Newsgroups: comp.parallel.mpi
From: Francis Brian O'Carroll <ocarroll@trc.rwcp.or.jp>
Subject: Re: MPICH x LAM performance
Organization: Tsukuba Research Center, Real World Computing Partnership, JAPAN
Date: Mon, 21 Apr 1997 15:36:28 +0900
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Message-ID: <335B0AEC.41C67EA6@trc.rwcp.or.jp>

When using MPICH over fast TCP/IP networks, such as Myrinet
and fast ethernet put this in your environment (on each machine,
in your startup .cshrc file or what ever)

	setenv P4_SOCKBUFSIZE 52000

See the source to see where it is used (I think it's still there
in 1.0.14)