[Quantian-general] mpi sample mandel.c with mpe

Dirk Eddelbuettel edd at debian.org
Tue Oct 23 01:03:14 UTC 2007


On 22 October 2007 at 19:50, CalcPage at aol.com wrote:
| Where's the example code that comes with mpich?  

I look less at MPICH than at LAM or now Open MPI, but most MPI
implementations have examples, and they tend to be interchangeable (that;s
the nice thing about standards....). 

For LAM, if I recall, it;s in the liblam4-dev package -- I was just hunting
this down a few weeks ago at work.  You will have to look at the
corresponding Debian packages.

Otherwise, the lam-mpi.org website has a lot of docs.  

| There's suppose to be a mandelbrot fractal rendering program called mpe
| that uses mpe for praphics.  I read somewhere that MPI and openMosix go
| together like PB&J.   

Yes, I think I've seen this too. It's a classic example for 'easily
parallelisable code'.

| Does this mean I can compile and run MPI code over openMOsix without
| setting up a Beowulf cluster?  If so, that's what I'd like to see using
| this example. 

Yes, it's a nice feature. You get the MPI message-passing between different
incarnations of your program, and openMosix shuttles them around on the
cluster. I have some details in one or two of the Quantian talks for which
the slides are still on my site.

Hth, Dirk

-- 
Three out of two people have difficulties with fractions.



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