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From: chris.neale_at_[hidden]
Date: 2006-08-30 17:03:28


Hello, I am using Open-mpi with Gromacs. We have an 88 node single processor
pentium 4 cluster conected by ethernet and running linux. I want to acheive a
short message tcp maximum length of 512kb. In lam, this would have been a
configure option --with-tcp-short=524288. I am intending to use open-mpi with a
runtime option --mca btl_tcp_eager_limit 524288. Is that the only thing that I
need to do in order to acheive a short message max. length of 512kb?

What about:

btl_tcp_min_send_size
btl_tcp_max_send_size

And how is this affected by:

btl_tcp_min_rdma_size
btl_tcp_max_rdma_size

And should I set btl_openib_use_eager_rdma = 0 if I am not using InfiniBand?

Many thanks.

Chris Neale.