mirror of
https://github.com/QuantumPackage/qp2.git
synced 2024-07-23 11:17:39 +02:00
328 lines
9.1 KiB
C
328 lines
9.1 KiB
C
#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <cublas_v2.h>
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#include <cuda_runtime.h>
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/* Generic functions */
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int gpu_ndevices() {
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int ngpus;
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cudaGetDeviceCount(&ngpus);
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return ngpus;
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}
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void gpu_set_device(int32_t igpu) {
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cudaSetDevice(igpu);
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}
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/* Allocation functions */
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void gpu_allocate(void** ptr, const int64_t size) {
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size_t free, total;
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cudaError_t rc = cudaMemGetInfo( &free, &total );
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if (rc != cudaSuccess) {
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free = INT64_MAX;
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}
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/* Use managed memory if it does not fit on the GPU */
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if (size < free && size < total/2) {
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// rc= cudaMalloc(ptr, size);
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rc = cudaMallocManaged(ptr, size, cudaMemAttachGlobal);
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} else {
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rc = cudaMallocManaged(ptr, size, cudaMemAttachGlobal);
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}
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assert (rc == cudaSuccess);
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}
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void gpu_deallocate(void** ptr) {
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assert (*ptr != NULL);
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cudaFree(*ptr);
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*ptr = NULL;
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}
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/* Memory transfer functions */
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void gpu_upload(const void* cpu_ptr, void* gpu_ptr, const int64_t n) {
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cudaMemcpy (gpu_ptr, cpu_ptr, n, cudaMemcpyHostToDevice);
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}
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void gpu_download(const void* gpu_ptr, void* cpu_ptr, const int64_t n) {
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cudaMemcpy (cpu_ptr, gpu_ptr, n, cudaMemcpyDeviceToHost);
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}
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void gpu_copy(const void* gpu_ptr_src, void* gpu_ptr_dest, const int64_t n) {
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cudaMemcpy (gpu_ptr_dest, gpu_ptr_src, n, cudaMemcpyDeviceToDevice);
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}
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/* Streams */
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void gpu_stream_create(void** ptr) {
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cudaStream_t stream;
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cudaError_t rc = cudaStreamCreate(&stream);
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assert (rc == cudaSuccess);
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*ptr = (void*) stream;
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}
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void gpu_stream_destroy(void** ptr) {
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assert (*ptr != NULL);
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cudaError_t rc = cudaStreamDestroy( (cudaStream_t) *ptr);
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assert (rc == cudaSuccess);
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*ptr = NULL;
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}
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void gpu_set_stream(void** handle, void** stream) {
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cublasSetStream( (cublasHandle_t) *handle, (cudaStream_t) *stream);
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}
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void gpu_synchronize() {
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cudaDeviceSynchronize();
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}
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/* BLAS functions */
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void gpu_blas_create(void** handle) {
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cublasHandle_t cublas_handle;
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cublasStatus_t rc = cublasCreate(&cublas_handle);
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assert (rc == CUBLAS_STATUS_SUCCESS);
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*handle = (void*) cublas_handle;
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}
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void gpu_blas_destroy(void** handle) {
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assert (*handle != NULL);
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cublasStatus_t rc = cublasDestroy( (cublasHandle_t) *handle);
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assert (rc == CUBLAS_STATUS_SUCCESS);
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*handle = NULL;
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}
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void gpu_ddot(void** handle, const int64_t n, const double* x, const int64_t incx, const double* y, const int64_t incy, double* result) {
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assert (*handle != NULL);
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/* Convert to int32_t */
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int32_t n_, incx_, incy_;
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n_ = (int32_t) n;
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incx_ = (int32_t) incx;
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incy_ = (int32_t) incy;
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/* Check for integer overflows */
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assert ( (int64_t) n_ == n );
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assert ( (int64_t) incx_ == incx);
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assert ( (int64_t) incy_ == incy);
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cublasDdot((cublasHandle_t) *handle, n_, x, incx_, y, incy_, result);
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}
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void gpu_sdot(void** handle, const int64_t n, const float* x, const int64_t incx, const float* y, const int64_t incy, float* result) {
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assert (*handle != NULL);
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/* Convert to int32_t */
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int32_t n_, incx_, incy_;
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n_ = (int32_t) n;
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incx_ = (int32_t) incx;
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incy_ = (int32_t) incy;
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/* Check for integer overflows */
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assert ( (int64_t) n_ == n );
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assert ( (int64_t) incx_ == incx);
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assert ( (int64_t) incy_ == incy);
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cublasSdot((cublasHandle_t) *handle, n_, x, incx_, y, incy_, result);
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}
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void gpu_dgemv(void** handle, const char transa, const int64_t m, const int64_t n, const double alpha,
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const double* a, const int64_t lda, const double* x, const int64_t incx, const double beta, double* y, const int64_t incy) {
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assert (*handle != NULL);
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/* Convert to int32_t */
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int32_t m_, n_, lda_, incx_, incy_;
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m_ = (int32_t) m;
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n_ = (int32_t) n;
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lda_ = (int32_t) lda;
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incx_ = (int32_t) incx;
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incy_ = (int32_t) incy;
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/* Check for integer overflows */
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assert ( (int64_t) m_ == m );
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assert ( (int64_t) n_ == n );
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assert ( (int64_t) lda_ == lda );
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assert ( (int64_t) incx_ == incx);
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assert ( (int64_t) incy_ == incy);
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cublasOperation_t transa_ = CUBLAS_OP_N;
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if (transa == 'T' || transa == 't') transa_ = CUBLAS_OP_T;
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cublasDgemv((cublasHandle_t) *handle, transa_, m_, n_, &alpha, a, lda_, x, incx_, &beta, y, incy_);
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}
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void gpu_sgemv(void** handle, const char transa, const int64_t m, const int64_t n, const float alpha,
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const float* a, const int64_t lda, const float* x, const int64_t incx, const float beta, float* y, const int64_t incy) {
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assert (*handle != NULL);
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/* Convert to int32_t */
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int32_t m_, n_, lda_, incx_, incy_;
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m_ = (int32_t) m;
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n_ = (int32_t) n;
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lda_ = (int32_t) lda;
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incx_ = (int32_t) incx;
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incy_ = (int32_t) incy;
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/* Check for integer overflows */
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assert ( (int64_t) m_ == m );
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assert ( (int64_t) n_ == n );
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assert ( (int64_t) lda_ == lda );
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assert ( (int64_t) incx_ == incx);
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assert ( (int64_t) incy_ == incy);
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cublasOperation_t transa_ = CUBLAS_OP_N;
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if (transa == 'T' || transa == 't') transa_ = CUBLAS_OP_T;
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cublasSgemv((cublasHandle_t) *handle, transa_, m_, n_, &alpha, a, lda_, x, incx_, &beta, y, incy_);
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}
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void gpu_dgemm(void** handle, const char transa, const char transb, const int64_t m, const int64_t n, const int64_t k, const double alpha,
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const double* a, const int64_t lda, const double* b, const int64_t ldb, const double beta, double* c, const int64_t ldc) {
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assert (*handle != NULL);
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/* Convert to int32_t */
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int32_t m_, n_, k_, lda_, ldb_, ldc_;
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m_ = (int32_t) m;
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n_ = (int32_t) n;
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k_ = (int32_t) k;
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lda_ = (int32_t) lda;
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ldb_ = (int32_t) ldb;
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ldc_ = (int32_t) ldc;
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/* Check for integer overflows */
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assert ( (int64_t) m_ == m );
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assert ( (int64_t) n_ == n );
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assert ( (int64_t) k_ == k );
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assert ( (int64_t) lda_ == lda);
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assert ( (int64_t) ldb_ == ldb);
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assert ( (int64_t) ldc_ == ldc);
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cublasOperation_t transa_ = CUBLAS_OP_N;
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cublasOperation_t transb_ = CUBLAS_OP_N;
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if (transa == 'T' || transa == 't') transa_ = CUBLAS_OP_T;
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if (transb == 'T' || transb == 't') transb_ = CUBLAS_OP_T;
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cublasDgemm((cublasHandle_t) *handle, transa_, transb_, m_, n_, k_, &alpha, a, lda_, b, ldb_, &beta, c, ldc_);
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}
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void gpu_sgemm(void** handle, const char transa, const char transb, const int64_t m, const int64_t n, const int64_t k, const float alpha,
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const float* a, const int64_t lda, const float* b, const int64_t ldb, const float beta, float* c, const int64_t ldc) {
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assert (*handle != NULL);
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/* Convert to int32_t */
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int32_t m_, n_, k_, lda_, ldb_, ldc_;
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m_ = (int32_t) m;
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n_ = (int32_t) n;
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k_ = (int32_t) k;
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lda_ = (int32_t) lda;
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ldb_ = (int32_t) ldb;
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ldc_ = (int32_t) ldc;
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/* Check for integer overflows */
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assert ( (int64_t) m_ == m );
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assert ( (int64_t) n_ == n );
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assert ( (int64_t) k_ == k );
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assert ( (int64_t) lda_ == lda);
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assert ( (int64_t) ldb_ == ldb);
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assert ( (int64_t) ldc_ == ldc);
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cublasOperation_t transa_ = CUBLAS_OP_N;
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cublasOperation_t transb_ = CUBLAS_OP_N;
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if (transa == 'T' || transa == 't') transa_ = CUBLAS_OP_T;
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if (transb == 'T' || transb == 't') transb_ = CUBLAS_OP_T;
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cublasSgemm((cublasHandle_t) *handle, transa_, transb_, m_, n_, k_, &alpha, a, lda_, b, ldb_, &beta, c, ldc_);
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}
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void gpu_dgeam(void** handle, const char transa, const char transb, const int64_t m, const int64_t n, const double alpha,
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const double* a, const int64_t lda, const double beta, const double* b, const int64_t ldb, double* c, const int64_t ldc) {
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assert (*handle != NULL);
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/* Convert to int32_t */
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int32_t m_, n_, lda_, ldb_, ldc_;
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m_ = (int32_t) m;
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n_ = (int32_t) n;
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lda_ = (int32_t) lda;
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ldb_ = (int32_t) ldb;
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ldc_ = (int32_t) ldc;
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/* Check for integer overflows */
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assert ( (int64_t) m_ == m );
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assert ( (int64_t) n_ == n );
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assert ( (int64_t) lda_ == lda);
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assert ( (int64_t) ldb_ == ldb);
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assert ( (int64_t) ldc_ == ldc);
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cublasOperation_t transa_ = CUBLAS_OP_N;
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cublasOperation_t transb_ = CUBLAS_OP_N;
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if (transa == 'T' || transa == 't') transa_ = CUBLAS_OP_T;
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if (transb == 'T' || transb == 't') transb_ = CUBLAS_OP_T;
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cublasDgeam((cublasHandle_t) *handle, transa_, transb_, m_, n_, &alpha, a, lda_, &beta, b, ldb_, c, ldc_);
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}
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void gpu_sgeam(void** handle, const char transa, const char transb, const int64_t m, const int64_t n, const float alpha,
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const float* a, const int64_t lda, const float beta, const float* b, const int64_t ldb, float* c, const int64_t ldc) {
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assert (*handle != NULL);
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/* Convert to int32_t */
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int32_t m_, n_, lda_, ldb_, ldc_;
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m_ = (int32_t) m;
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n_ = (int32_t) n;
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lda_ = (int32_t) lda;
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ldb_ = (int32_t) ldb;
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ldc_ = (int32_t) ldc;
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/* Check for integer overflows */
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assert ( (int64_t) m_ == m );
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assert ( (int64_t) n_ == n );
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assert ( (int64_t) lda_ == lda);
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assert ( (int64_t) ldb_ == ldb);
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assert ( (int64_t) ldc_ == ldc);
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cublasOperation_t transa_ = CUBLAS_OP_N;
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cublasOperation_t transb_ = CUBLAS_OP_N;
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if (transa == 'T' || transa == 't') transa_ = CUBLAS_OP_T;
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if (transb == 'T' || transb == 't') transb_ = CUBLAS_OP_T;
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cublasSgeam((cublasHandle_t) *handle, transa_, transb_, m_, n_, &alpha, a, lda_, &beta, b, ldb_, c, ldc_);
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}
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