Dear Tyler, Please send requests like this to the appropriate mailing list.
Thanks! Andreas Tyler Buresh <bures...@umn.edu> writes: > I hope you’re having a great week. If you don’t mind, I’m eager to get your > advice on a PyCUDA issue I’m having, as it seems like you might be best > person to ask. > > As part of a research project at the University of Minnesota, I have been > helping write algorithms using PyCUDA designed to be run on a GPU. I’ve run > into a problem that I have not been able to resolve. > > The following error is thrown when transferring data from GPU memory back > to CPU memory when the input matrix has dimensions larger than 1,000 x > 1,000: > > pycuda._driver.LogicError: cuMemcpyDtoH failed: an illegal memory access > was encountered > PyCUDA WARNING: a clean-up operation failed (dead context maybe?) > cuMemFree failed: an illegal memory access was encountered > > The code executes without errors on smaller matrices and produces correct > results. Given the relatively small matrix size, it doesn't seem like > memory should be an issue. Have you ever seen an error like this? > > If it helps, the code can be found here: > https://github.com/tyburesh/Forest/tree/tyler_branch > > I understand you are likely tremendously busy, so any advice or pointers > would be tremendously appreciated. Thank you for your time. > > Best, > Tyler Buresh -- Andreas Kloeckner Room 4318 (Siebel Center), University of Illinois at Urbana-Champaign https://andreask.cs.illinois.edu/aboutme/ +1-217-244-6401
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