Running program standalone works fine but using cuda-memcheck gives errors

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi,

I tried using cuda-memcheck to test my program, it gives me many errors and no correct outputs.

But if I just run my program standalone as usual, everything seems fine and the output is always correct.

Can you please tell me why?

Thanks

2

With no other facts or code, we can only guess.

But the best guess is your code is buggy. It’s especially common for a race bug to show up when you turn on debugging or memcheck since those usually affect instruction and/or block scheduling, exposing the bug.