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/*
* Some GPU utility functions for SpMV multiplication
* Author: Petros Anastasiadis(panastas@cslab.ece.ntua.gr)
*/
#include <cuda.h>
#include <stdio.h>
#include <cuda_runtime.h>
#include "gpu_util.h"
const char *gpu_get_errmsg(cudaError_t err)
{
return cudaGetErrorString(err);
}
const char *gpu_get_last_errmsg()
{
return gpu_get_errmsg(cudaGetLastError());
}
void cudaCheckErrors(const char * msg)
{
cudaError_t __err = cudaGetLastError();
if (__err != cudaSuccess) {
printf("\nFatal error: %s (%s)\n", msg, cudaGetErrorString(__err));
exit(1);
}
}
void *gpu_alloc(size_t count)
{
void *ret;
if (cudaMalloc(&ret, count) != cudaSuccess) {
printf("Gpu alloc failed: %s\n", gpu_get_last_errmsg());
exit(1);
}
return ret;
}
void gpu_free(void *gpuptr)
{
cudaFree(gpuptr);
}
int copy_to_gpu(const void *host, void *gpu, size_t count)
{
if (cudaMemcpy(gpu, host, count, cudaMemcpyHostToDevice) != cudaSuccess){
printf("Copy to GPU failed: %s\n", gpu_get_last_errmsg());
exit(1);
}
return 1;
}
int copy_from_gpu(void *host, const void *gpu, size_t count)
{
if (cudaMemcpy(host, gpu, count, cudaMemcpyDeviceToHost) != cudaSuccess){
printf("Copy to Host failed: %s\n", gpu_get_last_errmsg());
exit(1);
}
return 1;
}