Rif: Re: linux cluster trouble

From: max (mpappala_at_dipchi.unict.it)
Date: Wed Nov 10 2004 - 03:00:42 CST

 hello,
I am not sure that the problem it is the rsh protocol. I use the ssh
protocol, and the result it is the same.
Now, i am trying to compile namd on my cluster.
 
-------Messaggio originale-------
 
Da: Mounir Tarek
Data: 11/09/04 14:32:07
A: mpappala_at_unict.it
Cc: namd-l_at_ks.uiuc.edu
Oggetto: Re: namd-l: linux cluster trouble
 
Hi
 
 
I have a similarr problem that I have submitted to the list a couple of
weeks
ago.
I have setu up my cluster using the ROCKS NPACI distribution.
 
I have not solved it yet,
tought at some point it was the rsh protocol.
 
I have got it to run on 4 procs passed the first iteration once in a while
(at
random), results not reproduceable.
 
Any suggestions please don't hesitate
 
 
 
Selon mpappala_at_unict.it:
 
> 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
>
>
>
> ----------------------------------------------------------------
> Università di Catania - C.E.A.
> Servizio di Posta Elettronica
> http://www.cea.unict.it
>
>
 
 
--
Mounir Tarek
Equipe de dynamique des assemblages membranaires
Unité Mixte de Recherches CNRS UHP 7565
Université Henri-Poincaré, Nancy I
BP 239, 54506 Vandoeuvre-lès-Nancy, cedex France
tel: (33) 3 83 68 40 95
Fax: (33) 3 83 68 43 87
 


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