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"fix gpu init" #7528

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Jan 31, 2018
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15 changes: 11 additions & 4 deletions paddle/framework/init.cc
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ See the License for the specific language governing permissions and
limitations under the License. */
#include <string.h> // for strdup
#include <algorithm>
#include <stdexcept>
#include <string>

#include "paddle/framework/init.h"
Expand Down Expand Up @@ -46,17 +47,23 @@ void InitDevices() {

std::vector<platform::Place> places;
places.emplace_back(platform::CPUPlace());
int count = 0;

#ifdef PADDLE_WITH_CUDA
int count = platform::GetCUDADeviceCount();
for (int i = 0; i < count; ++i) {
places.emplace_back(platform::CUDAPlace(i));
try {
count = platform::GetCUDADeviceCount();
} catch (const std::exception &exp) {
LOG(WARNING) << "Compiled with WITH_GPU, but no GPU found in runtime.";
}
#else
LOG(WARNING)
<< "'GPU' is not supported, Please re-compile with WITH_GPU option";
<< "'CUDA' is not supported, Please re-compile with WITH_GPU option";
#endif

for (int i = 0; i < count; ++i) {
places.emplace_back(platform::CUDAPlace(i));
}

platform::DeviceContextPool::Init(places);
}

Expand Down
16 changes: 15 additions & 1 deletion paddle/framework/init_test.cc
Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,21 @@ TEST(InitDevices, CPU) {
using paddle::framework::InitDevices;
using paddle::platform::DeviceContextPool;

#ifndef PADDLE_WITH_CUDA
InitDevices();
DeviceContextPool& pool = DeviceContextPool::Instance();
ASSERT_GE(pool.size(), 1U);
ASSERT_EQ(pool.size(), 1U);
#endif
}

TEST(InitDevices, CUDA) {
using paddle::framework::InitDevices;
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#ifdef PADDLE_WITH_CUDA should be placed in line31.

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This test is compiled in nv_test.
So #ifdef PADDLE_WITH_CUDA is no needed.

using paddle::platform::DeviceContextPool;

#ifdef PADDLE_WITH_CUDA
int count = paddle::platform::GetCUDADeviceCount();
InitDevices();
DeviceContextPool& pool = DeviceContextPool::Instance();
ASSERT_EQ(pool.size(), 1U + static_cast<unsigned>(count));
#endif
}