| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #ifndef DISABLE_WARNINGS |
| |
| #include "singa/core/memory.h" |
| |
| #include <iostream> |
| |
| #include "singa/proto/core.pb.h" |
| #include "singa/utils/logging.h" |
| |
| #ifdef USE_CUDA |
| |
| namespace singa { |
| std::pair<size_t, size_t> CnMemPool::GetMemUsage() { |
| size_t free, total; |
| auto status = cnmemMemGetInfo(&free, &total, NULL); |
| CHECK_EQ(status, cnmemStatus_t::CNMEM_STATUS_SUCCESS) |
| << cnmemGetErrorString(status); |
| return std::make_pair(free, total); |
| } |
| std::pair<size_t, size_t> CnMemPool::GetMemUsage(int id) { |
| CHECK_EQ(cudaSetDevice(id), cudaError_t::cudaSuccess); |
| size_t free, total; |
| auto status = cnmemMemGetInfo(&free, &total, NULL); |
| CHECK_EQ(status, cnmemStatus_t::CNMEM_STATUS_SUCCESS) |
| << cnmemGetErrorString(status); |
| return std::make_pair(free, total); |
| } |
| |
| CnMemPool::CnMemPool(int numDevices, size_t init_size, size_t max_size) { |
| for (int i = 0; i < numDevices; i++) conf_.add_device(i); |
| conf_.set_init_size(init_size); |
| conf_.set_max_size(max_size); |
| } |
| |
| CnMemPool::CnMemPool(const MemPoolConf &conf) { conf_ = conf; } |
| |
| void CnMemPool::Init() { |
| mtx_.lock(); |
| if (!initialized_) { |
| const size_t kNBytesPerMB = (1u << 20); |
| CHECK_GE(conf_.device_size(), 1); |
| cnmemDevice_t *settingPtr = new cnmemDevice_t[conf_.device_size()]; |
| CHECK_GT(conf_.init_size(), 0u); |
| int i = 0; |
| for (auto device : conf_.device()) { |
| settingPtr[i].device = device; |
| settingPtr[i].size = conf_.init_size() * kNBytesPerMB; |
| settingPtr[i].numStreams = 0; |
| settingPtr[i].streams = NULL; |
| settingPtr[i].streamSizes = 0; |
| i++; |
| } |
| auto status = cnmemInit(conf_.device_size(), settingPtr, conf_.flag()); |
| CHECK_EQ(status, cnmemStatus_t::CNMEM_STATUS_SUCCESS) |
| << " " << cnmemGetErrorString(status); |
| delete[] settingPtr; |
| initialized_ = true; |
| } |
| mtx_.unlock(); |
| } |
| |
| CnMemPool::~CnMemPool() { |
| mtx_.lock(); |
| if (initialized_) { |
| cnmemStatus_t status = cnmemFinalize(); |
| CHECK_EQ(status, cnmemStatus_t::CNMEM_STATUS_SUCCESS) |
| << " " << cnmemGetErrorString(status); |
| initialized_ = false; |
| } |
| mtx_.unlock(); |
| } |
| |
| void CnMemPool::Malloc(void **ptr, const size_t size) { |
| if (!initialized_) Init(); |
| cnmemStatus_t status = cnmemMalloc(ptr, size, NULL); |
| CHECK_EQ(status, cnmemStatus_t::CNMEM_STATUS_SUCCESS) |
| << " " << cnmemGetErrorString(status); |
| } |
| |
| void CnMemPool::Free(void *ptr) { |
| CHECK(initialized_) |
| << "Cannot free the memory as the pool is not initialzied"; |
| cnmemStatus_t status = cnmemFree(ptr, NULL); |
| CHECK_EQ(status, cnmemStatus_t::CNMEM_STATUS_SUCCESS) |
| << " " << cnmemGetErrorString(status); |
| } |
| |
| // =========================================================================== |
| void CudaMemPool::Malloc(void **ptr, const size_t size) { |
| cudaError_t status = cudaMalloc(ptr, size); |
| CHECK_EQ(status, cudaError_t::cudaSuccess); |
| } |
| |
| void CudaMemPool::Free(void *ptr) { |
| cudaError_t status = cudaFree(ptr); |
| CHECK_EQ(status, cudaError_t::cudaSuccess); |
| } |
| } // namespace singa |
| #endif |
| |
| #endif |