cuda-gdb Error message -


i tried debug cuda application cuda-gdb got weird error.

i set option -g -g -o0 build application. run program without cuda-gdb, didn't correct result. hence decided use cuda-gdb, however, got following error message while running program cuda-gdb

error: failed read valid warps mask (dev=1, sm=0, error=16).

what means? why sm=0 , what's meaning of error=16?

update 1: tried use cuda-gdb cuda samples, fails same problem. installed cuda 6.0 toolkit followed instruction of nvidia. problem of system?

update 2:

  • os - centos 6.5
  • gpu
    • 1 quadro 400
    • 2 tesla c2070
    • i'm using 1 gpu program, i've got same bug message gpu selected
  • cuda version - 6.0
  • gpu driver
    • nvrm version: nvidia unix x86_64 kernel module 331.62 wed mar 19 18:20:03 pdt 2014
    • gcc version: gcc version 4.4.7 20120313 (red hat 4.4.7-4) (gcc)

update 3: tried more information in cuda-gdb, got following results

(cuda-gdb) info cuda devices error: failed read valid warps mask (dev=1, sm=0, error=16). (cuda-gdb) info cuda sms focus not set on active cuda kernel. (cuda-gdb) info cuda lanes focus not set on active cuda kernel. (cuda-gdb) info cuda kernels no cuda kernels. (cuda-gdb) info cuda contexts no cuda contexts.

actually, issue specific old nvidia gpus(like "quadro 400", "geforce gt220", or "geforce gt 330m", etc).

on liam kim's setup, cuda-gdb should work fine set environment variable "cuda_visible_devices", , let cuda-gdb running on tesla c2070 gpus specifically. i.e $export cuda_visible_devices=0 (or 2) - exact cuda devices index found running cuda sample - "devicequery".

and now, issue has been fixed, fix availble cuda developers in next cuda release(it posted out around july, 2014).


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