FS#267 MPI exit with error: MPI_Op_free after MPI_FINALIZE
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Description
Some tests exit with an MPI error. The cause of this problem is unknown to me. It happens for example in decoupled/test_3d2p:
8: *** The MPI_Op_free() function was called after MPI_FINALIZE was invoked.
8: *** This is disallowed by the MPI standard.
8: *** Your MPI job will now abort.
8: [linux:31588] Local abort after MPI_FINALIZE completed successfully; not able to aggregate error messages, and not able to guarantee that all other processes were killed!
8: Return code: 1
The code does not run in parallel, maybe it is an ALUGrid issue?!