Error in executing parallelde​mo_gpu_ben​chmark : An unexpected error occurred during CUDA execution. The CUDA error was: unspecified launch failure

2017 12 24
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更新时间：2017 12 26
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Hi, I'm Using a GeForce GTX 1050 GPU. when I run paralleldemo_gpu_benchmark in MATLAB R2017b,everything is OK till the "Achieved peak read+write speed on the host" part but when it reaches the CUDA part, I get the following error :
An unexpected error occurred during CUDA execution. The CUDA error was:
unspecified launch failure
Error in parallel.internal.gpu.timeit
Error in gputimeit (line 66)
t = parallel.internal.gpu.timeit(f, num_outputs);
Error in paralleldemo_gpu_benchmark (line 169)
mmTimesGPU(ii) = gputimeit(@() A*B);
Whats wrong? Thanks in advance.

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Matt J
Matt J 2017-12-24

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Possibly a time-out issue? See here for more info.

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Bob Khosh
Bob Khosh 2017-12-24
Thanks, I’ll try to disable timeout and run the code asap.
Bob Khosh
Bob Khosh 2017-12-25
Thanks a lot ... The script ran without any errors ... but i'm a bit concerned about hardware issues ... is it possible that this change harm my device in any way? Is it OK to keep this option disabled?
Joss Knight
Joss Knight 2017-12-26
The downside of disabling the time-out is that your CUDA kernels can lock up your graphics and make your entire system unresponsive. Most CUDA programmers are fine with this, but each to their own really. You can instead just set the time-out to something very long like 30 seconds (TdrDelay).

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