On Wed, Jul 13, 2011 at 15:08, Clemens Domanig <clemens.domanig at uibk.ac.at>wrote:
> The program uses MPI for parallel solving (LU, mumps). > It works fine with all examples that have onyl 5 dof per node and that have > a mixture of 5 and 6 dof per node. > When doing examples that have 6 dof per node this happens: > * when using more than 2 MPI processes everything seems to be fine. > * when using 1 or 2 MPI processes MatAssemblyBegin() never finishes > It just hangs? Can you attach a debugger and get a stack trace? $ gdb -p PID [output from attaching] (gdb) bt full [send this output] -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110713/e38115f4/attachment.htm>
