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simplified addBias2D for CUDA (#285) 

Signed-off-by: raver119 <raver119@gmail.com>
master
raver119 2020-03-04 09:50:55 +03:00 committed by GitHub
parent 11d148a5eb
commit f990b2486d
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 43 additions and 7 deletions
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50
libnd4j/include/ops/declarable/helpers/cuda/addBias.cu
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@ -91,19 +91,55 @@ static void addBiasCudaLauncher(const int blocksPerGrid, const int threadsPerBlo
addBiasCuda<X,Y><<<blocksPerGrid, threadsPerBlock, sharedMem, *stream>>>(vx, xShapeInfo, vy, yShapeInfo, vz, zShapeInfo, isNCHW);
}
template<typename X, typename Y>
__global__ static void addBias2DCuda( const void* vx,
const void* vy,
void* vz,
uint32_t blocks, uint32_t length) {
auto y = reinterpret_cast<const Y*>(vy);
for (uint32_t b = blockIdx.x; b < blocks; b += gridDim.x) {
auto x = reinterpret_cast<const X*>(vx) + length * b;
auto z = reinterpret_cast<X*>(vz) + length * b;
for (uint32_t e = threadIdx.x; e < length; e += blockDim.x) {
z[e] = x[e] + y[e];
}
}
}
template<typename X, typename Y>
static void addBias2DCudaLauncher(const cudaStream_t *stream, const void* vx,
const void* vy,
void* vz,
uint32_t blocks, uint32_t length) {
addBias2DCuda<X,Y><<<256, 1024, 128, *stream>>>(vx, vy, vz, blocks, length);
}
//////////////////////////////////////////////////////////////////////////
void addBias(sd::graph::Context& block, const NDArray& input, const NDArray& bias, NDArray& output, const bool isNCHW) {
PointersManager manager(block.launchContext(), "addBias");
const int threadsPerBlock = MAX_NUM_THREADS/2;
const int blocksPerGrid = (input.lengthOf() + threadsPerBlock - 1) / threadsPerBlock;
const int sharedMem = input.rankOf() * sizeof(Nd4jLong) * threadsPerBlock + 128;
NDArray::prepareSpecialUse({&output}, {&input, &bias});
BUILD_DOUBLE_SELECTOR(input.dataType(), bias.dataType(), addBiasCudaLauncher, (blocksPerGrid, threadsPerBlock, sharedMem, block.launchContext()->getCudaStream(), input.getSpecialBuffer(), input.getSpecialShapeInfo(), bias.getSpecialBuffer(), bias.getSpecialShapeInfo(), output.specialBuffer(), output.specialShapeInfo(), isNCHW), FLOAT_TYPES, FLOAT_TYPES);
NDArray::registerSpecialUse({&output}, {&input, &bias});
if (input.rankOf() == 2 && bias.rankOf() == 1 && input.ordering() == 'c' && output.ordering() == 'c' && input.ews() == 1 && bias.ews() == 1 && input.sizeAt(1) == bias.sizeAt(0)) {
BUILD_DOUBLE_SELECTOR(input.dataType(), bias.dataType(), addBias2DCudaLauncher,
(block.launchContext()->getCudaStream(), input.getSpecialBuffer(), bias.getSpecialBuffer(), output.specialBuffer(), input.sizeAt(0), bias.sizeAt(0)),
FLOAT_TYPES, FLOAT_TYPES);
} else {
// default case
const int threadsPerBlock = MAX_NUM_THREADS / 2;
const int blocksPerGrid = (input.lengthOf() + threadsPerBlock - 1) / threadsPerBlock;
const int sharedMem = input.rankOf() * sizeof(Nd4jLong) * threadsPerBlock + 128;
BUILD_DOUBLE_SELECTOR(input.dataType(), bias.dataType(), addBiasCudaLauncher,
(blocksPerGrid, threadsPerBlock, sharedMem, block.launchContext()->getCudaStream(), input.getSpecialBuffer(), input.getSpecialShapeInfo(), bias.getSpecialBuffer(), bias.getSpecialShapeInfo(), output.specialBuffer(), output.specialShapeInfo(), isNCHW),
FLOAT_TYPES, FLOAT_TYPES);
}
NDArray::registerSpecialUse({&output}, {&input, &bias});
manager.synchronize();
}