提交 8c9a7f1c 编写于 作者: G gangliao 提交者: GitHub

Merge pull request #3568 from gangliao/environ

Add environment variable interface
......@@ -19,8 +19,13 @@ limitations under the License. */
#include <memory> // for unique_ptr
#include <mutex> // for call_once
#include "glog/logging.h"
#include "paddle/memory/detail/buddy_allocator.h"
#include "paddle/memory/detail/system_allocator.h"
#include "paddle/platform/gpu_info.h"
DECLARE_double(fraction_of_gpu_memory_to_use);
namespace paddle {
namespace memory {
......@@ -80,6 +85,11 @@ BuddyAllocator* GetGPUBuddyAllocator(int gpu_id) {
platform::GpuMinChunkSize(),
platform::GpuMaxChunkSize()));
}
VLOG(3) << "\n\nNOTE: each GPU device use "
<< FLAGS_fraction_of_gpu_memory_to_use * 100 << "% of GPU memory.\n"
<< "You can set environment variable '"
<< platform::kEnvFractionGpuMemoryToUse
<< "' to change the fraction of GPU usage.\n\n";
});
platform::SetDeviceId(gpu_id);
......
......@@ -14,7 +14,6 @@ limitations under the License. */
#pragma once
#include "paddle/platform/gpu_info.h"
#include "paddle/platform/place.h"
namespace paddle {
......
cc_library(cpu_info SRCS cpu_info.cc DEPS gflags glog)
cc_test(cpu_info_test SRCS cpu_info_test.cc DEPS cpu_info)
nv_library(gpu_info SRCS gpu_info.cc DEPS gflags)
nv_library(gpu_info SRCS gpu_info.cc DEPS gflags glog)
cc_library(place SRCS place.cc)
cc_test(place_test SRCS place_test.cc DEPS place glog gflags)
......@@ -9,6 +9,7 @@ cc_test(place_test SRCS place_test.cc DEPS place glog gflags)
add_subdirectory(dynload)
cc_test(enforce_test SRCS enforce_test.cc DEPS stringpiece)
cc_test(environment_test SRCS environment_test.cc DEPS stringpiece)
IF(WITH_GPU)
set(GPU_CTX_DEPS dynload_cuda dynamic_loader)
......
/* 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
#include <stdlib.h>
#include <unistd.h>
#include <vector>
#include "paddle/platform/enforce.h"
#include "paddle/string/piece.h"
extern char** environ; // for environment variables
namespace paddle {
namespace platform {
inline void SetEnvVariable(const std::string& name, const std::string& value) {
PADDLE_ENFORCE_NE(setenv(name.c_str(), value.c_str(), 1), -1,
"Failed to set environment variable %s=%s", name, value);
}
inline void UnsetEnvVariable(const std::string& name) {
PADDLE_ENFORCE_NE(unsetenv(name.c_str()), -1,
"Failed to unset environment variable %s", name);
}
inline bool IsEnvVarDefined(const std::string& name) {
return std::getenv(name.c_str()) != nullptr;
}
inline std::string GetEnvValue(const std::string& name) {
PADDLE_ENFORCE(IsEnvVarDefined(name),
"Tried to access undefined environment variable %s", name);
return std::getenv(name.c_str());
}
inline std::vector<std::string> GetAllEnvVariables() {
std::vector<std::string> vars;
for (auto var = environ; *var != nullptr; ++var) {
auto tail = string::Index(*var, "=");
auto name = string::SubStr(*var, 0, tail).ToString();
vars.push_back(name);
}
return vars;
}
} // 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. */
#include "paddle/platform/environment.h"
#include "glog/logging.h"
#include "gtest/gtest.h"
TEST(ENVIRONMENT, ACCESS) {
namespace platform = paddle::platform;
namespace string = paddle::string;
platform::SetEnvVariable("PADDLE_USE_ENV", "TRUE");
EXPECT_TRUE(platform::IsEnvVarDefined("PADDLE_USE_ENV"));
EXPECT_EQ(platform::GetEnvValue("PADDLE_USE_ENV"), "TRUE");
platform::UnsetEnvVariable("PADDLE_USE_ENV");
EXPECT_FALSE(platform::IsEnvVarDefined("PADDLE_USE_ENV"));
platform::SetEnvVariable("PADDLE_USE_ENV1", "Hello ");
platform::SetEnvVariable("PADDLE_USE_ENV2", "World, ");
platform::SetEnvVariable("PADDLE_USE_ENV3", "PaddlePaddle!");
std::string env_info;
auto vars = platform::GetAllEnvVariables();
for_each(vars.begin(), vars.end(), [&](const std::string& var) {
env_info += platform::GetEnvValue(var);
});
EXPECT_TRUE(string::Contains(env_info, "Hello World, PaddlePaddle!"));
platform::UnsetEnvVariable("PADDLE_USE_ENV1");
platform::UnsetEnvVariable("PADDLE_USE_ENV2");
platform::UnsetEnvVariable("PADDLE_USE_ENV3");
env_info.clear();
vars = platform::GetAllEnvVariables();
for_each(vars.begin(), vars.end(), [&](const std::string& var) {
env_info += platform::GetEnvValue(var);
});
EXPECT_FALSE(string::Contains(env_info, "Hello World, PaddlePaddle!"));
EXPECT_FALSE(platform::IsEnvVarDefined("PADDLE_USE_ENV1"));
EXPECT_FALSE(platform::IsEnvVarDefined("PADDLE_USE_ENV2"));
EXPECT_FALSE(platform::IsEnvVarDefined("PADDLE_USE_ENV3"));
}
......@@ -13,8 +13,11 @@ 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/enforce.h"
#include "paddle/platform/environment.h"
DEFINE_double(fraction_of_gpu_memory_to_use, 0.95,
"Default use 95% of GPU memory for PaddlePaddle,"
......@@ -70,6 +73,13 @@ size_t GpuMaxChunkSize() {
GpuMemoryUsage(available, total);
if (IsEnvVarDefined(kEnvFractionGpuMemoryToUse)) {
auto val = std::stod(GetEnvValue(kEnvFractionGpuMemoryToUse));
PADDLE_ENFORCE_GT(val, 0.0);
PADDLE_ENFORCE_LE(val, 1.0);
FLAGS_fraction_of_gpu_memory_to_use = val;
}
// Reserving the rest memory for page tables, etc.
size_t reserving = (1 - FLAGS_fraction_of_gpu_memory_to_use) * total;
......
......@@ -18,10 +18,15 @@ limitations under the License. */
#include <cuda_runtime.h>
#include <stddef.h>
#include <string>
namespace paddle {
namespace platform {
//! Environment variable: fraction of GPU memory to use on each device.
const std::string kEnvFractionGpuMemoryToUse =
"PADDLE_FRACTION_GPU_MEMORY_TO_USE";
//! Get the total number of GPU devices in system.
int GetDeviceCount();
......
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