starpu-max/julia/src/blas_wrapper.c

/* StarPU --- Runtime system for heterogeneous multicore architectures.
 *
 * Copyright (C) 2020       Université de Bordeaux, CNRS (LaBRI UMR 5800), Inria
 *
 * StarPU is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or (at
 * your option) any later version.
 *
 * StarPU is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * See the GNU Lesser General Public License in COPYING.LGPL for more details.
 */
#include <starpu.h>
#include <blas.h>

#if defined(STARPU_ATLAS) || defined(STARPU_OPENBLAS) || defined(STARPU_MKL)
void julia_saxpy_cpu_codelet(void *descr[], void *arg)
{
	float alpha = *((float *)arg);

	unsigned n = STARPU_VECTOR_GET_NX(descr[0]);

	float *block_x = (float *)STARPU_VECTOR_GET_PTR(descr[0]);
	float *block_y = (float *)STARPU_VECTOR_GET_PTR(descr[1]);

	STARPU_SAXPY((int)n, alpha, block_x, 1, block_y, 1);
}
#endif

#ifdef STARPU_USE_CUDA

#include <starpu_cublas_v2.h>

void julia_saxpy_cuda_codelet(void *descr[], void *arg)
{
	float alpha = *((float *)arg);

	unsigned n = STARPU_VECTOR_GET_NX(descr[0]);

	float *block_x = (float *)STARPU_VECTOR_GET_PTR(descr[0]);
	float *block_y = (float *)STARPU_VECTOR_GET_PTR(descr[1]);

	cublasStatus_t status = cublasSaxpy(starpu_cublas_get_local_handle(), (int)n, &alpha, block_x, 1, block_y, 1);
	if (status != CUBLAS_STATUS_SUCCESS)
		STARPU_CUBLAS_REPORT_ERROR(status);
}
#endif