A blind guess: did you use Intel compiler? If so, there is/was an error leading to SIGSEGV _in Open MPI itselv_.
http://www.open-mpi.org/community/lists/users/2012/01/18091.phpIf the SIGSEGV arise not in OpenMPI but in application itself it may be a programming issue.. In any case, more precisely answer are impossible without seeing any codes snippet and/or logs.
Best, Paul Anas Al-Trad wrote:
Dear people, In my application, I have the segmentation fault of Integer Divide-by-zero when calling MPI_cart_sub routine. My program is as follows, I have 128 ranks, I make a new communicator of the first 96 ranks via MPI_Comm_creat. Then I create a grid of 8X12 by calling MPI_Cart_create. After creating the grid if I call MPI_Cart_sub then I have that error.This error happens also when I use a communicator of 24 ranks and create a grid of 4X6. Can you please help me in solving this?Regards, Anas ------------------------------------------------------------------------ _______________________________________________ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users
-- Dipl.-Inform. Paul Kapinos - High Performance Computing, RWTH Aachen University, Center for Computing and Communication Seffenter Weg 23, D 52074 Aachen (Germany) Tel: +49 241/80-24915
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