Hi Rajeev, please use a single support channel only.
Something goes wrong in the second iteration already: num_rows is some crazy number. Is there any chance we can reproduce this issue?
Best regards, Karli On 03/23/2016 02:39 PM, Das, Rajeev 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.
