / span > < / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < span class = "keyword" > auto< / span > numQueries = queries.getSize(queriesRowMajor ? 0 : 1);< / 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 >   < span class = "comment" > // The dimensions of the vectors to consider< / span > < / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < span class = "keyword" > auto< / span > dim = queries.getSize(queriesRowMajor ? 1 : 0);< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   FAISS_ASSERT((numQueries == 0 || numCentroids == 0) ||< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   dim == centroids.getSize(centroidsRowMajor ? 1 : 0));< / 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 >   FAISS_ASSERT(outDistances.getSize(0) == numQueries);< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   FAISS_ASSERT(outIndices.getSize(0) == numQueries);< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   FAISS_ASSERT(outDistances.getSize(1) == k);< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   FAISS_ASSERT(outIndices.getSize(1) == k);< / 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 >   < span class = "keyword" > auto< / span > & mem = resources-> getMemoryManagerCurrentDevice();< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keyword" > auto< / span > defaultStream = resources-> getDefaultStreamCurrentDevice();< / 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 >   < span class = "comment" > // If we' re quering against a 0 sized set, just return empty results< / span > < / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < span class = "keywordflow" > if< / span > (centroids.numElements() == 0) {< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   thrust::fill(thrust::cuda::par.on(defaultStream),< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   outDistances.data(), outDistances.end(),< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   Limits< T> ::getMax());< / 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 >   thrust::fill(thrust::cuda::par.on(defaultStream),< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   outIndices.data(), outIndices.end(),< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   -1);< / 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 >   < span class = "keywordflow" > return< / 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 >   < / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   < span class = "comment" > // L2: If ||c||^2 is not pre-computed, calculate it< / span > < / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   DeviceTensor< T, 1, true> cNorms;< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   < span class = "keywordflow" > if< / span > (computeL2 & & !centroidNorms) {< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   cNorms =< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   std::move(DeviceTensor< T, 1, true> (mem,< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   {numCentroids}, defaultStream));< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   runL2Norm(centroids, centroidsRowMajor, cNorms, < span class = "keyword" > true< / span > , defaultStream);< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   centroidNorms = & cNorms;< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   }< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "comment" > // Prepare norm vector ||q||^2; ||c||^2 is already pre-computed< / span > < / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < span class = "keywordtype" > int< / span > qNormSize[1] = {numQueries};< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   DeviceTensor< T, 1, true> queryNorms(mem, qNormSize, defaultStream);< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   < / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < span class = "comment" > // ||q||^2< / span > < / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "keywordflow" > if< / span > (computeL2) {< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   runL2Norm(queries, queriesRowMajor, queryNorms, < span class = "keyword" > true< / span > , defaultStream);< / 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 >   < / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < span class = "comment" > // By default, aim to use up to 512 MB of memory for the processing, with both< / span > < / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < span class = "comment" > // number of queries and number of centroids being at least 512.< / span > < / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   < span class = "keywordtype" > int< / span > tileRows = 0;< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < span class = "keywordtype" > int< / span > tileCols = 0;< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   chooseTileSize(numQueries,< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   numCentroids,< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   dim,< / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   < span class = "keyword" > sizeof< / span > (T),< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   mem.getSizeAvailable(),< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   tileRows,< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   tileCols);< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   < span class = "keywordtype" > int< / span > numColTiles = utils::divUp(numCentroids, tileCols);< / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   < / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   < span class = "comment" > // We can have any number of vectors to query against, even less than k, in< / span > < / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   < span class = "comment" > // which case we' ll return -1 for the index< / span > < / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   FAISS_ASSERT(k < = GPU_MAX_SELECTION_K); < span class = "comment" > // select limitation< / span > < / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   < / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   < span class = "comment" > // Temporary output memory space we' ll use< / span > < / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   DeviceTensor< T, 2, true> distanceBuf1(< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   mem, {tileRows, tileCols}, defaultStream);< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   DeviceTensor< T, 2, true> distanceBuf2(< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   mem, {tileRows, tileCols}, defaultStream);< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   DeviceTensor< T, 2, true> * distanceBufs[2] =< / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   {& distanceBuf1, & distanceBuf2};< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   DeviceTensor< T, 2, true> outDistanceBuf1(< / div >
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< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   mem, {tileRows, numColTiles * k}, defaultStream);< / div >
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< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   DeviceTensor< T, 2, true> outDistanceBuf2(< / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   mem, {tileRows, numColTiles * k}, defaultStream);< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   DeviceTensor< T, 2, true> * outDistanceBufs[2] =< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   {& outDistanceBuf1, & outDistanceBuf2};< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   < / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   DeviceTensor< int, 2, true> outIndexBuf1(< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   mem, {tileRows, numColTiles * k}, defaultStream);< / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   DeviceTensor< int, 2, true> outIndexBuf2(< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   mem, {tileRows, numColTiles * k}, defaultStream);< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   DeviceTensor< int, 2, true> * outIndexBufs[2] =< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   {& outIndexBuf1, & outIndexBuf2};< / div >
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< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < / div >
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< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   < span class = "keyword" > auto< / span > streams = resources-> getAlternateStreamsCurrentDevice();< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   streamWait(streams, {defaultStream});< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   < / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   < span class = "keywordtype" > int< / span > curStream = 0;< / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   < span class = "keywordtype" > bool< / span > interrupt = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   < / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   < span class = "comment" > // Tile over the input queries< / span > < / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < numQueries; i += tileRows) {< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   < span class = "keywordflow" > if< / span > (interrupt || < a class = "code" href = "structfaiss_1_1InterruptCallback.html#adb241fbde51ecd1003cefb8295cd1e0d" > InterruptCallback::is_interrupted< / a > ()) {< / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   interrupt = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   }< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   < / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   < span class = "keywordtype" > int< / span > curQuerySize = std::min(tileRows, numQueries - i);< / div >
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< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   < / div >
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< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   < span class = "keyword" > auto< / span > outDistanceView =< / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   outDistances.narrow(0, i, curQuerySize);< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   < span class = "keyword" > auto< / span > outIndexView =< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   outIndices.narrow(0, i, curQuerySize);< / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   < / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   < span class = "keyword" > auto< / span > queryView =< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   queries.narrow(queriesRowMajor ? 0 : 1, i, curQuerySize);< / div >
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   < span class = "keyword" > auto< / span > queryNormNiew =< / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   queryNorms.narrow(0, i, curQuerySize);< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   < / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   < span class = "keyword" > auto< / span > outDistanceBufRowView =< / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   outDistanceBufs[curStream]-> narrow(0, 0, curQuerySize);< / div >
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   < span class = "keyword" > auto< / span > outIndexBufRowView =< / div >
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   outIndexBufs[curStream]-> narrow(0, 0, curQuerySize);< / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   < / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   < span class = "comment" > // Tile over the centroids< / span > < / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < numCentroids; j += tileCols) {< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   < span class = "keywordflow" > if< / span > (< a class = "code" href = "structfaiss_1_1InterruptCallback.html#adb241fbde51ecd1003cefb8295cd1e0d" > InterruptCallback::is_interrupted< / a > ()) {< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   interrupt = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   }< / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   < / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   < span class = "keywordtype" > int< / span > curCentroidSize = std::min(tileCols, numCentroids - j);< / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   < span class = "keywordtype" > int< / span > curColTile = j / tileCols;< / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   < / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   < span class = "keyword" > auto< / span > centroidsView =< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   sliceCentroids(centroids, centroidsRowMajor, j, curCentroidSize);< / div >
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< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   < / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   < span class = "keyword" > auto< / span > distanceBufView = distanceBufs[curStream]-> < / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   narrow(0, 0, curQuerySize).narrow(1, 0, curCentroidSize);< / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   < / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   < span class = "keyword" > auto< / span > outDistanceBufColView =< / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   outDistanceBufRowView.narrow(1, k * curColTile, k);< / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < span class = "keyword" > auto< / span > outIndexBufColView =< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   outIndexBufRowView.narrow(1, k * curColTile, k);< / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   < / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   < span class = "comment" > // L2: distance is ||c||^2 - 2qc + ||q||^2, we compute -2qc< / span > < / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   < span class = "comment" > // IP: just compute qc< / span > < / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < span class = "comment" > // (query id x dim) x (centroid id, dim)' = (query id, centroid id)< / span > < / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   runMatrixMult(distanceBufView,< / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   < span class = "keyword" > false< / span > , < span class = "comment" > // not transposed< / span > < / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   queryView,< / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   !queriesRowMajor, < span class = "comment" > // transposed MM if col major< / span > < / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   centroidsView,< / div >
< div class = "line" > < a name = "l00290" > < / a > < span class = "lineno" > 290< / span >   centroidsRowMajor, < span class = "comment" > // transposed MM if row major< / span > < / div >
< div class = "line" > < a name = "l00291" > < / a > < span class = "lineno" > 291< / span >   computeL2 ? -2.0f : 1.0f,< / div >
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > 292< / span >   0.0f,< / div >
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > 293< / span >   useHgemm,< / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   resources-> getBlasHandleCurrentDevice(),< / div >
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   streams[curStream]);< / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   < / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   < span class = "keywordflow" > if< / span > (computeL2) {< / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   < span class = "comment" > // For L2 distance, we use this fused kernel that performs both< / span > < / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   < span class = "comment" > // adding ||c||^2 to -2qc and k-selection, so we only need two< / span > < / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   < span class = "comment" > // passes (one write by the gemm, one read here) over the huge< / span > < / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   < span class = "comment" > // region of output memory< / span > < / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   < span class = "comment" > // If we aren' t tiling along the number of centroids, we can perform the< / span > < / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   < span class = "comment" > // output work directly< / span > < / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   < span class = "keywordflow" > if< / span > (tileCols == numCentroids) {< / div >
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   < span class = "comment" > // Write into the final output< / span > < / div >
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > 307< / span >   runL2SelectMin(distanceBufView,< / div >
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   *centroidNorms,< / div >
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   outDistanceView,< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   outIndexView,< / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   k,< / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   streams[curStream]);< / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   < / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   < span class = "keywordflow" > if< / span > (!ignoreOutDistances) {< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   < span class = "comment" > // expand (query id) to (query id, k) by duplicating along rows< / span > < / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   < span class = "comment" > // top-k ||c||^2 - 2qc + ||q||^2 in the form (query id, k)< / span > < / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   runSumAlongRows(queryNormNiew,< / div >
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   outDistanceView,< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   < span class = "keyword" > true< / span > , < span class = "comment" > // L2 distances should not go below zero due< / span > < / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   < span class = "comment" > // to roundoff error< / span > < / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   streams[curStream]);< / div >
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   }< / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   < span class = "keyword" > auto< / span > centroidNormsView = centroidNorms-> narrow(0, j, curCentroidSize);< / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   < / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   < span class = "comment" > // Write into our intermediate output< / span > < / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / span >   runL2SelectMin(distanceBufView,< / div >
< div class = "line" > < a name = "l00328" > < / a > < span class = "lineno" > 328< / span >   centroidNormsView,< / div >
< div class = "line" > < a name = "l00329" > < / a > < span class = "lineno" > 329< / span >   outDistanceBufColView,< / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   outIndexBufColView,< / div >
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   k,< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   streams[curStream]);< / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   < / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   < span class = "keywordflow" > if< / span > (!ignoreOutDistances) {< / div >
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   < span class = "comment" > // expand (query id) to (query id, k) by duplicating along rows< / span > < / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   < span class = "comment" > // top-k ||c||^2 - 2qc + ||q||^2 in the form (query id, k)< / span > < / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   runSumAlongRows(queryNormNiew,< / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > 338< / span >   outDistanceBufColView,< / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   < span class = "keyword" > true< / span > , < span class = "comment" > // L2 distances should not go below zero due< / span > < / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   < span class = "comment" > // to roundoff error< / span > < / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   streams[curStream]);< / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   }< / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   }< / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   < span class = "comment" > // For IP, just k-select the output for this tile< / span > < / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   < span class = "keywordflow" > if< / span > (tileCols == numCentroids) {< / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   < span class = "comment" > // Write into the final output< / span > < / div >
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   runBlockSelect(distanceBufView,< / div >
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< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   outDistanceView,< / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   outIndexView,< / div >
2019-05-28 22:17:22 +08:00
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   < span class = "keyword" > true< / span > , k, streams[curStream]);< / div >
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > 352< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > 353< / span >   < span class = "comment" > // Write into the intermediate output< / span > < / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   runBlockSelect(distanceBufView,< / div >
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   outDistanceBufColView,< / div >
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   outIndexBufColView,< / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   < span class = "keyword" > true< / span > , k, streams[curStream]);< / div >
< div class = "line" > < a name = "l00358" > < / a > < span class = "lineno" > 358< / span >   }< / div >
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   }< / div >
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > 360< / span >   }< / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   < / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   < span class = "comment" > // As we' re finished with processing a full set of centroids, perform the< / span > < / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / span >   < span class = "comment" > // final k-selection< / span > < / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   < span class = "keywordflow" > if< / span > (tileCols != numCentroids) {< / div >
< div class = "line" > < a name = "l00365" > < / a > < span class = "lineno" > 365< / span >   < span class = "comment" > // The indices are tile-relative; for each tile of k, we need to add< / span > < / div >
< div class = "line" > < a name = "l00366" > < / a > < span class = "lineno" > 366< / span >   < span class = "comment" > // tileCols to the index< / span > < / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   runIncrementIndex(outIndexBufRowView, k, tileCols, streams[curStream]);< / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   < / div >
< div class = "line" > < a name = "l00369" > < / a > < span class = "lineno" > 369< / span >   runBlockSelectPair(outDistanceBufRowView,< / div >
< div class = "line" > < a name = "l00370" > < / a > < span class = "lineno" > 370< / span >   outIndexBufRowView,< / div >
< div class = "line" > < a name = "l00371" > < / a > < span class = "lineno" > 371< / span >   outDistanceView,< / div >
< div class = "line" > < a name = "l00372" > < / a > < span class = "lineno" > 372< / span >   outIndexView,< / div >
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > 373< / span >   computeL2 ? < span class = "keyword" > false< / span > : < span class = "keyword" > true< / span > , k, streams[curStream]);< / div >
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / span >   }< / div >
< div class = "line" > < a name = "l00375" > < / a > < span class = "lineno" > 375< / span >   < / div >
< div class = "line" > < a name = "l00376" > < / a > < span class = "lineno" > 376< / span >   curStream = (curStream + 1) % 2;< / div >
< div class = "line" > < a name = "l00377" > < / a > < span class = "lineno" > 377< / span >   }< / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   < / div >
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > 379< / span >   < span class = "comment" > // Have the desired ordering stream wait on the multi-stream< / span > < / div >
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   streamWait({defaultStream}, streams);< / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > 381< / span >   < / div >
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   < span class = "keywordflow" > if< / span > (interrupt) {< / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   FAISS_THROW_MSG(< span class = "stringliteral" > " interrupted" < / span > );< / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   }< / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   }< / div >
< div class = "line" > < a name = "l00386" > < / a > < span class = "lineno" > 386< / span >   < / div >
< div class = "line" > < a name = "l00387" > < / a > < span class = "lineno" > 387< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T> < / div >
< div class = "line" > < a name = "l00388" > < / a > < span class = "lineno" > 388< / span >   < span class = "keywordtype" > void< / span > runL2Distance(GpuResources* resources,< / div >
< div class = "line" > < a name = "l00389" > < / a > < span class = "lineno" > 389< / span >   Tensor< T, 2, true> & centroids,< / div >
< div class = "line" > < a name = "l00390" > < / a > < span class = "lineno" > 390< / span >   < span class = "keywordtype" > bool< / span > centroidsRowMajor,< / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > 391< / span >   Tensor< T, 1, true> * centroidNorms,< / div >
< div class = "line" > < a name = "l00392" > < / a > < span class = "lineno" > 392< / span >   Tensor< T, 2, true> & queries,< / div >
< div class = "line" > < a name = "l00393" > < / a > < span class = "lineno" > 393< / span >   < span class = "keywordtype" > bool< / span > queriesRowMajor,< / div >
< div class = "line" > < a name = "l00394" > < / a > < span class = "lineno" > 394< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00395" > < / a > < span class = "lineno" > 395< / span >   Tensor< T, 2, true> & outDistances,< / div >
< div class = "line" > < a name = "l00396" > < / a > < span class = "lineno" > 396< / span >   Tensor< int, 2, true> & outIndices,< / div >
< div class = "line" > < a name = "l00397" > < / a > < span class = "lineno" > 397< / span >   < span class = "keywordtype" > bool< / span > useHgemm,< / div >
< div class = "line" > < a name = "l00398" > < / a > < span class = "lineno" > 398< / span >   < span class = "keywordtype" > bool< / span > ignoreOutDistances = < span class = "keyword" > false< / span > ) {< / div >
< div class = "line" > < a name = "l00399" > < / a > < span class = "lineno" > 399< / span >   runDistance< T> (< span class = "keyword" > true< / span > , < span class = "comment" > // L2< / span > < / div >
< div class = "line" > < a name = "l00400" > < / a > < span class = "lineno" > 400< / span >   resources,< / div >
< div class = "line" > < a name = "l00401" > < / a > < span class = "lineno" > 401< / span >   centroids,< / div >
< div class = "line" > < a name = "l00402" > < / a > < span class = "lineno" > 402< / span >   centroidsRowMajor,< / div >
< div class = "line" > < a name = "l00403" > < / a > < span class = "lineno" > 403< / span >   centroidNorms,< / div >
< div class = "line" > < a name = "l00404" > < / a > < span class = "lineno" > 404< / span >   queries,< / div >
< div class = "line" > < a name = "l00405" > < / a > < span class = "lineno" > 405< / span >   queriesRowMajor,< / div >
< div class = "line" > < a name = "l00406" > < / a > < span class = "lineno" > 406< / span >   k,< / div >
< div class = "line" > < a name = "l00407" > < / a > < span class = "lineno" > 407< / span >   outDistances,< / div >
< div class = "line" > < a name = "l00408" > < / a > < span class = "lineno" > 408< / span >   outIndices,< / div >
< div class = "line" > < a name = "l00409" > < / a > < span class = "lineno" > 409< / span >   useHgemm,< / div >
< div class = "line" > < a name = "l00410" > < / a > < span class = "lineno" > 410< / span >   ignoreOutDistances);< / div >
< div class = "line" > < a name = "l00411" > < / a > < span class = "lineno" > 411< / span >   }< / div >
< div class = "line" > < a name = "l00412" > < / a > < span class = "lineno" > 412< / span >   < / div >
< div class = "line" > < a name = "l00413" > < / a > < span class = "lineno" > 413< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T> < / div >
< div class = "line" > < a name = "l00414" > < / a > < span class = "lineno" > 414< / span >   < span class = "keywordtype" > void< / span > runIPDistance(GpuResources* resources,< / div >
< div class = "line" > < a name = "l00415" > < / a > < span class = "lineno" > 415< / span >   Tensor< T, 2, true> & centroids,< / div >
< div class = "line" > < a name = "l00416" > < / a > < span class = "lineno" > 416< / span >   < span class = "keywordtype" > bool< / span > centroidsRowMajor,< / div >
< div class = "line" > < a name = "l00417" > < / a > < span class = "lineno" > 417< / span >   Tensor< T, 2, true> & queries,< / div >
< div class = "line" > < a name = "l00418" > < / a > < span class = "lineno" > 418< / span >   < span class = "keywordtype" > bool< / span > queriesRowMajor,< / div >
< div class = "line" > < a name = "l00419" > < / a > < span class = "lineno" > 419< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00420" > < / a > < span class = "lineno" > 420< / span >   Tensor< T, 2, true> & outDistances,< / div >
< div class = "line" > < a name = "l00421" > < / a > < span class = "lineno" > 421< / span >   Tensor< int, 2, true> & outIndices,< / div >
< div class = "line" > < a name = "l00422" > < / a > < span class = "lineno" > 422< / span >   < span class = "keywordtype" > bool< / span > useHgemm) {< / div >
< div class = "line" > < a name = "l00423" > < / a > < span class = "lineno" > 423< / span >   runDistance< T> (< span class = "keyword" > false< / span > , < span class = "comment" > // IP< / span > < / div >
< div class = "line" > < a name = "l00424" > < / a > < span class = "lineno" > 424< / span >   resources,< / div >
< div class = "line" > < a name = "l00425" > < / a > < span class = "lineno" > 425< / span >   centroids,< / div >
< div class = "line" > < a name = "l00426" > < / a > < span class = "lineno" > 426< / span >   centroidsRowMajor,< / div >
< div class = "line" > < a name = "l00427" > < / a > < span class = "lineno" > 427< / span >   < span class = "keyword" > nullptr< / span > , < span class = "comment" > // no centroid norms provided< / span > < / div >
< div class = "line" > < a name = "l00428" > < / a > < span class = "lineno" > 428< / span >   queries,< / div >
< div class = "line" > < a name = "l00429" > < / a > < span class = "lineno" > 429< / span >   queriesRowMajor,< / div >
< div class = "line" > < a name = "l00430" > < / a > < span class = "lineno" > 430< / span >   k,< / div >
< div class = "line" > < a name = "l00431" > < / a > < span class = "lineno" > 431< / span >   outDistances,< / div >
< div class = "line" > < a name = "l00432" > < / a > < span class = "lineno" > 432< / span >   outIndices,< / div >
< div class = "line" > < a name = "l00433" > < / a > < span class = "lineno" > 433< / span >   useHgemm,< / div >
< div class = "line" > < a name = "l00434" > < / a > < span class = "lineno" > 434< / span >   < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l00435" > < / a > < span class = "lineno" > 435< / span >   }< / div >
< div class = "line" > < a name = "l00436" > < / a > < span class = "lineno" > 436< / span >   < / div >
< div class = "line" > < a name = "l00437" > < / a > < span class = "lineno" > 437< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00438" > < / a > < span class = "lineno" > 438< / span >   < span class = "comment" > // Instantiations of the distance templates< / span > < / div >
< div class = "line" > < a name = "l00439" > < / a > < span class = "lineno" > 439< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00440" > < / a > < span class = "lineno" > 440< / span >   < / div >
< div class = "line" > < a name = "l00441" > < / a > < span class = "lineno" > 441< / span >   < span class = "keywordtype" > void< / span > < / div >
< div class = "line" > < a name = "l00442" > < / a > < span class = "lineno" > 442< / span >   runIPDistance(GpuResources* resources,< / div >
< div class = "line" > < a name = "l00443" > < / a > < span class = "lineno" > 443< / span >   Tensor< float, 2, true> & vectors,< / div >
< div class = "line" > < a name = "l00444" > < / a > < span class = "lineno" > 444< / span >   < span class = "keywordtype" > bool< / span > vectorsRowMajor,< / div >
< div class = "line" > < a name = "l00445" > < / a > < span class = "lineno" > 445< / span >   Tensor< float, 2, true> & queries,< / div >
< div class = "line" > < a name = "l00446" > < / a > < span class = "lineno" > 446< / span >   < span class = "keywordtype" > bool< / span > queriesRowMajor,< / div >
< div class = "line" > < a name = "l00447" > < / a > < span class = "lineno" > 447< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00448" > < / a > < span class = "lineno" > 448< / span >   Tensor< float, 2, true> & outDistances,< / div >
< div class = "line" > < a name = "l00449" > < / a > < span class = "lineno" > 449< / span >   Tensor< int, 2, true> & outIndices) {< / div >
< div class = "line" > < a name = "l00450" > < / a > < span class = "lineno" > 450< / span >   runIPDistance< float> (resources,< / div >
< div class = "line" > < a name = "l00451" > < / a > < span class = "lineno" > 451< / span >   vectors,< / div >
< div class = "line" > < a name = "l00452" > < / a > < span class = "lineno" > 452< / span >   vectorsRowMajor,< / div >
< div class = "line" > < a name = "l00453" > < / a > < span class = "lineno" > 453< / span >   queries,< / div >
< div class = "line" > < a name = "l00454" > < / a > < span class = "lineno" > 454< / span >   queriesRowMajor,< / div >
< div class = "line" > < a name = "l00455" > < / a > < span class = "lineno" > 455< / span >   k,< / div >
< div class = "line" > < a name = "l00456" > < / a > < span class = "lineno" > 456< / span >   outDistances,< / div >
< div class = "line" > < a name = "l00457" > < / a > < span class = "lineno" > 457< / span >   outIndices,< / div >
< div class = "line" > < a name = "l00458" > < / a > < span class = "lineno" > 458< / span >   < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l00459" > < / a > < span class = "lineno" > 459< / span >   }< / div >
< div class = "line" > < a name = "l00460" > < / a > < span class = "lineno" > 460< / span >   < / div >
< div class = "line" > < a name = "l00461" > < / a > < span class = "lineno" > 461< / span >   < span class = "preprocessor" > #ifdef FAISS_USE_FLOAT16< / span > < / div >
< div class = "line" > < a name = "l00462" > < / a > < span class = "lineno" > 462< / span >   < span class = "preprocessor" > < / span > < span class = "keywordtype" > void< / span > < / div >
< div class = "line" > < a name = "l00463" > < / a > < span class = "lineno" > 463< / span >   runIPDistance(GpuResources* resources,< / div >
< div class = "line" > < a name = "l00464" > < / a > < span class = "lineno" > 464< / span >   Tensor< half, 2, true> & vectors,< / div >
< div class = "line" > < a name = "l00465" > < / a > < span class = "lineno" > 465< / span >   < span class = "keywordtype" > bool< / span > vectorsRowMajor,< / div >
< div class = "line" > < a name = "l00466" > < / a > < span class = "lineno" > 466< / span >   Tensor< half, 2, true> & queries,< / div >
< div class = "line" > < a name = "l00467" > < / a > < span class = "lineno" > 467< / span >   < span class = "keywordtype" > bool< / span > queriesRowMajor,< / div >
< div class = "line" > < a name = "l00468" > < / a > < span class = "lineno" > 468< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00469" > < / a > < span class = "lineno" > 469< / span >   Tensor< half, 2, true> & outDistances,< / div >
< div class = "line" > < a name = "l00470" > < / a > < span class = "lineno" > 470< / span >   Tensor< int, 2, true> & outIndices,< / div >
< div class = "line" > < a name = "l00471" > < / a > < span class = "lineno" > 471< / span >   < span class = "keywordtype" > bool< / span > useHgemm) {< / div >
< div class = "line" > < a name = "l00472" > < / a > < span class = "lineno" > 472< / span >   runIPDistance< half> (resources,< / div >
< div class = "line" > < a name = "l00473" > < / a > < span class = "lineno" > 473< / span >   vectors,< / div >
< div class = "line" > < a name = "l00474" > < / a > < span class = "lineno" > 474< / span >   vectorsRowMajor,< / div >
< div class = "line" > < a name = "l00475" > < / a > < span class = "lineno" > 475< / span >   queries,< / div >
< div class = "line" > < a name = "l00476" > < / a > < span class = "lineno" > 476< / span >   queriesRowMajor,< / div >
< div class = "line" > < a name = "l00477" > < / a > < span class = "lineno" > 477< / span >   k,< / div >
< div class = "line" > < a name = "l00478" > < / a > < span class = "lineno" > 478< / span >   outDistances,< / div >
< div class = "line" > < a name = "l00479" > < / a > < span class = "lineno" > 479< / span >   outIndices,< / div >
< div class = "line" > < a name = "l00480" > < / a > < span class = "lineno" > 480< / span >   useHgemm);< / div >
< div class = "line" > < a name = "l00481" > < / a > < span class = "lineno" > 481< / span >   }< / div >
< div class = "line" > < a name = "l00482" > < / a > < span class = "lineno" > 482< / span >   < span class = "preprocessor" > #endif< / span > < / div >
< div class = "line" > < a name = "l00483" > < / a > < span class = "lineno" > 483< / span >   < span class = "preprocessor" > < / span > < / div >
< div class = "line" > < a name = "l00484" > < / a > < span class = "lineno" > 484< / span >   < span class = "keywordtype" > void< / span > < / div >
< div class = "line" > < a name = "l00485" > < / a > < span class = "lineno" > 485< / span >   runL2Distance(GpuResources* resources,< / div >
< div class = "line" > < a name = "l00486" > < / a > < span class = "lineno" > 486< / span >   Tensor< float, 2, true> & vectors,< / div >
< div class = "line" > < a name = "l00487" > < / a > < span class = "lineno" > 487< / span >   < span class = "keywordtype" > bool< / span > vectorsRowMajor,< / div >
< div class = "line" > < a name = "l00488" > < / a > < span class = "lineno" > 488< / span >   Tensor< float, 1, true> * vectorNorms,< / div >
< div class = "line" > < a name = "l00489" > < / a > < span class = "lineno" > 489< / span >   Tensor< float, 2, true> & queries,< / div >
< div class = "line" > < a name = "l00490" > < / a > < span class = "lineno" > 490< / span >   < span class = "keywordtype" > bool< / span > queriesRowMajor,< / div >
< div class = "line" > < a name = "l00491" > < / a > < span class = "lineno" > 491< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00492" > < / a > < span class = "lineno" > 492< / span >   Tensor< float, 2, true> & outDistances,< / div >
< div class = "line" > < a name = "l00493" > < / a > < span class = "lineno" > 493< / span >   Tensor< int, 2, true> & outIndices,< / div >
< div class = "line" > < a name = "l00494" > < / a > < span class = "lineno" > 494< / span >   < span class = "keywordtype" > bool< / span > ignoreOutDistances) {< / div >
< div class = "line" > < a name = "l00495" > < / a > < span class = "lineno" > 495< / span >   runL2Distance< float> (resources,< / div >
< div class = "line" > < a name = "l00496" > < / a > < span class = "lineno" > 496< / span >   vectors,< / div >
< div class = "line" > < a name = "l00497" > < / a > < span class = "lineno" > 497< / span >   vectorsRowMajor,< / div >
< div class = "line" > < a name = "l00498" > < / a > < span class = "lineno" > 498< / span >   vectorNorms,< / div >
< div class = "line" > < a name = "l00499" > < / a > < span class = "lineno" > 499< / span >   queries,< / div >
< div class = "line" > < a name = "l00500" > < / a > < span class = "lineno" > 500< / span >   queriesRowMajor,< / div >
< div class = "line" > < a name = "l00501" > < / a > < span class = "lineno" > 501< / span >   k,< / div >
< div class = "line" > < a name = "l00502" > < / a > < span class = "lineno" > 502< / span >   outDistances,< / div >
< div class = "line" > < a name = "l00503" > < / a > < span class = "lineno" > 503< / span >   outIndices,< / div >
< div class = "line" > < a name = "l00504" > < / a > < span class = "lineno" > 504< / span >   < span class = "keyword" > false< / span > ,< / div >
< div class = "line" > < a name = "l00505" > < / a > < span class = "lineno" > 505< / span >   ignoreOutDistances);< / div >
< div class = "line" > < a name = "l00506" > < / a > < span class = "lineno" > 506< / span >   }< / div >
< div class = "line" > < a name = "l00507" > < / a > < span class = "lineno" > 507< / span >   < / div >
< div class = "line" > < a name = "l00508" > < / a > < span class = "lineno" > 508< / span >   < span class = "preprocessor" > #ifdef FAISS_USE_FLOAT16< / span > < / div >
< div class = "line" > < a name = "l00509" > < / a > < span class = "lineno" > 509< / span >   < span class = "preprocessor" > < / span > < span class = "keywordtype" > void< / span > < / div >
< div class = "line" > < a name = "l00510" > < / a > < span class = "lineno" > 510< / span >   runL2Distance(GpuResources* resources,< / div >
< div class = "line" > < a name = "l00511" > < / a > < span class = "lineno" > 511< / span >   Tensor< half, 2, true> & vectors,< / div >
< div class = "line" > < a name = "l00512" > < / a > < span class = "lineno" > 512< / span >   < span class = "keywordtype" > bool< / span > vectorsRowMajor,< / div >
< div class = "line" > < a name = "l00513" > < / a > < span class = "lineno" > 513< / span >   Tensor< half, 1, true> * vectorNorms,< / div >
< div class = "line" > < a name = "l00514" > < / a > < span class = "lineno" > 514< / span >   Tensor< half, 2, true> & queries,< / div >
< div class = "line" > < a name = "l00515" > < / a > < span class = "lineno" > 515< / span >   < span class = "keywordtype" > bool< / span > queriesRowMajor,< / div >
< div class = "line" > < a name = "l00516" > < / a > < span class = "lineno" > 516< / span >   < span class = "keywordtype" > int< / span > k,< / div >
< div class = "line" > < a name = "l00517" > < / a > < span class = "lineno" > 517< / span >   Tensor< half, 2, true> & outDistances,< / div >
< div class = "line" > < a name = "l00518" > < / a > < span class = "lineno" > 518< / span >   Tensor< int, 2, true> & outIndices,< / div >
< div class = "line" > < a name = "l00519" > < / a > < span class = "lineno" > 519< / span >   < span class = "keywordtype" > bool< / span > useHgemm,< / div >
< div class = "line" > < a name = "l00520" > < / a > < span class = "lineno" > 520< / span >   < span class = "keywordtype" > bool< / span > ignoreOutDistances) {< / div >
< div class = "line" > < a name = "l00521" > < / a > < span class = "lineno" > 521< / span >   runL2Distance< half> (resources,< / div >
< div class = "line" > < a name = "l00522" > < / a > < span class = "lineno" > 522< / span >   vectors,< / div >
< div class = "line" > < a name = "l00523" > < / a > < span class = "lineno" > 523< / span >   vectorsRowMajor,< / div >
< div class = "line" > < a name = "l00524" > < / a > < span class = "lineno" > 524< / span >   vectorNorms,< / div >
< div class = "line" > < a name = "l00525" > < / a > < span class = "lineno" > 525< / span >   queries,< / div >
< div class = "line" > < a name = "l00526" > < / a > < span class = "lineno" > 526< / span >   queriesRowMajor,< / div >
< div class = "line" > < a name = "l00527" > < / a > < span class = "lineno" > 527< / span >   k,< / div >
< div class = "line" > < a name = "l00528" > < / a > < span class = "lineno" > 528< / span >   outDistances,< / div >
< div class = "line" > < a name = "l00529" > < / a > < span class = "lineno" > 529< / span >   outIndices,< / div >
< div class = "line" > < a name = "l00530" > < / a > < span class = "lineno" > 530< / span >   useHgemm,< / div >
< div class = "line" > < a name = "l00531" > < / a > < span class = "lineno" > 531< / span >   ignoreOutDistances);< / div >
< div class = "line" > < a name = "l00532" > < / a > < span class = "lineno" > 532< / span >   }< / div >
< div class = "line" > < a name = "l00533" > < / a > < span class = "lineno" > 533< / span >   < span class = "preprocessor" > #endif< / span > < / div >
< div class = "line" > < a name = "l00534" > < / a > < span class = "lineno" > 534< / span >   < span class = "preprocessor" > < / span > < / div >
< div class = "line" > < a name = "l00535" > < / a > < span class = "lineno" > 535< / span >   } } < span class = "comment" > // namespace< / span > < / div >
< div class = "ttc" id = "structfaiss_1_1InterruptCallback_html_adb241fbde51ecd1003cefb8295cd1e0d" > < div class = "ttname" > < a href = "structfaiss_1_1InterruptCallback.html#adb241fbde51ecd1003cefb8295cd1e0d" > faiss::InterruptCallback::is_interrupted< / a > < / div > < div class = "ttdeci" > static bool is_interrupted()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "AuxIndexStructures_8cpp_source.html#l00316" > AuxIndexStructures.cpp:316< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
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