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: tl...@che.ufl.edu Web: http://ladd.che.ufl.edu
