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/*
* some GPU utility functions
* Author: Petros Anastasiadis(panastas@cslab.ece.ntua.gr)
* Use of Unified memory is advised, but not always optimal
*/
void gpu_free(void *gpuptr); /* Free GPU memory*/
void *gpu_alloc(size_t count); /* Allocate 'count' bytes in GPU memory (error safe) */
int copy_to_gpu(const void *host, void *gpu, size_t count); /* Copy 'count' bytes from host to gpu memory (error safe) */
int copy_from_gpu(void *host, const void *gpu, size_t count); /* Copy 'count' bytes from gpu to host memory (error safe) */
void cudaCheckErrors(const char * msg); /* Check GPU for errors */
const char *gpu_get_errmsg(cudaError_t err);
const char *gpu_get_last_errmsg();