[OMPI users] fresh benchmarks for "alltoall"

2006-02-23 Thread Konstantin Kudin
Hi all, I retested the very recent trunk with the skampi 4.1. The "alltoall" works quite nicely up to 7 dual Opterons, whereas bunch of isend+irecv's choke. There appear to be some "special" effects related to the 1Gbit setup we are using (problems with broadcom adapters?), and unless there is a

Re: [OMPI users] fresh benchmarks for "alltoall"

2006-02-23 Thread Graham E Fagg
Thanks Konstantin, we are in the process of adding 3 more alltoall variants plus two additional alltoallv methods by midweek next week, so hopefully we can find the method that works best for your network. (two of the new methods do slightly different request management and communication order

Re: [OMPI users] fresh benchmarks for "alltoall"

2006-02-25 Thread Jeff Squyres
On Feb 23, 2006, at 1:59 PM, Konstantin Kudin wrote: What is the approximate time frame for officially releasing version 1.1 ? High performance "alltoall" will be of great use for a whole bunch of packages where the most challenging parallel part is distributed FFTs, which usually rely on "allt