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

[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

[OMPI users] mpirun hangs

2006-02-23 Thread Emanuel Ziegler
Hi! I finally installed OpenMPI 1.0.2-a7 with libibverbs-1.0-rc5 and libmthca-1.0-rc5 on Debian sarge with kernel 2.6.15 (from www.backports.org) in order to use InfiniBand. While InfiniBand seems to be working (ping with IPoIB works perfectly), the mpirun/orterun command causes trouble using rsh