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86 lines
2.5 KiB
86 lines
2.5 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#include "paddle/memory/memory.h"
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#include "paddle/memory/detail/buddy_allocator.h"
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#include "paddle/memory/detail/system_allocator.h"
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#include <cstring> // for memcpy
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namespace paddle {
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namespace memory {
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detail::BuddyAllocator* GetCPUBuddyAllocator() {
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static detail::BuddyAllocator* a = nullptr;
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if (a == nullptr) {
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a = new detail::BuddyAllocator(new detail::CPUAllocator,
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platform::CpuMinChunkSize(),
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platform::CpuMaxChunkSize());
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}
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return a;
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}
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template <>
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void* Alloc<platform::CPUPlace>(platform::CPUPlace place, size_t size) {
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return GetCPUBuddyAllocator()->Alloc(size);
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}
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template <>
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void Free<platform::CPUPlace>(platform::CPUPlace place, void* p) {
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GetCPUBuddyAllocator()->Free(p);
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}
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template <>
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size_t Used<platform::CPUPlace>(platform::CPUPlace place) {
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return GetCPUBuddyAllocator()->Used();
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}
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#ifndef PADDLE_ONLY_CPU
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detail::BuddyAllocator* GetGPUBuddyAllocator(int gpu_id) {
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static detail::BuddyAllocator** as = NULL;
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if (as == NULL) {
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int gpu_num = platform::GetDeviceCount();
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as = new detail::BuddyAllocator*[gpu_num];
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for (int gpu = 0; gpu < gpu_num; gpu++) {
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platform::SetDeviceId(gpu);
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as[gpu] = new detail::BuddyAllocator(new detail::GPUAllocator,
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platform::GpuMinChunkSize(),
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platform::GpuMaxChunkSize());
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}
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}
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platform::SetDeviceId(gpu_id);
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return as[gpu_id];
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}
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template <>
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void* Alloc<platform::GPUPlace>(platform::GPUPlace place, size_t size) {
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return GetGPUBuddyAllocator(place.device)->Alloc(size);
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}
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template <>
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void Free<platform::GPUPlace>(platform::GPUPlace place, void* p) {
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GetGPUBuddyAllocator(place.device)->Free(p);
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}
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template <>
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size_t Used<platform::GPUPlace>(platform::GPUPlace place) {
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return GetGPUBuddyAllocator(place.device)->Used();
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}
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#endif // PADDLE_ONLY_CPU
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} // namespace memory
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} // namespace paddle
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