[Beowulf] multi-threading vs. MPI

Michael Will mwill at penguincomputing.com
Fri Dec 7 14:16:54 PST 2007

Distributed objects... Corba... Soap... This all precedes multiple cores per server and essentially is message passing in the enterprise.


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 -----Original Message-----
From: 	Toon Knapen [mailto:toon.knapen at gmail.com]
Sent:	Friday, December 07, 2007 01:31 PM Pacific Standard Time
To:	Greg Lindahl
Cc:	beowulf at beowulf.org
Subject:	Re: [Beowulf] multi-threading vs. MPI

Greg Lindahl wrote:
> In real life (i.e. not HPC), everyone uses message passing between
> nodes.  So I don't see what you're getting at.

Many on this list suggest that using multiple MPI-processes on one and 
the same node is superior to MT approaches IIUC. However I have the 
impression that almost the whole industry is looking into MT to benefit 
from multi-core without even considering message-passing. Why is that so?

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