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Re: Two CPU AMD PC and Mathematica

• To: mathgroup at smc.vnet.net
• Subject: [mg29631] Re: Two CPU AMD PC and Mathematica
• From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
• Date: Fri, 29 Jun 2001 01:36:04 -0400 (EDT)
• Organization: Universitaet Leipzig
• References: <9guok5$nv9$1@smc.vnet.net> <9h1ajj$rhu$1@smc.vnet.net> <9h3vq9$48n$1@smc.vnet.net> <9hc8d2$40r$1@smc.vnet.net> <9hetk5$6k8$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

it would *if* it take not time to distribute the data to the
other CPU's *and* it would take not time to get the values
back. Since the overhead of sending and getting data 
ist extrem high you need a really time consuming function
to outweight it. 

In general I can't tell you if there is a speed up.
But I can tell you that our students in the parallel
processing laboratory never get a speed up for the
example tasks :-)))

Regards
  Jens

Orestis Vantzos wrote:
> 
> The single most common Mathematica operation I use is Map (and variations of
> it, such as Table)...I don't see why it couldn't be made to run
> concurrently. Divide the elements of the list to be operated on and spread
> among available processors, or something like that. I figure there would be
> an impressive speed up of my programs, if this could be done...
> Orestis