MPI_CALL(XBT_PUBLIC(int), MPI_Is_thread_main, (int *flag));
MPI_CALL(XBT_PUBLIC(int), MPI_Abort, (MPI_Comm comm, int errorcode));
MPI_CALL(XBT_PUBLIC(double), MPI_Wtime, (void));
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+MPI_CALL(XBT_PUBLIC(double), MPI_Wtick,(void));
MPI_CALL(XBT_PUBLIC(int), MPI_Address, (void *location, MPI_Aint * address));
MPI_CALL(XBT_PUBLIC(int), MPI_Type_free, (MPI_Datatype * datatype));