the following code exposes a problem we are experiencing with our OpenMPI
My colleague Moritz Hanke isolated the problem to an interaction of
MPI_Type_create_struct with a previous MPI_Type_dup. When MPI_Type_dup on line
67 of the example is replaced with a straight assignment of MPI_INT to sends,
the problem goes away.
We are using a patched version of OpenMPI which includes the changes from r28319.
Regards, Thomas Jahns
DKRZ GmbH, Department: Application software
Email: Thomas Jahns <jahns_at_[hidden]>