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https://github.com/facebookresearch/faiss.git
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27a4ba0d93
* [c_api] minor tweak on Index_c header imports * [c_api] Multi GPU constructs - Add constructor & destructor for `FaissGpuMultipleClonerOptions` - Add function `faiss_index_cpu_to_gpu_multiple` - Add function `faiss_index_cpu_to_gpu_multiple_with_options` * [c_api] fix doc comments in GpuClonerOptions * [c_api] Improve cpu_to_gpu_multiple prototype * [c_api] Improve cpu_to_gpu_multiple prototype * [c_api] Add dtor definition for GpuMultipleClonerOptions
98 lines
3.3 KiB
C++
98 lines
3.3 KiB
C++
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD+Patents license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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// Copyright 2004-present Facebook. All Rights Reserved.
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// -*- c++ -*-
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#include "GpuAutoTune_c.h"
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#include "GpuClonerOptions_c.h"
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#include "macros_impl.h"
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#include "Index.h"
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#include "gpu/GpuAutoTune.h"
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#include "gpu/GpuClonerOptions.h"
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#include <vector>
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using faiss::Index;
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using faiss::gpu::GpuResources;
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using faiss::gpu::GpuClonerOptions;
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using faiss::gpu::GpuMultipleClonerOptions;
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int faiss_index_gpu_to_cpu(const FaissIndex* gpu_index, FaissIndex** p_out) {
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try {
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auto cpu_index = faiss::gpu::index_gpu_to_cpu(
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reinterpret_cast<const Index*>(gpu_index)
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);
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*p_out = reinterpret_cast<FaissIndex*>(cpu_index);
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} CATCH_AND_HANDLE
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}
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/// converts any CPU index that can be converted to GPU
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int faiss_index_cpu_to_gpu(FaissGpuResources* resources, int device, const FaissIndex *index, FaissGpuIndex** p_out) {
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try {
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auto res = reinterpret_cast<GpuResources*>(resources);
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auto gpu_index = faiss::gpu::index_cpu_to_gpu(
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res, device, reinterpret_cast<const Index*>(index)
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);
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*p_out = reinterpret_cast<FaissGpuIndex*>(gpu_index);
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} CATCH_AND_HANDLE
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}
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int faiss_index_cpu_to_gpu_with_options(
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FaissGpuResources* resources, int device,
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const FaissIndex *index, const FaissGpuClonerOptions* options,
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FaissGpuIndex** p_out)
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{
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try {
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auto res = reinterpret_cast<GpuResources*>(resources);
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auto gpu_index = faiss::gpu::index_cpu_to_gpu(
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res, device, reinterpret_cast<const Index*>(index),
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reinterpret_cast<const GpuClonerOptions*>(options));
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*p_out = reinterpret_cast<FaissGpuIndex*>(gpu_index);
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} CATCH_AND_HANDLE
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}
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int faiss_index_cpu_to_gpu_multiple(
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FaissGpuResources* const* resources_vec,
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const int* devices, size_t devices_size,
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const FaissIndex* index, FaissGpuIndex** p_out)
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{
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try {
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std::vector<GpuResources*> res(devices_size);
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for (auto i = 0u; i < devices_size; ++i) {
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res[i] = reinterpret_cast<GpuResources*>(resources_vec[i]);
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}
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std::vector<int> dev(devices, devices + devices_size);
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auto gpu_index = faiss::gpu::index_cpu_to_gpu_multiple(
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res, dev, reinterpret_cast<const Index*>(index));
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*p_out = reinterpret_cast<FaissGpuIndex*>(gpu_index);
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} CATCH_AND_HANDLE
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}
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int faiss_index_cpu_to_gpu_multiple_with_options(
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FaissGpuResources** resources_vec, size_t resources_vec_size,
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int* devices, size_t devices_size,
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const FaissIndex* index, const FaissGpuMultipleClonerOptions* options,
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FaissGpuIndex** p_out)
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{
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try {
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std::vector<GpuResources*> res(resources_vec_size);
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for (auto i = 0u; i < resources_vec_size; ++i) {
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res[i] = reinterpret_cast<GpuResources*>(resources_vec[i]);
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}
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std::vector<int> dev(devices, devices + devices_size);
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auto gpu_index = faiss::gpu::index_cpu_to_gpu_multiple(
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res, dev, reinterpret_cast<const Index*>(index),
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reinterpret_cast<const GpuMultipleClonerOptions*>(options));
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*p_out = reinterpret_cast<FaissGpuIndex*>(gpu_index);
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} CATCH_AND_HANDLE
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}
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