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cavis/libnd4j/include/helpers/cuda_off/MmulHelper.cu

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/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
//
// @author raver119@gmail.com
// @author Yurii Shyrma (iuriish@yahoo.com)
//
#include <exceptions/cuda_exception.h>
#include <cublas_v2.h>
#include "../MmulHelper.h"
#include <specials_cuda.h>
#include <helpers/PointersManager.h>
namespace nd4j {
//////////////////////////////////////////////////////////////////////////////
// MXK x KxN = MxN
// C array must be in f order
template <typename T1, typename T2, typename T3>
static __global__ void usualCudaGemm(const bool transA, const bool transB, const int M, const int N, const int K, const double alpha, const void* vA, const int lda, const void* vB, const int ldb, const double beta, void* vC, const int ldc) {
T1* A = reinterpret_cast<T1*>(const_cast<void*>(vA));
T2* B = reinterpret_cast<T2*>(const_cast<void*>(vB));
T3* C = reinterpret_cast<T3*>(vC);
__shared__ T3 alphaZ, betaZ;
__shared__ Nd4jLong strideArow, strideAcol, strideBrow, strideBcol;
const int row = blockIdx.y * blockDim.y + threadIdx.y;
const int col = blockIdx.x * blockDim.x + threadIdx.x;
if(row == 0 && col == 0) {
alphaZ = alpha;
betaZ = beta;
if(transA) { strideArow = lda; strideAcol = 1; } else { strideArow = 1; strideAcol = lda; }
if(transB) { strideBrow = ldb; strideBcol = 1; } else { strideBrow = 1; strideBcol = ldb; }
}
__syncthreads();
T3 val = 0;
if (row < M && col < N)
for (int i = 0; i < K; i++)
val = val + A[row * strideArow + i * strideAcol] * B[i * strideBrow + col * strideBcol];
C[row + col * ldc] = alphaZ * val + betaZ * C[row + col * ldc];
}
////////////////////////////////////////////////////////////////////////
template <typename T1, typename T2, typename T3>
__host__ static void usualGemm(const dim3 &blocksPerGrid, const dim3 &threadsPerBlock, cudaStream_t *stream, const bool transA, const bool transB, const int M, const int N, const int K, const double alpha, const void* vA, const int lda, const void* vB, const int ldb, const double beta, void* vC, const int ldc) {
usualCudaGemm<T1,T2,T3><<<blocksPerGrid, threadsPerBlock, 1024, *stream>>>(transA, transB, M, N, K, alpha, vA, lda, vB, ldb, beta, vC, ldc);
}
//////////////////////////////////////////////////////////////////////////////
// MXN x N = M
template <typename T1, typename T2, typename T3>
static __global__ void usualCudaGemv(const bool transA, const int M, const int N, const double alpha, const void* vA, const int lda, const void* vX, const int incx, const double beta, void* vY, const int incy) {
T1* A = reinterpret_cast<T1*>(const_cast<void*>(vA));
T2* X = reinterpret_cast<T2*>(const_cast<void*>(vX));
T3* Y = reinterpret_cast<T3*>(vY);
__shared__ T3 alphaZ, betaZ;
__shared__ Nd4jLong strideArow, strideAcol;
const int row = blockIdx.x * blockDim.x + threadIdx.x;
if(row == 0) {
alphaZ = alpha;
betaZ = beta;
if(transA) { strideArow = lda; strideAcol = 1; } else { strideArow = 1; strideAcol = lda; }
}
__syncthreads();
T3 val = 0;
if (row < M)
for (int i = 0; i < N; i++) {
val = val + A[row * strideArow + i * strideAcol] * X[i * incx];
}
Y[row * incy] = alphaZ * val + betaZ * Y[row * incy];
}
////////////////////////////////////////////////////////////////////////
template <typename T1, typename T2, typename T3>
__host__ static void usualGemv(const dim3 &blocksPerGrid, const dim3 &threadsPerBlock, cudaStream_t *stream, const bool transA, const int M, const int N, const double alpha, const void* vA, const int lda, const void* vX, const int incx, const double beta, void* vY, const int incy) {
usualCudaGemv<T1,T2,T3><<<blocksPerGrid, threadsPerBlock, 1024, *stream>>>(transA, M, N, alpha, vA, lda, vX, incx, beta, vY, incy);
}
//////////////////////////////////////////////////////////////////////////////
template <typename T1, typename T2, typename T3>
static __global__ void usualCudaDot(const Nd4jLong length, const double alpha, const void* vX, const Nd4jLong incx, const void* vY, const Nd4jLong incy, const double beta, void* vZ) {
T1* X = reinterpret_cast<T1*>(const_cast<void*>(vX));
T2* Y = reinterpret_cast<T2*>(const_cast<void*>(vY));
T3* Z = reinterpret_cast<T3*>(vZ);
extern __shared__ char shmem[];
auto pairwiseMul = reinterpret_cast<T3*>(shmem);
const int tid = blockIdx.x * blockDim.x + threadIdx.x;
if(tid < length)
pairwiseMul[tid] = X[tid * incx] * Y[tid * incy];
__syncthreads();
if(tid == 0) {
T3 sum = 0;
for(Nd4jLong i = 0; i < length; ++i)
sum = sum + pairwiseMul[i];
*Z = (T3)alpha * sum + (T3)beta * *Z;
}
}
////////////////////////////////////////////////////////////////////////
template <typename T1, typename T2, typename T3>
__host__ static void usualDot(const dim3 &blocksPerGrid, const dim3 &threadsPerBlock, cudaStream_t *stream, const Nd4jLong length, const double alpha, const void* vX, const Nd4jLong incx, const void* vY, const Nd4jLong incy, const double beta, void* vZ) {
usualCudaDot<T1,T2,T3><<<blocksPerGrid, threadsPerBlock, length*sizeof(T3) + 128, *stream>>>(length, alpha, vX, incx, vY, incy, beta, vZ);
}
//////////////////////////////////////////////////////////////////////////////
// MXK x KxN = MxN
NDArray* MmulHelper::mmulMxM(const NDArray* A, const NDArray* B, NDArray* C, double alpha, double beta, const char outOrder) {
if(A->rankOf() != 2)
throw std::runtime_error("MmulHelper::mmulMxM cuda: rank of A array is not equal 2 !");
if(B->rankOf() != 2)
throw std::runtime_error("MmulHelper::mmulMxM cuda: rank of B array is not equal 2 !");
auto M = A->sizeAt(0);
auto K = A->sizeAt(1);
auto N = B->sizeAt(1);
if(C != nullptr && C->rankOf() != 2)
throw std::runtime_error("MmulHelper::mmulMxM cuda: rank of C array is not equal 2 !");
if(B->sizeAt(0) != K)
throw std::runtime_error("MmulHelper::mmulMxM cuda: B array has wrong number of rows !");
if(C != nullptr && C->sizeAt(0) != M)
throw std::runtime_error("MmulHelper::mmulMxM cuda: C array has wrong number of rows !");
if(C != nullptr && C->sizeAt(1) != N)
throw std::runtime_error("MmulHelper::mmulMxM cuda: C array has wrong number of columns !");
if(C == nullptr)
C = new NDArray(outOrder, {M,N}, DataTypeUtils::pickPairwiseResultType(A->dataType(), B->dataType()), A->getContext());
NDArray *pA(const_cast<NDArray*>(A)), *pB(const_cast<NDArray*>(B)), *pC(const_cast<NDArray*>(C));
std::vector<NDArray*> toDelete;
if(A->ews() != 1) {
pA = pA->dup('f');
toDelete.push_back(pA);
}
if(B->ews() != 1) {
pB = pB->dup('f');
toDelete.push_back(pB);
}
if(C->ews() != 1) {
pC = pC->dup('f');
toDelete.push_back(pC);
}
if(pC->ordering() != 'f') {
auto temp = pA;
pA = pB ->permute({1,0});
pB = temp->permute({1,0});
pC = pC ->permute({1,0});
toDelete.push_back(pA);
toDelete.push_back(pB);
toDelete.push_back(pC);
M = pA->sizeAt(0);
K = pA->sizeAt(1);
N = pB->sizeAt(1);
}
const auto aOrder = pA->ordering();
const auto bOrder = pB->ordering();
const bool transA = aOrder != 'f';
const bool transB = bOrder != 'f';
const cublasOperation_t transAblas = transA ? CUBLAS_OP_T : CUBLAS_OP_N;
const cublasOperation_t transBblas = transB ? CUBLAS_OP_T : CUBLAS_OP_N;
const int lda = aOrder == 'f' ? M : K;
const int ldb = bOrder == 'f' ? K : N;
const int ldc = M; // cOrder == 'f' ? M : N;
const auto aType = pA->dataType();
const auto bType = pB->dataType();
const auto cType = pC->dataType();
auto handle = reinterpret_cast<cublasHandle_t *>(A->getContext()->getCublasHandle());
auto stream = A->getContext()->getCudaStream();
auto status = cublasSetStream_v2(*handle, *stream);
if (status != CUBLAS_STATUS_SUCCESS) throw cuda_exception::build("MmulHelper::mmulMxM cuda failed !", status);
const bool AB(aType == bType), AC(aType == cType), ABC(AB && AC);
NDArray::prepareSpecialUse({pC}, {pA, pB});
// choose appropriate cuda gemm api depending on data types
if(ABC && aType == DataType::DOUBLE) {
status = cublasDgemm(*handle, transAblas, transBblas, M, N, K, &alpha, (double*)pA->getSpecialBuffer(), lda, (double*)pB->getSpecialBuffer(), ldb, &beta, (double*)pC->getSpecialBuffer(), ldc);
}
else if(ABC && aType == DataType::FLOAT32) {
float alphaF(alpha), betaF(beta);
status = cublasSgemm(*handle, transAblas, transBblas, M, N, K, &alphaF, (float*)pA->getSpecialBuffer(), lda, (float*)pB->getSpecialBuffer(), ldb, &betaF, (float*)pC->getSpecialBuffer(), ldc);
}
else if(ABC && aType == DataType::HALF) {
float16 alphaH(alpha), betaH(beta);
status = cublasHgemm(*handle, transAblas, transBblas, M, N, K, &alphaH.data, (__half*)pA->getSpecialBuffer(), lda, (__half*)pB->getSpecialBuffer(), ldb, &betaH.data, (__half*)pC->getSpecialBuffer(), ldc);
}
else if(AB && aType == DataType::INT8 && cType == DataType::FLOAT32) {
float alphaF(alpha), betaF(beta);
status = cublasSgemmEx(*handle, transAblas, transBblas, M, N, K, &alphaF, pA->getSpecialBuffer(), CUDA_R_8I, lda, pB->getSpecialBuffer(), CUDA_R_8I, ldb, &betaF, pC->getSpecialBuffer(), CUDA_R_32F, ldc);
}
else if(AB && aType == DataType::HALF && cType == DataType::FLOAT32) {
float alphaF(alpha), betaF(beta);
status = cublasSgemmEx(*handle, transAblas, transBblas, M, N, K, &alphaF, pA->getSpecialBuffer(), CUDA_R_16F, lda, pB->getSpecialBuffer(), CUDA_R_16F, ldb, &betaF, pC->getSpecialBuffer(), CUDA_R_32F, ldc);
}
else {
dim3 threadsPerBlock(N, M);
dim3 blocksPerGrid(1, 1);
if (M*N > 512){
threadsPerBlock.x = threadsPerBlock.y = 512;
blocksPerGrid.x = math::nd4j_ceil<double, int>(static_cast<double>(N) / threadsPerBlock.x); // cols
blocksPerGrid.y = math::nd4j_ceil<double, int>(static_cast<double>(M) / threadsPerBlock.y); // rows
}
BUILD_TRIPLE_SELECTOR(aType, bType, cType, usualGemm, (blocksPerGrid, threadsPerBlock, stream, transA, transB, M, N, K, alpha, pA->getSpecialBuffer(), lda, pB->getSpecialBuffer(), ldb, beta, pC->getSpecialBuffer(), ldc), LIBND4J_TYPES, FLOAT_TYPES, FLOAT_TYPES);
}
if (status != CUBLAS_STATUS_SUCCESS) throw cuda_exception::build("MmulHelper::mmulMxM cuda failed !", status);
auto cudaResult = cudaStreamSynchronize(*stream);
if (cudaResult != 0) throw cuda_exception::build("MmulHelper::mmulMxM cuda failed !", cudaResult);
NDArray::registerSpecialUse({pC}, {pA, pB});
if(C->ews() != 1)
C->assign(pC);
for(int i = toDelete.size() - 1; i >= 0; --i)
delete toDelete[i];
return C;
}
////////////////////////////////////////////////////////////////////////////
// MXN x N = M
NDArray* MmulHelper::mmulMxV(const NDArray* A, const NDArray* X, nd4j::NDArray* Y, const double alpha, const double beta, const char outOrder) {
int xLenDim, yLenDim(0);
if(A->rankOf() != 2)
throw std::runtime_error("MmulHelper::mmulMxV cuda: rank of A array is not equal 2 !");
if(!shape::isCommonVector(X->getShapeInfo(), xLenDim))
throw std::runtime_error("MmulHelper::mmulMxV cuda: X array must be vector !");
const auto M = A->sizeAt(0);
const auto N = A->sizeAt(1);
if(Y != nullptr && !shape::isCommonVector(Y->getShapeInfo(), yLenDim))
throw std::runtime_error("MmulHelper::mmulMxV cuda: Y array must be vector !");
if(X->lengthOf() != N)
throw std::runtime_error("MmulHelper::mmulMxV cuda: X vector has wrong length !");
if(Y != nullptr && Y->lengthOf() != M)
throw std::runtime_error("MmulHelper::mmulMxV cuda: Y array has wrong length !");
if(Y == nullptr)
Y = new NDArray(outOrder, {M}, DataTypeUtils::pickPairwiseResultType(A->dataType(), X->dataType()), A->getContext());
NDArray *pA(const_cast<NDArray*>(A));
if(A->ews() != 1)
pA = pA->dup('f');
const bool transA = pA->ordering() == 'c';
const cublasOperation_t transAblas = transA ? CUBLAS_OP_T : CUBLAS_OP_N;
int lda, lta;
if(transA) { lda = N; lta = M; }
else { lda = M; lta = N; }
const int incx = X->stridesOf()[xLenDim];
const int incy = Y->stridesOf()[yLenDim];
const auto aType = pA->dataType();
const auto xType = X->dataType();
const auto yType = Y->dataType();
auto handle = reinterpret_cast<cublasHandle_t *>(A->getContext()->getCublasHandle());
auto stream = A->getContext()->getCudaStream();
auto status = cublasSetStream_v2(*handle, *stream);
if (status != CUBLAS_STATUS_SUCCESS) throw cuda_exception::build("MmulHelper::mmulMxV cuda failed !", status);
const bool AX(aType == xType), AY(aType == yType), AXY(AX && AY);
NDArray::prepareSpecialUse({Y}, {pA, X});
// choose appropriate cuda gemm api depending on data types
if(AXY && aType == DataType::DOUBLE) {
status = cublasDgemv(*handle, transAblas, lda, lta, &alpha, (double*)pA->getSpecialBuffer(), lda, (double*)X->getSpecialBuffer(), incx, &beta, (double*)Y->getSpecialBuffer(), incy);
}
else if(AXY && aType == DataType::FLOAT32) {
float alphaF(alpha), betaF(beta);
status = cublasSgemv(*handle, transAblas, lda, lta, &alphaF, (float*)pA->getSpecialBuffer(), lda, (float*)X->getSpecialBuffer(), incx, &betaF, (float*)Y->getSpecialBuffer(), incy);
}
else {
dim3 threadsPerBlock(M);
dim3 blocksPerGrid(1);
if (M > 512){
threadsPerBlock.x = 512;
blocksPerGrid.x = math::nd4j_ceil<double, int>(static_cast<double>(M) / threadsPerBlock.x); // rows
}
BUILD_TRIPLE_SELECTOR(aType, xType, yType, usualGemv, (blocksPerGrid, threadsPerBlock, stream, transA, M, N, alpha, pA->getSpecialBuffer(), lda, X->getSpecialBuffer(), incx, beta, Y->getSpecialBuffer(), incy), LIBND4J_TYPES, FLOAT_TYPES, FLOAT_TYPES);
}
if (status != CUBLAS_STATUS_SUCCESS) throw cuda_exception::build("MmulHelper::mmulMxV cuda failed !", status);
auto cudaResult = cudaStreamSynchronize(*stream);
if (cudaResult != 0) throw cuda_exception::build("MmulHelper::mmulMxV cuda failed !", cudaResult);
NDArray::registerSpecialUse({Y}, {pA, X});
if(pA != A)
delete pA;
return Y;
}
////////////////////////////////////////////////////////////////////////////
// (X * Y) = Z[0]
NDArray* MmulHelper::dot(const NDArray* X, const NDArray* Y, nd4j::NDArray* Z, const double alpha, const double beta) {
int xLenDim(0), yLenDim(0);
if(!shape::isCommonVector(X->getShapeInfo(), xLenDim))
throw std::runtime_error("MmulHelper::dot cuda: X array must be vector !");
if(!shape::isCommonVector(Y->getShapeInfo(), yLenDim))
throw std::runtime_error("MmulHelper::dot cuda: Y array must be vector !");
if(Z != nullptr && !Z->isScalar())
throw std::runtime_error("MmulHelper::dot cuda: Z array must be scalar !");
const auto length = X->lengthOf();
if(Y->lengthOf() != length)
throw std::runtime_error("MmulHelper::dot cuda: lengths of input vectors are different !");
if(Z == nullptr)
Z = new NDArray(DataTypeUtils::pickPairwiseResultType(X->dataType(), Y->dataType()), X->getContext());
const Nd4jLong incx = X->stridesOf()[xLenDim];
const Nd4jLong incy = Y->stridesOf()[yLenDim];
const auto xType = X->dataType();
const auto yType = Y->dataType();
const auto zType = Z->dataType();
if(!X->isActualOnDeviceSide()) X->syncToDevice();
if(!Y->isActualOnDeviceSide()) Y->syncToDevice();
if(!Z->isActualOnDeviceSide()) Z->syncToDevice();
cudaStream_t* stream = X->getContext()->getCudaStream();
dim3 threadsPerBlock(512);
dim3 blocksPerGrid(1);
if (length > 512)
threadsPerBlock.x = math::nd4j_ceil<double, int>(static_cast<double>(length) / 512);
NDArray::prepareSpecialUse({Z}, {X, Y});
BUILD_TRIPLE_SELECTOR(xType, yType, zType, usualDot, (blocksPerGrid, threadsPerBlock, stream, length, alpha, X->getSpecialBuffer(), incx, Y->getSpecialBuffer(), incy, beta, Z->getSpecialBuffer()), LIBND4J_TYPES, FLOAT_TYPES, FLOAT_TYPES);
auto cudaResult = cudaStreamSynchronize(*stream);
if (cudaResult != 0) throw cuda_exception::build("MmulHelper::dot cuda failed !", cudaResult);
NDArray::registerSpecialUse({Z}, {X, Y});
return Z;
}
BUILD_TRIPLE_TEMPLATE(template void usualGemm, (const dim3 &blocksPerGrid, const dim3 &threadsPerBlock, cudaStream_t *stream, const bool transA, const bool transB, const int M, const int N, const int K, const double alpha, const void* vA, const int lda, const void* vB, const int ldb, const double beta, void* vC, const int ldc), LIBND4J_TYPES, FLOAT_TYPES, FLOAT_TYPES);
BUILD_TRIPLE_TEMPLATE(template void usualGemv, (const dim3 &blocksPerGrid, const dim3 &threadsPerBlock, cudaStream_t *stream, const bool transA, const int M, const int N, const double alpha, const void* vA, const int lda, const void* vB, const int incx, const double beta, void* vC, const int incy), LIBND4J_TYPES, FLOAT_TYPES, FLOAT_TYPES);
BUILD_TRIPLE_TEMPLATE(template void usualDot, (const dim3 &blocksPerGrid, const dim3 &threadsPerBlock, cudaStream_t *stream, const Nd4jLong length, const double alpha, const void* vX, const Nd4jLong incx, const void* vY, const Nd4jLong incy, const double beta, void* vZ), LIBND4J_TYPES, FLOAT_TYPES, FLOAT_TYPES);
}
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