Hi!
OpenMPI 1.3.3 comes with a range of algorithms for MPI_Allgather(), but I have not been able to
find out how to check which algorithms is actually used.
>From the following message on the list I got an idea about how to select the algoritm by hand
http://www.open-mpi.org/community/lists/users/2008/10/6847.php,
but I should like to be able to find out at runtime which algorithm Open MPI has chosen.
BTW, is one algorithm chosen the first time MPI_Allgather() is called, or is a new algorithm
chosen for every call based on message properties?
Best regards,
Hans
--
Dr. Hans Ekkehard Plesser
Associate Professor
Dept. of Mathematical Sciences and Technology
Norwegian University of Life Sciences
Phone +47 6496 5467
Fax +47 6496 5401
Email hans.ekkehard.plesser_at_[hidden]
Home http://arken.umb.no/~plesser
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