Is there a method to print out something inside CUDA program?

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi,

I want to debug CUDA program, coz I’m wondering if the array copied from host to device was changed.
Is there any method to print the array out so that I can see it?

Thanks,
Yuping

2

If you compile in emulation mode then yes, you can just use printf. In Debug or Release mode, when the code is really executed on the GPU, no, you can’t.

3

Thanks, Big Mac!