On Thu, Jun 2, 2016 at 11:56 AM, Anna Kalogirou <a.kalogirou@leeds.ac.uk> wrote:

Dear all,

I am trying to run a code which returns the following error, before even entering the time loop:

[0]PETSC ERROR: ------------------------------------------------------------------------
[0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, probably memory access out of range
[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger
[0]PETSC ERROR: or see http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind
[0]PETSC ERROR: or try http://valgrind.org on GNU/linux and Apple Mac OS X to find memory corruption errors
[0]PETSC ERROR: configure using --with-debugging=yes, recompile, link, and run
[0]PETSC ERROR: to get more information on the crash.
--------------------------------------------------------------------------
MPI_ABORT was invoked on rank 0 in communicator MPI_COMM_WORLD
with errorcode 59.

NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.
You may or may not see output from other processes, depending on
exactly when Open MPI kills them.
--------------------------------------------------------------------------

I tracked down the problem and I found that it is caused by the following:
Matrix = assemble(u*v*dx).M.handle

where u is a trial and v is a test function.

Can any of you help with what might be the issue here?

Thank you,

Anna.

--

Dr Anna Kalogirou
Research Fellow
School of Mathematics
University of Leeds

http://www1.maths.leeds.ac.uk/~matak/

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