Re: Difficulty of programming in parallel

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1 total messages Started by John Salmon Wed, 24 Feb 1988 13:26

#153

Author: John Salmon
Date: Wed, 24 Feb 1988 13:26

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In article <959@hubcap.UUCP> brooks@LLL-CRG.LLNL.GOV (Eugene D. Brooks III) writes:
>The program architecture required for a distributed system is VERY
>DIFFERENT than that of a serial program, and you can't slowly evolve
>a serial program into a parallel program for a distributed architecture,
>as you can for a shared memory machine.
>
>						Eugene Brooks
>-------------------------------------------------------------------

I disagree that programs have to be different.
The program architecture must be different on sequential
and distributed memory machines.  Many of the problems
one encounters are due to a flawed model for using the so-called
"host" processor on the commercial hypercubes.  
There is a large and growing body of hypercube software that
runs UNCHANGED on sequential machines.  For a fuller description
than I feel like typing in at the moment, see "Cubix: Programming
Hypercubes without Programming Hosts," in the Proceedings of the
1987 Knoxville Hypercube Conference or send me email.

John Salmon

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