linux cluster trouble

From: mpappala_at_unict.it
Date: Tue Nov 09 2004 - 05:47:48 CST

Hi,
I build up a small linux cluster (red hat 9.0) configurated as follow:

pentium IV 2.8 Ghz 1Gb ram connected each other with
switch Hp procurve 2724 (giga)

I use namd2.5 ver. Linux-i686-TCP, other version does not work.

When i start my simulation on 2 processors, it works well. If I increase the
number of processors 4, 6, 8 etc. the program generates the following error
message:

Charmrun: error on request socket--
Socket closed before recv.

this message appear faster if i increase the number of processors

Could someone help me?

greetings

Matteo Pappalardo Ph.D.
Biophysical Chemistry Lab.
Department of Chemical Science
University of Catania
Viale A.Doria 6, 95125 Catania
ITALY
Tel. +39-95-7385204
Fax +39-95-580138
Email:mpappala_at_dipchi.unict.it

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