Pointer arithmetic from host

[JuanLG]

Hi, my question is quite simple.

float * p = (float*) malloc(size * sizeof(float));
float * dev_p;
cudaMalloc( (void**) &dev_p, size * sizeof(float) );
cudaMemcpy( dev_p, p, size * sizeof(float), cudaMemcpyHostToDevice );

Now, if I have a kernel like this:

global void kernel_foo (float* p){
}

Can i call it this way from host?

int offset = 2; //for example
kernel_foo<<<dimGrid, dimBlocks>>> (dev_p + offset);

Can i use pointer arithmetic from host with a “device pointer”?

[tera]

Yes. Variables on host and device have the same size to make this possible (unless you explicitly compile device code differently from host code).)