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Subject: [OMPI users] question about algorithms for collective communication
From: George Markomanolis (george_at_[hidden])
Date: 2009-08-23 07:59:27


Dear all,

I am trying to figure out the algorithms that are used for some
collective communications (allreduce, bcast, alltoall). Is there any
document to explain which algorithms are used? For example I would like
to know exactly how the command allreduce is analyzed to send and receive.

Thanks a lot,
Best regards,
George Markomanolis

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