Re: Cluster Multiprocessing

[Ward Wheeler <wheeler@amnh.org>]

Hello,
         I've been using CAML and PVM for about 5 years now, most recently 
on a cluster of 256 CPUs in 128 boxes.  The code is used for the 
construction of phylogenetic trees from molecular and other data.  All of 
our code is at ftp.amnh.org /pub/molecular/poy. The setup seems to work 
very well, but as mentioned in a previous note, this is message passing and 
has no shared memory among machines.
         Ward Wheeler

>On Thu, 16 Nov 2000, David McClain wrote:
>
> > I am about to embark on a project that seeks to reduce the computation time
> > of a large problem from 100+ hours to less than 20 minutes. This is
> > initially though to require a cluster of multiprocessors using either a
> > Beowulf architecture, or a large, shared memory, message passing,
> > architecture. I am interested in the suitability (or otherwise) of OCaml to
> > such computations and the experiences of anyone else in this group on such
> > architectures. Garbage collection across nodes in a shared memory
> > architecture seems like a particularly daunting problem.
> >
> > Any responses would be appreciated.
>
>   Shared memory architectures is just the same as ordinary multithereaded
>environment. And, there are PVM3 and MPI bindings for OCaml, if you want
>to use message-passing clustering.
>
>--
>
>    V.S.Lugovsky aka Mauhuur (http://ontil.ihep.su/~vsl) (UIN=45482254)


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Ward Wheeler
Division of Invertebrate Zoology
American Museum of Natural History
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1-212-769-5754 (Voice)
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