Strange "No such file or directory" error in cuda-gdb

Question

Hello,

I already asked this question in the nvidia forum but never got an answer link.

Every time I try to step into a kernel I get a similar error message to this:

__device_stub__Z10bitreversePj (__par0=0x110000) at 
/tmp/tmpxft_00005d4b_00000000-1_bitreverse.cudafe1.stub.c:10
10    /tmp/tmpxft_00005d4b_00000000-1_bitreverse.cudafe1.stub.c: No such file or directory.
in /tmp/tmpxft_00005d4b_00000000-1_bitreverse.cudafe1.stub.c

I tried to follow the instructions of the cuda-gdb walkthrough by the error stays.

Has somebody a tip what could cause this behaviour?

Answer 1

I think I had such problem once, but can't really remember what was it caused with. Do you use textures in your kernel? In that case you couldn't debug it.

Answer 2

The "device stub" for bitreverse(unsigned int*) (whatever that is) was compiled with debug info, and it was located in /tmp/tmpxft_00005d4b_00000000-1_bitreverse.cudafe1.stub.c (which was likely machine-generated).

The "No such file" error is telling you that that file is not (or no longer) present on your system, but this is not an error; GDB just can't show you the source.

This should not prevent you from stepping further, or from setting breakpoints in other functions and continuing.