cuda-gdb Error message

Question

I tried to debug my CUDA application with cuda-gdb but got some weird error.

I set option -g -G -O0 to build my application. I could run my program without

Answer 1

Actually, this issue is only specific to some old NVIDIA GPUs(like "Quadro 400", "GeForce GT220", or "GeForce GT 330M", etc).

On Liam Kim's setup, cuda-gdb should work fine by set environment variable "CUDA_VISIBLE_DEVICES", and let cuda-gdb running on Tesla C2070 GPUs specifically. I.e $export CUDA_VISIBLE_DEVICES=0 (or 2) - the exact CUDA devices index could be found by running cuda sample - "deviceQuery".

And now, this issue has been fixed, the fix would be availble for CUDA developers in the next CUDA release(it will be posted out around early July, 2014).