提交 d3b77a5b 编写于 作者: L liaogang

ENH: Add Gpu info

上级 0e6ddcc7
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
Licensed 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. */
#include "paddle/platform/gpu_info.h"
#include "gflags/gflags.h"
#include "paddle/platform/error.h"
DEFINE_double(fraction_of_gpu_memory_to_use, 0.95,
"Default use 95% of GPU memory for PaddlePaddle,"
"reserve the rest for page tables, etc");
namespace paddle {
namespace platform {
int GpuDeviceCount() {
int count;
throw_on_error(
cudaGetDeviceCount(&count),
"cudaGetDeviceCount failed in paddle::platform::GpuDeviceCount");
return count;
}
void GpuMemoryUsage(size_t& available, size_t& total) {
throw_on_error(cudaMemGetInfo(&available, &total),
"cudaMemGetInfo failed in paddle::platform::GetMemoryUsage");
}
size_t GpuMaxAllocSize() {
size_t total = 0;
size_t available = 0;
GpuMemoryUsage(available, total);
return total * FLAGS_fraction_of_gpu_memory_to_use;
}
} // namespace platform
} // namespace paddle
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
Licensed 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. */
#pragma once
#ifndef PADDLE_ONLY_CPU
#include <stddef.h>
namespace paddle {
namespace platform {
//! Get the total number of GPU devices in system.
int GpuDeviceCount();
//!Get the memory usage of current GPU device.
void GpuMemoryUsage(size_t& available, size_t& total);
//! Get the maximum allocation size of current GPU device.
size_t GpuMaxAllocSize();
} // namespace platform
} // namespace paddle
#endif // PADDLE_ONLY_CPU
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