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From: esaifu (esaifu_at_[hidden])
Date: 2006-05-22 04:47:44


You have to edit lam configurarion file(schema) in your installation
path,(eg: <installation path>/etc/lam/lamb-host.def)
In this file you have to remove the "localhost" entry and add your host
names of both the AMD machines along with
its cpu counts as follows
    <host name of first machine say master> cpu=2 { if it is dual core or
dual processor }
    < host name of first machine say node1> cpu=2 { if it is dual core or
dual processor }
Then issue the command lamboot as a user.
lamboot -v will show all the machine with its number of cpu also.
U can run the gromacs as follows,
 [user systerm @ user]#grompp -f grompp.mdp -c conf.gro -p topol.top -po
mdout.mdp -shuffle -sort -np 4
 [user system @ user]#mpirun -np 4 ./mdrun -deffnm topol -v stepout 100
----- Original Message -----
From: "Beniamino Sciacca" <superbenji83_at_[hidden]>
To: <lam_at_[hidden]>
Sent: Thursday, May 18, 2006 8:52 PM
Subject: LAM: two pc dual core

> Hi community!
> this is my question:
> I've two pc (centrino duo and AMD 64 X2), and i use molecular mechanics
> software (gromacs).
> I need to use both my two pc to simulate faster. The kernel in the pc is
> the same (2.6....).
> The pc are connected by an hub (10Mbps).
> How can i run simulation in parallel with both the pc?
> LAM is installed in both the pc, and during the compilation of gromacs i
> enabled LAM; so before starting "mdrun" i type "lamboot", and then
> mdrun.......
> What must I do to tell mdrun to use both the machines?
> thanks very much for your help
>
> Beniamino Sciacca
>
>
>
>
>
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