Hello, What version of CUDA is installed? OS? Can you send your example file?
Thanks, Steve On Wed, Mar 23, 2016 at 9:39 AM, Das, Rajeev <[email protected]> wrote: > UNRESTRICTED / ILLIMITÉE > > Hi: > > > > The scenario that I considered involves a structured grid of size 32 x 32 > x 32 (using Pflotran here). When I used the bcgs solver and the > preconditioner jacobi, there were no issues, but when the preconditioner > sacusp was used I received the following error: > > > > terminate called after throwing an instance of > 'thrust::system::system_error' > > what(): function_attributes(): after cudaFuncGetAttributes: an illegal > memory access was encountered. > > > > I am attaching the screen shots of my debugger (idb) that will provide > some detail regarding the source of this error. My Petsc configuration is > > > > --download-mpich=yes --with-cc=gcc --with-cxx=g++ --with-fc=gfortran > --with-shared-libraries=0 --with-debugging=1 --with-valgrind=1 > --download-parmetis=yes --download-metis=yes --download-hypre=yes > --download-fblaslapack=yes --with-c2html=0 --with-cuda=1 --with-cusp=1 > --with-thrust=1 --with-64-bit-indices=1 > > > > I have to use 64 bit indices, if I avoid it, I receive out of memory > issues. Machines used are Intel Xeon E5-2620 and Tesla K20c card having the > compute capability of 3.5. When I reduced the grid size to 16 x 16 x 16 I > no more receive the above error with sacusp. > > > > Can you point me what could be the problem here. > > > > > > Regards, > > > > Rajeev Das. >
