[petsc-dev] GMRES with one processor crashes

[Jed Brown]

On Mon, Jan 9, 2012 at 05:23, Alexander Grayver <agrayver at gfz-potsdam.de>wrote:

> I run petsc-dev like that:
> mpirun -n 2 /home/solveTest -ksp_view -ksp_monitor -ksp_converged_reason
> -ksp_monitor_true_residual -log_summary -mat_type mpiaij -ksp_rtol 1.0e-12
>
> [...]

> But just switching to one process (-n 1) makes it crashing:
>

Try removing the "-mat_type mpiaij" part. Note that you can still use
"-mat_type aij". Also note that you should usually use a prefix so that you
are setting the type of a specific matrix instead of setting the type of
all matrices (for which MatSetFromOptions() is called).


>
> [0]PETSC ERROR: ------------------------------**
> ------------------------------**------------
> [0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation,
> probably memory access out of range
>

Please run with valgrind --db-attach=yes (or at least a debugger) to get a
stack trace.
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