From owner-freebsd-hackers Tue Oct 7 08:53:46 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id IAA05591 for hackers-outgoing; Tue, 7 Oct 1997 08:53:46 -0700 (PDT) (envelope-from owner-freebsd-hackers) Received: from mercury.Sun.COM (mercury.Sun.COM [192.9.25.1]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id IAA05585 for ; Tue, 7 Oct 1997 08:53:42 -0700 (PDT) (envelope-from Anthony.Kimball@East.Sun.COM) Received: from East.Sun.COM ([129.148.1.241]) by mercury.Sun.COM (SMI-8.6/mail.byaddr) with SMTP id IAA05139 for ; Tue, 7 Oct 1997 08:54:59 -0700 Received: from suneast.East.Sun.COM by East.Sun.COM (SMI-8.6/SMI-5.3) id LAA17162; Tue, 7 Oct 1997 11:53:09 -0400 Received: from compound.east.sun.com by suneast.East.Sun.COM (SMI-8.6/SMI-SVR4) id LAA05771; Tue, 7 Oct 1997 11:53:08 -0400 Received: (from alk@localhost) by compound.east.sun.com (8.8.7/8.7.3) id LAA26271; Tue, 7 Oct 1997 11:00:02 -0500 (CDT) Date: Tue, 7 Oct 1997 11:00:02 -0500 (CDT) Message-Id: <199710071600.LAA26271@compound.east.sun.com> From: Tony Kimball MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Face: O9M"E%K;(f-Go/XDxL+pCxI5*gr[=FN@Y`cl1.Tn Reply-To: anthony.kimball@East.Sun.COM To: hackers@freebsd.org Subject: Re: Building parallel "Beowulf-style" supercomputers with FreeBSD X-Mailer: VM 6.33 under 19.14 XEmacs Lucid Sender: owner-freebsd-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk The principal software bit missing from BSD is coscheduling. I believe the PGHPF compiler for Linux should suffice to compile HPFortran code for a cluster, but without synchronous scheduling of the related processes of distinct cluster nodes, network performance will stink unless you restrict yourself to running one application at a time.