BG/P is such an ancient machine, that we don't even remember anymore, unfortunately. You might be able to pull out the old releases of mpich (the ones where there used to be a dcmfd device in the src/mpid directory), and check. -- Pavan

On Mar 1, 2015, at 6:36 PM, Khalid Hasanov <[email protected]> wrote:

Hello,

First of all, I am not sure if this group is the right place for this question. If not I apologize for asking unrelated question.

I read two papers about optimizing MPI collective communications on BG/L and BG/P. (Optimization of MPI Collective Communication on BlueGene/L Systems and MPI Collective Communications on The Blue Gene/P Supercomputer: Algorithms and Optimizations respectively). However, these two papers do not mention anything about MPI scatter and gather operations, I wonder if these two collective operations have been optimized for BlueGene or they use exactly the same algorithms from MPICH. Any reference appreciated.

Best regards, Khalid _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

-- Pavan Balaji ✉️ http://www.mcs.anl.gov/~balaji _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss