Newsgroups: comp.parallel.pvm
From: roman pollak <romanp@webshuttle.ch>
Subject: Re: Q: Linux MPP network setup
Organization: EUnet AG
Date: Fri, 12 Jun 1998 21:13:40 -0700
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Message-ID: <3581FC74.D63DB7F2@webshuttle.ch>

Not long ago , I was asking the same question.  It look to me the Beowulf
is not a MP System
at all. So what I did, I set up me own MP stuff in the config files and
little bit changes in the source code. Right
now me PVM is running over Shared Memory using both CPU in the system.   I
am also looking for a good
source how PVM work internaly.

If you like to have my changes you can have it.
To you second question, PVM I guess do it symmetrically. So the first job
will be started on the first system, the
second on the second, third on the first .... or you define where to run
using console or spawn ( but I'm new the
PVM stuff, as I sad it's a guess).

regards roman


Valient Gough wrote:

  I came across PVM when I was browsing Beowulf pages.  I've installed
  PVM3.4beta6 on my dual processor Linux machine, but I'm at a bit of a
  loss on how the setup should be done.

  First, there was no LINUXMP config option, which seemed strange because
  most of the Beowulf projects seemed to use MP machines.

  So, I figured I needed to create a LINUXMP definition.  Looking at the
  difference between other SP/MP config files, such as SGI.def and
  SGIMP.def seemed fairly straight forward, but there were a lot of ifdefs
  in the code that I needed to look for.

  Instead, I tried compling with OVERLOADHOST set, which let me run the
  xep example with both processors - but it was a bit excessive having to
  use rsh/tcp on a MP system.

  Does anyone know how people with MP systems are using PVM?  Is each
  group doing there own internal LINUXMP "port"?

  Secondly, how does machine scheduling take place with a group of MP
  machines?  If I have 2 MP machines (one master, one slave) and ask PVM
  to start 4 jobs, does it know to start 2 on each machine?

  thanks,
  Val Gough