[Beowulf] massive parallel processing application required

[Robert G. Brown]

On Wed, 31 Jan 2007, Mark Hahn wrote:

>> Climate code, especially when coupling between atmosphere and ocean models?
>
> seems like it would require some nontrivial physics, not to mention
> realistic input data.  don't most climate codes also depend on huge
> multi-dimensional FFT's where the transpose is coded as all-to-all?
>
> here's an alternative: nbody physics.  just put a bunch of particles in some
> empty space and see what they do as they interact through gravity.  of
> course, gravity is all-to-all, but then again in a nontrivial sense, less 
> coupled problems are less interesting...

Or another simple physics problem -- simulate e.g. the Ising problem, or
any of a number of problems in magnetism.  Nearest neighbor
interactions, "known results".

And if it is just a matter of a nifty demo, don't forget the always
useful parallel mandelbrot set packages and/or rendering packages
(povray).  I'm pretty sure both are still around -- I still use xep
to demo PVM, although I have hacked it a bit because it is now too easy
to get to the "bottom" of floating point resolution even on a single
processor, which actually kind of sucks as the display breaks down just
when you get way down into the set where things get very odd and spiky.
Spikier.  Whatever.

    rgb

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-- 
Robert G. Brown	                       http://www.phy.duke.edu/~rgb/
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567  Fax: 919-660-2525     email:rgb at phy.duke.edu