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From: Tony Ladd (ladd_at_[hidden])
Date: 2006-10-27 14:56:22


George

Thanks for the info. When you say "highly optimized" do you algorithmically,
tuning, or both? In particular I wonder if OMPI optimized collectives use
the divide and conquer strategy to maximize network bandwidth.

Sorry to be dense but I could not find documanetation on how to access the
optimized collectives. I would be willing to fiddle with the parameters a
bit by hand if I had some guidance as to how to set things and what I might
vary.

The optimization I was talking about (divide and conquer) would work better
than the basic strategy regardless of network; only message size might have
some effect.

Thanks

Tony

-------------------------------
Tony Ladd
Chemical Engineering
University of Florida
PO Box 116005
Gainesville, FL 32611-6005

Tel: 352-392-6509
FAX: 352-392-9513
Email: tladd_at_[hidden]
Web: http://ladd.che.ufl.edu