CODEWITHSUNDEEP
cuda
user2684645
user2684645

Reputation: 499

CUDA stop working after error

After I had the following error from my CUDA program: 

CUDA error at scan.cu:231 code=4(cudaErrorLaunchFailure) 
"cudaMemcpy(odata, g_odata,   sizeof(int) * N, cudaMemcpyDeviceToHost)"

I fixed it and recompiled the program, but the program didn't proceed. It stopped at the command line prompt and I had to kill it using control+C.

After I rebooted the machine, It ran successfully.

How can I fix this without rebooting?

I'm using Ubuntu 12.04 with CUDA 5.5 gtx550ti boost

Thanks!

Upvotes: 0

Views: 647

Answers (1)

Emmet
Emmet

Reputation: 6391

I've had similar problems where CUDA simply fails to work at all after an error, but started working again after I reload the kernel module. I have no explanation for why this happens, but I have a script that reloads the kernel module:

https://github.com/EmmetCaulfield/linux-misc/blob/master/usr/local/sbin/cuda-init

Upvotes: 1

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