Error with cudaMemcpy2D
int *img_redd,*img_greend,*img_blued;//d denotes device
int **img_redh,**img_greenh,**img_blueh;// h denotes host
//Initialize+ copy values into the arrays pointed by img_redh,img_greenh etc
// then Copy the values of RGB into host array <here>
//Allocating memory on device below
cudaMallocPitch((void**)&img_redd,&pitch1,img_width*sizeof(int),img_height);
cudaMallocPitch((void**)&img_greend,&pitch2,img_width*sizeof(int),img_height);
cudaMallocPitch((void**)&img_blued,&pitch3,img_width*sizeof(int),img_height);
// copy it to CUDA device
cudaMemcpy2D(img_redd,pitch1,img_redh[0],img_width*sizeof(int),img_width*s开发者_运维百科izeof(int),img_height,cudaMemcpyHostToDevice);
//I even tried with just img_redh above
//Similarly for green and blue
The cudaMallocpitch works fine but it crashes on the cudamemcpy2d line and opens up host_runtime.h and points to
static void __cudaUnregisterBinaryUtil(void)
{
__cudaUnregisterFatBinary(__cudaFatCubinHandle);
}
I feel that the logic behind memory allocation is fine .Any comments what might be causing the crash?
It sounds like you're using a Iliffe vector for a multidimensional array for img_redh
. Try using a regular multidimensional array (int* img_redh = (int*)malloc(img_width*img_height*sizeof(int)
)
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