Hi, On Tuesday, February 13, 2018 at 8:55:34 PM UTC-5, Daipayan Sarkar wrote: > > At ~ 48% I get the following error message: > > *error: **"PETSc was configured with MPICH but now appears to be > compiling using a non-MPICH mpi.h"* > The problem is that you are mixing two different versions of MPI and you are not allowed to do that. You have told petsc to install mpich (--download-mpich) but you probably already have another mpi on your system. I would advise you to reinstall petsc without the option --download-mpich.
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