Hello again,
first, i would like to apologize for sending so
many e-mails. This will (probably) be the last
additional info i send, concerning the problem which
i've described earlier.
I have tried to call many MPI functions before
calling the MPI_Comm_split function (this is where the
errors occur). It seems that the only family of
functions that cause the problem is the communicator
construction one, meaning MPI_Comm_split,
MPI_Comm_create, MPI_Comm_dup, MPI_Comm_spawn,
MPI_Intercomm_create, MPI_Intercomm_merge (i have not
tested the last two, since i could not create two
intracommunicators from MPI_COMM_WORLD). All the other
functions (p2p, collective communication, ...) work
correctly. Furthermore, when i test the communicator
construction functions on small test programs they
work just fine.
Thank you again and sorry for the inconvenience,
Paul Polydoras,
University of Athens, Department of Informatics and
Telecommunications, Parallel Lab.
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