Advice on "mini" Beowulf cluster
Miska Le Louarn
lelouarn at eso.org
Mon Feb 4 03:05:42 EST 2002
> Matrices multiply of 10000 can easily fit on one machine. Have you
> looked at 4-way SMPs ?
> Scalapack is "dense", you will be fine with Fast ethernet, specially
> for a small number of nodes. Don't use a tiny blocksize and you won't
> produce much traffic (rule of thumb: use the optimal blocksize
> computed by ATLAS and try 1x, 2x, 3x, ...).
Those machines seem to be way more expensive than a few PCs.
Yes, I am not too concerned about the matrix multiplication in fact.
However, the SVD is a n^3 process and that takes a *Lot* of memory... I
was not sure if the oparation was network intensive too. I made some
simple tests on just a few PCs which tended to show that it was not.
Thanks for the confirmation.
* Miska Le Louarn, PhD Phone: (49) 89 320 06 908 *
* European Southern Observatory FAX : (49) 89 320 23 62 *
* Karl Schwarzschild Str. 2 e-mail: lelouarn at eso.org *
* D-85748 Garching http://www.eso.org/~lelouarn *
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