[petsc-users] Fatal error in MPI_Allreduce: Error message texts are not available[cli_9]: aborting job:

[Jed Brown]

On Fri, Aug 5, 2011 at 16:41, Dominik Szczerba <dominik at itis.ethz.ch> wrote:

> I did not yet
> valgrind etc. because I am in a desperate need to fix it quickly.
>

It's usually harder to fix the problem by guessing than it is if you use
tools designed to help you. In this case, I suspect that different processes
are calling VecAssemblyBegin() and MatAssemblyBegin() with different
arguments or in a different order.
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