[petsc-users] Error "Attempting to use an MPI routine before initializing MPICH" after compiling PETSc with Intel MPI and GCC

[Matthew Knepley]

On Mon, Oct 11, 2021 at 5:24 AM Roland Richter <roland.richter at ntnu.no>
wrote:

> Hei,
>
> I compiled PETSc with Intel MPI (MPICH) and GCC as compiler (i.e. using
> Intel OneAPI together with the supplied mpicxx-compiler). Compilation
> and installation worked fine, but running the tests resulted in the
> error "Attempting to use an MPI routine before initializing MPICH". A
> simple test program (attached) worked fine with the same combination.
>
> What could be the reason for that?
>

Hi Roland,

Can you get a stack trace for this error using the debugger?

  Thanks,

     Matt


> Thanks!
>
> Regards,
>
> Roland Richter
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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