Cuda memcheck for ptx file

Accelerated Computing CUDA CUDA Programming and Performance
#1

When I use cuda-memcheck with my application, you get this result.What does it mean?

========= CUDA-MEMCHECK
========= Error: process didn’t terminate successfully
========= ERROR SUMMARY: 0 errors

and this with key – tool racecheck :

========= CUDA-MEMCHECK
========= Error: process didn’t terminate successfully
========= RACECHECK SUMMARY: 0 hazards displayed (0 errors, 0 warnings)

#2

It usually means your application process didn’t terminate successfully. For example, if your application hits a seg fault, you might see something like this if you ran cuda-memcheck on it. You should get rid of all abnormal terminations of your host code before trying to use cuda-memcheck.

You can also read the cuda-memcheck documentation:

http://docs.nvidia.com/cuda/cuda-memcheck/index.html#introduction

#3

What mean “hits a seg fault”
To run kernel i use this command:

cuLaunchGrid(CudaFunction, blocktotal, 1)
cuCtxSynchronize()

from kernel exit i use PTX command: exit or ret.uni

What exactly is wrong?

#4

You haven’t provided enough information to diagnose your issue. A few lines of output from cuda-memcheck is not enough to say what exactly is wrong with your code.

If you don’t know what “seg fault” is, try googling “seg fault”.

cuda-memcheck here is objecting to a problem in your host code, not anything you are doing in device code.

And no, I can’t say exactly what that problem is in your host code, based on what you have provided.

#5

This problem relates to the host code, which is associated with the kernel or is it just an exit code of the program as a whole?

#6

Wouldn’t you be able to verify this with a trivial test?

What exit code is your host code returning upon termination?

Try making it return a 0 exit code, and see if it affects that observation.