[gmx-users] oscar , lam and beowulf
feenstra at chem.vu.nl
Thu Sep 18 08:52:01 CEST 2003
Y U Sasidhar wrote:
> 1. Can someone comment on using oscar to set up a x86 based cluster to
> run gromacs.
> I have 3 dual xeons and I want to cluster them.
> 2. Someone claimed that beowulf cluster scales much better with the
> number of nodes than with mosix/lam based cluster. What is the
> experience of users on this list ?
AFAIK, the only significant factor in gromacs scaling behaviour on a
cluster is the network hardware, e.g. 100M, 1G ethernet, or myrinet.
Still, for 3 dual Xeons with 100M ethernet on a switch, you should
get decent scaling simply with mpi (i.e., lam).
Finally, clustering is only useful if you have one single simulation
to run for a long time, otherwise you are better (and easier) off by
running several 2CPU simulations on your dual machines (also requires
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| _ _ ___,| K. Anton Feenstra |
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