some cluster questions

From: Leandro Martinez (lmartinez_at_iqm.unicamp.br)
Date: Wed Feb 18 2004 - 07:51:13 CST

  Hi,
   We are about to buy something like 20 dual Athlons for
runing NAMD. We are now deciding exactly which hardware to
buy, and we have a few questions:

  1. Using 1000 Mbps is critical? For a cluster of that
size 100 Mbps conections are too slow?

  2. We are uncertain about buing 1 switch of 24 ports or
3 switches of 8 ports (cheaper), both with the same
velocity, does any one knows if the second option makes the
cluster slower? Any tip about that?

  Thanks,

   Leandro Martinez
   State University of Campinas,
   Campinas, SP, Brazil.

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