I can't set the breakpoint in kernal under EmuDebug mode

Accelerated Computing CUDA CUDA Programming and Performance
1

I am a rookie in cuda programming and develop the cuda program under the EmuDebug mode.

When I set

the breakpoint in kernel doesn’t work, but if I change to

the breakpoint works!

I don’t know what’s the problem. Are there any hardware limitations in the EmuDebug mode (I have no cuda CPU in my development environment)

Thanks very very much

2

You can’t launch 3D grids.

3

Doesn’t dimBlock mean the dimension of threads in one block?

I set “BLOCK_SIZE” to 16. When I set dimBlock(BLOCK_SIZE, BLOCK_SIZE, 2), the breakpoint in kernel does work. But if I set dimBlock(BLOCK_SIZE, BLOCK_SIZE, 4) or something > 4, the breakpoint in kernel doesn’t work.

My development environment has no CUDA enabled GPU. I don’t know what the problem is ?

Thanks very very much…

4

Can’t have more than 512 threads in a block, either.