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< title > Faiss: /data/users/matthijs/github_faiss/faiss/gpu/utils/DeviceUtils.h Source File< / title >
2017-02-23 06:26:44 +08:00
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2017-06-21 21:54:28 +08:00
< 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" > * Copyright (c) 2015-present, Facebook, Inc.< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > * All rights reserved.< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / 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 = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > * LICENSE file in the root directory of this source tree.< / span > < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "comment" > // Copyright 2004-present Facebook. All Rights Reserved.< / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "preprocessor" > #pragma once< / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include " ../../FaissAssert.h" < / span > < / div >
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< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include < cuda_runtime.h> < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "preprocessor" > #include < cublas_v2.h> < / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include < vector> < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "keyword" > namespace < / span > faiss { < span class = "keyword" > namespace < / span > gpu {< / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "comment" > /// Returns the current thread-local GPU device< / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > int< / span > getCurrentDevice();< / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "comment" > /// Sets the current thread-local GPU device< / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > setCurrentDevice(< span class = "keywordtype" > int< / span > device);< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "comment" > /// Returns the number of available GPU devices< / span > < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > int< / span > getNumDevices();< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "comment" > /// Synchronizes the CPU against all devices (equivalent to< / span > < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "comment" > /// cudaDeviceSynchronize for each device)< / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > synchronizeAllDevices();< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "comment" > /// Returns a cached cudaDeviceProp for the given device< / span > < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < span class = "comment" > < / span > cudaDeviceProp& getDeviceProperties(< span class = "keywordtype" > int< / span > device);< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "comment" > /// Returns the maximum number of threads available for the given GPU< / span > < / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "comment" > /// device< / span > < / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > int< / span > getMaxThreads(< span class = "keywordtype" > int< / span > device);< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < span class = "comment" > /// Equivalent to getMaxThreads(getCurrentDevice())< / span > < / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > int< / span > getMaxThreadsCurrentDevice();< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "comment" > /// Returns the maximum smem available for the given GPU device< / span > < / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > size_t< / span > getMaxSharedMemPerBlock(< span class = "keywordtype" > int< / span > device);< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "comment" > /// Equivalent to getMaxSharedMemPerBlock(getCurrentDevice())< / span > < / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > size_t< / span > getMaxSharedMemPerBlockCurrentDevice();< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "comment" > /// For a given pointer, returns whether or not it is located on< / span > < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "comment" > /// a device (deviceId > = 0) or the host (-1).< / span > < / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > int< / span > getDeviceForAddress(< span class = "keyword" > const< / span > < span class = "keywordtype" > void< / span > * p);< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "comment" > < / span > < / div >
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< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "comment" > /// Does the given device support full unified memory sharing host< / span > < / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "comment" > /// memory?< / span > < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > bool< / span > getFullUnifiedMemSupport(< span class = "keywordtype" > int< / span > device);< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "comment" > /// Equivalent to getFullUnifiedMemSupport(getCurrentDevice())< / span > < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > bool< / span > getFullUnifiedMemSupportCurrentDevice();< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "comment" > /// RAII object to set the current device, and restore the previous< / span > < / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "comment" > /// device upon destruction< / span > < / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > < a class = "line" href = "classfaiss_1_1gpu_1_1DeviceScope.html" > 62< / a > < / span >   < span class = "comment" > < / span > < span class = "keyword" > class < / span > < a class = "code" href = "classfaiss_1_1gpu_1_1DeviceScope.html" > DeviceScope< / a > {< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keyword" > public< / span > :< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < span class = "keyword" > explicit< / span > < a class = "code" href = "classfaiss_1_1gpu_1_1DeviceScope.html" > DeviceScope< / a > (< span class = "keywordtype" > int< / span > device);< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   ~< a class = "code" href = "classfaiss_1_1gpu_1_1DeviceScope.html" > DeviceScope< / a > ();< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "keyword" > private< / span > :< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < span class = "keywordtype" > int< / span > prevDevice_;< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   };< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "comment" > /// RAII object to manage a cublasHandle_t< / span > < / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > < a class = "line" href = "classfaiss_1_1gpu_1_1CublasHandleScope.html" > 72< / a > < / span >   < span class = "comment" > < / span > < span class = "keyword" > class < / span > < a class = "code" href = "classfaiss_1_1gpu_1_1CublasHandleScope.html" > CublasHandleScope< / a > {< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "keyword" > public< / span > :< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1CublasHandleScope.html" > CublasHandleScope< / a > ();< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   ~< a class = "code" href = "classfaiss_1_1gpu_1_1CublasHandleScope.html" > CublasHandleScope< / a > ();< / 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 >   cublasHandle_t < span class = "keyword" > get< / span > () { < span class = "keywordflow" > return< / span > blasHandle_; }< / 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 = "keyword" > private< / span > :< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   cublasHandle_t blasHandle_;< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   };< / 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 >   < span class = "comment" > // RAII object to manage a cudaEvent_t< / span > < / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > < a class = "line" href = "classfaiss_1_1gpu_1_1CudaEvent.html" > 84< / a > < / span >   < span class = "keyword" > class < / span > < a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html" > CudaEvent< / a > {< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < span class = "keyword" > public< / span > :< span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < span class = "comment" > /// Creates an event and records it in this stream< / span > < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < span class = "comment" > < / span > < span class = "keyword" > explicit< / span > < a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html#af7f5fa36dbff9e6126c1b01218f147e1" > CudaEvent< / a > (cudaStream_t stream);< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html#af7f5fa36dbff9e6126c1b01218f147e1" > CudaEvent< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html" > CudaEvent< / a > & event) = < span class = "keyword" > delete< / span > ;< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html#af7f5fa36dbff9e6126c1b01218f147e1" > CudaEvent< / a > (< a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html" > CudaEvent< / a > & & event) noexcept;< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   ~< a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html" > CudaEvent< / a > ();< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "keyword" > inline< / span > cudaEvent_t < span class = "keyword" > get< / span > () { < span class = "keywordflow" > return< / span > event_; }< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "comment" > /// Wait on this event in this stream< / span > < / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > < a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html#ad8968b298b95788c7679d7e5aa0571eb" > streamWaitOnEvent< / a > (cudaStream_t stream);< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "comment" > /// Have the CPU wait for the completion of this event< / span > < / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > < a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html#a9c85540093aaf87de80ece9f854e7c57" > cpuWaitOnEvent< / a > ();< / 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_1CudaEvent.html" > CudaEvent< / a > & operator=(< a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html" > CudaEvent< / a > & & event) noexcept;< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html" > CudaEvent< / a > & operator=(< a class = "code" href = "classfaiss_1_1gpu_1_1CudaEvent.html" > CudaEvent< / a > & event) = < span class = "keyword" > delete< / span > ;< / 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 >   < span class = "keyword" > private< / span > :< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   cudaEvent_t event_;< / 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 >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "comment" > /// Wrapper to test return status of CUDA functions< / span > < / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "comment" > < / span > < span class = "preprocessor" > #define CUDA_VERIFY(X) \< / span > < / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "preprocessor" > do { \< / span > < / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < span class = "preprocessor" > auto err__ = (X); \< / span > < / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < span class = "preprocessor" > FAISS_ASSERT_FMT(err__ == cudaSuccess, " CUDA error %d" , (int) err__); \< / span > < / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "preprocessor" > } while (0)< / span > < / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "preprocessor" > < / span > < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < span class = "comment" > /// Wrapper to synchronously probe for CUDA errors< / span > < / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "comment" > < / span > < span class = "comment" > // #define FAISS_GPU_SYNC_ERROR 1< / 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 >   < span class = "preprocessor" > #ifdef FAISS_GPU_SYNC_ERROR< / span > < / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < span class = "preprocessor" > < / span > < span class = "preprocessor" > #define CUDA_TEST_ERROR() \< / span > < / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   < span class = "preprocessor" > do { \< / span > < / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < span class = "preprocessor" > CUDA_VERIFY(cudaDeviceSynchronize()); \< / span > < / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "preprocessor" > } while (0)< / span > < / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "preprocessor" > < / span > < span class = "preprocessor" > #else< / span > < / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < span class = "preprocessor" > < / span > < span class = "preprocessor" > #define CUDA_TEST_ERROR() \< / span > < / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "preprocessor" > do { \< / span > < / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   < span class = "preprocessor" > CUDA_VERIFY(cudaGetLastError()); \< / span > < / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < span class = "preprocessor" > } while (0)< / span > < / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "preprocessor" > < / span > < span class = "preprocessor" > #endif< / span > < / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < span class = "preprocessor" > < / span > < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   < span class = "comment" > /// Call for a collection of streams to wait on< / span > < / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   < span class = "comment" > < / span > < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > L1, < span class = "keyword" > typename< / span > L2> < / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   < span class = "keywordtype" > void< / span > streamWaitBase(< span class = "keyword" > const< / span > L1& listWaiting, < span class = "keyword" > const< / span > L2& listWaitOn) {< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < span class = "comment" > // For all the streams we are waiting on, create an event< / span > < / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   std::vector< cudaEvent_t> events;< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > & stream : listWaitOn) {< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   cudaEvent_t event;< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   CUDA_VERIFY(cudaEventCreateWithFlags(& event, cudaEventDisableTiming));< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   CUDA_VERIFY(cudaEventRecord(event, stream));< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   events.push_back(event);< / 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 >   < / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "comment" > // For all the streams that are waiting, issue a wait< / span > < / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > & stream : listWaiting) {< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > & event : events) {< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   CUDA_VERIFY(cudaStreamWaitEvent(stream, event, 0));< / 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 >   }< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > & event : events) {< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   CUDA_VERIFY(cudaEventDestroy(event));< / 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 >   }< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < span class = "comment" > /// These versions allow usage of initializer_list as arguments, since< / span > < / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < span class = "comment" > /// otherwise {...} doesn' t have a type< / span > < / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "comment" > < / span > < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > L1> < / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "keywordtype" > void< / span > streamWait(< span class = "keyword" > const< / span > L1& a,< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   < span class = "keyword" > const< / span > std::initializer_list< cudaStream_t> & b) {< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   streamWaitBase(a, b);< / 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 >   < / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > L2> < / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   < span class = "keywordtype" > void< / span > streamWait(< span class = "keyword" > const< / span > std::initializer_list< cudaStream_t> & a,< / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < span class = "keyword" > const< / span > L2& b) {< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   streamWaitBase(a, b);< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / 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 >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > void< / span > streamWait(< span class = "keyword" > const< / span > std::initializer_list< cudaStream_t> & a,< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < span class = "keyword" > const< / span > std::initializer_list< cudaStream_t> & b) {< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   streamWaitBase(a, b);< / 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 >   } } < span class = "comment" > // namespace< / span > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1CudaEvent_html_a9c85540093aaf87de80ece9f854e7c57" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1CudaEvent.html#a9c85540093aaf87de80ece9f854e7c57" > faiss::gpu::CudaEvent::cpuWaitOnEvent< / a > < / div > < div class = "ttdeci" > void cpuWaitOnEvent()< / div > < div class = "ttdoc" > Have the CPU wait for the completion of this event. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "DeviceUtils_8cpp_source.html#l00168" > DeviceUtils.cpp:168< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1CudaEvent_html_ad8968b298b95788c7679d7e5aa0571eb" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1CudaEvent.html#ad8968b298b95788c7679d7e5aa0571eb" > faiss::gpu::CudaEvent::streamWaitOnEvent< / a > < / div > < div class = "ttdeci" > void streamWaitOnEvent(cudaStream_t stream)< / div > < div class = "ttdoc" > Wait on this event in this stream. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "DeviceUtils_8cpp_source.html#l00163" > DeviceUtils.cpp:163< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1CudaEvent_html_af7f5fa36dbff9e6126c1b01218f147e1" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1CudaEvent.html#af7f5fa36dbff9e6126c1b01218f147e1" > faiss::gpu::CudaEvent::CudaEvent< / a > < / div > < div class = "ttdeci" > CudaEvent(cudaStream_t stream)< / div > < div class = "ttdoc" > Creates an event and records it in this stream. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "DeviceUtils_8cpp_source.html#l00137" > DeviceUtils.cpp:137< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1DeviceScope_html" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1DeviceScope.html" > faiss::gpu::DeviceScope< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "DeviceUtils_8h_source.html#l00062" > DeviceUtils.h:62< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1CublasHandleScope_html" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1CublasHandleScope.html" > faiss::gpu::CublasHandleScope< / a > < / div > < div class = "ttdoc" > RAII object to manage a cublasHandle_t. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "DeviceUtils_8h_source.html#l00072" > DeviceUtils.h:72< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1CudaEvent_html" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1CudaEvent.html" > faiss::gpu::CudaEvent< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "DeviceUtils_8h_source.html#l00084" > DeviceUtils.h:84< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
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