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Create one cuBlasHandle per GPU. Tests #2

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Create one cuBlasHandle per GPU. Tests #2

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15 changes: 11 additions & 4 deletions src/backend/cuda/blas.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -10,13 +10,15 @@
#include <blas.hpp>
#include <cuda_runtime.h>
#include <cublas_v2.h>
#include <platform.hpp>

#include <stdexcept>
#include <string>
#include <cassert>
#include <iostream>
#include <math.hpp>
#include <err_common.hpp>
#include <boost/scoped_ptr.hpp>

namespace cuda
{
Expand Down Expand Up @@ -48,24 +50,29 @@ class cublasHandle
{
cublasHandle_t handle;
public:
cublasHandle()
{
cublasHandle() : handle(0){
cublasStatus_t cErr;
cErr = cublasCreate(&handle);
if(cErr != CUBLAS_STATUS_SUCCESS) {
using std::string;
throw std::runtime_error(string("cuBLAS Error: ") + cublasErrorString(cErr));
}
}

~cublasHandle() { cublasDestroy(handle);}
operator cublasHandle_t() { return handle; }
};

cublasHandle&
getHandle()
{
static cublasHandle handle;
return handle;
using boost::scoped_ptr;
static scoped_ptr<cublasHandle> handle[DeviceManager::MAX_DEVICES];
if(!handle[getActiveDeviceId()]) {
handle[getActiveDeviceId()].reset(new cublasHandle());
}

return *handle[getActiveDeviceId()];
}

cublasOperation_t
Expand Down
32 changes: 32 additions & 0 deletions test/blas.cpp
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Expand Up @@ -208,3 +208,35 @@ TYPED_TEST(MatrixMultiply, RectangleVector_CPP)
{
cppMatMulCheck<TypeParam, true>(TEST_DIR"/blas/RectangleVector.test");
}

TYPED_TEST(MatrixMultiply, MultiGPUSquare_CPP)
{
for(int i = 0; i < af::getDeviceCount(); i++) {
af::setDevice(i);
cppMatMulCheck<TypeParam, false>(TEST_DIR"/blas/Basic.test");
}
}

TYPED_TEST(MatrixMultiply, MultiGPUNonSquare_CPP)
{
for(int i = 0; i < af::getDeviceCount(); i++) {
af::setDevice(i);
cppMatMulCheck<TypeParam, false>(TEST_DIR"/blas/NonSquare.test");
}
}

TYPED_TEST(MatrixMultiply, MultiGPUSquareVector_CPP)
{
for(int i = 0; i < af::getDeviceCount(); i++) {
af::setDevice(i);
cppMatMulCheck<TypeParam, true>(TEST_DIR"/blas/SquareVector.test");
}
}

TYPED_TEST(MatrixMultiply, MultiGPURectangleVector_CPP)
{
for(int i = 0; i < af::getDeviceCount(); i++) {
af::setDevice(i);
cppMatMulCheck<TypeParam, true>(TEST_DIR"/blas/RectangleVector.test");
}
}