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138 lines
3.1 KiB
138 lines
3.1 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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#pragma once
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#include <stdlib.h>
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#include <mutex>
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#include "hl_gpu.h"
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#include "paddle/utils/Logging.h"
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namespace paddle {
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/**
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* @brief Allocator base class.
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*
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* This is the base class of all Allocator class.
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*/
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class Allocator {
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public:
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virtual ~Allocator() {}
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virtual void* alloc(size_t size) = 0;
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virtual void free(void* ptr) = 0;
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virtual std::string getName() = 0;
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};
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/**
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* @brief CPU allocator implementation.
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*/
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class CpuAllocator : public Allocator {
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public:
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~CpuAllocator() {}
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/**
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* @brief Aligned allocation on CPU.
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* @param size Size to be allocated.
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* @return Pointer to the allocated memory
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*/
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virtual void* alloc(size_t size) {
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void* ptr;
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#ifdef PADDLE_WITH_MKLDNN
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// refer to https://github.com/01org/mkl-dnn/blob/master/include/mkldnn.hpp
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// memory alignment
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CHECK_EQ(posix_memalign(&ptr, 4096ul, size), 0);
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#else
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CHECK_EQ(posix_memalign(&ptr, 32ul, size), 0);
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#endif
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CHECK(ptr) << "Fail to allocate CPU memory: size=" << size;
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return ptr;
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}
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/**
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* @brief Free the memory space.
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* @param ptr Pointer to be free.
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*/
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virtual void free(void* ptr) {
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if (ptr) {
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::free(ptr);
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}
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}
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virtual std::string getName() { return "cpu_alloc"; }
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};
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/**
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* @brief GPU allocator implementation.
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*/
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class GpuAllocator : public Allocator {
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public:
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~GpuAllocator() {}
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/**
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* @brief Allocate GPU memory.
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* @param size Size to be allocated.
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* @return Pointer to the allocated memory
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*/
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virtual void* alloc(size_t size) {
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void* ptr = hl_malloc_device(size);
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CHECK(ptr) << "Fail to allocate GPU memory " << size << " bytes";
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return ptr;
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}
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/**
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* @brief Free the GPU memory.
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* @param ptr Pointer to be free.
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*/
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virtual void free(void* ptr) {
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if (ptr) {
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hl_free_mem_device(ptr);
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}
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}
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virtual std::string getName() { return "gpu_alloc"; }
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};
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/**
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* @brief CPU pinned memory allocator implementation.
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*/
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class CudaHostAllocator : public Allocator {
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public:
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~CudaHostAllocator() {}
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/**
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* @brief Allocate pinned memory.
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* @param size Size to be allocated.
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* @return Pointer to the allocated memory
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*/
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virtual void* alloc(size_t size) {
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void* ptr = hl_malloc_host(size);
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CHECK(ptr) << "Fail to allocate pinned memory " << size << " bytes";
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return ptr;
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}
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/**
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* @brief Free the pinned memory.
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* @param ptr Pointer to be free.
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*/
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virtual void free(void* ptr) {
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if (ptr) {
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hl_free_mem_host(ptr);
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}
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}
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virtual std::string getName() { return "cuda_host_alloc"; }
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};
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} // namespace paddle
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