Hi Mohsen, On Wed, Sep 5, 2012 at 9:53 PM, mohsen jadidi <mohsen.jad...@gmail.com> wrote: > pycuda._driver.LaunchError: cuMemcpyDtoH failed: launch failed > PyCUDA WARNING: a clean-up operation failed (dead context maybe?) > cuMemFree failed: launch failed > > what would be the reason ?
It means that the operation before that (kernel execution) crashed and invalidated the context. Most probably, there was some read/write operation to the wrong memory address. You will have to look inside the kernel that gets executed inside gpu_devdeveigenvalues(), or contact its developer (do not forget to provide minimal working example that reproduces the bug). _______________________________________________ PyCUDA mailing list PyCUDA@tiker.net http://lists.tiker.net/listinfo/pycuda
