Re: [OMPI users] Decision map for MPI collective operations

[George Bosilca]

You need access to the source in order to look at the decision maps. They are in ompi/mca/coll/tuned/coll_tuned_decision_fixed.c file.

  george.

On Apr 19, 2008, at 3:41 AM, Andy Georgi wrote:

hello all,


msgsize and/or commsize and ompi constructs a decision map for the
collective on the system. now my question:

where can i find these decision map for my system?

i'm no sysadmin, but i hope there is a way to get this information
anyway ;-).

regards,

andy
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i want to measure the time needed for collective operations on a cluster by using ompi 1.2.5. i read that the algorithm which is used depends on

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