[gmx-users] problem with lamboot

Carsten Kutzner ckutzne at gwdg.de
Mon Nov 3 09:11:33 CET 2008


if you just want to use both cores on your local machine, then you do
not necessarily need a hostfile. Just type "lamboot" and later specify
the number of cores you want to use with

mpirun -np 2 mdrun ...

BTW, the hostfile you cite below is not the one LAM expects. Use a simple
text editor to create, say "lamhost", and give the name of each machine
with the number of cores, e.g.

mycomputer     cpu=2
remotecomputer cpu=4

This you can use with "lamboot -v lamhost".


sarbani chattopadhyay wrote:
>   Hi everybody,
>                       I have question regarding parallel run. I am new
> to this and may sound very
> stupid so please bear with me.
>           Our's is a 10.4.1 Mac Os X with 2 X 2.66 GHz Dual -Core Intel
> Xeon processor.
> Gromacs 3.3.1 was loaded in it. Then I had downloaded the "lam-7.06"
> package from the
> gromacs homepage.
> The host file is present in /private/etc/ directory as expected and reads
> ##
> # Host Database
> #
> # localhost is used to configure the loopback interface
> # when the system is booting.  Do not change this entry.
> ##
>      localhost
> broadcasthost
> ::1            localhost
> However  "lamboot" gives error on running on this host file. I want to
> know the correct way
> to modify the host file so that I can launch the "lam/mpi" environment.
> Any suggestion is welcome.
> Thanks in advance
> Sarbani 
> Rediff Shopping
> <http://adworks.rediff.com/cgi-bin/AdWorks/click.cgi/www.rediff.com/signature-default.htm/1050715198@Middle5/2206641_2199021/2201651/1?PARTNER=3&OAS_QUERY=null>
> ------------------------------------------------------------------------
> _______________________________________________
> gmx-users mailing list    gmx-users at gromacs.org
> http://www.gromacs.org/mailman/listinfo/gmx-users
> Please search the archive at http://www.gromacs.org/search before posting!
> Please don't post (un)subscribe requests to the list. Use the 
> www interface or send it to gmx-users-request at gromacs.org.
> Can't post? Read http://www.gromacs.org/mailing_lists/users.php

Dr. Carsten Kutzner
Max Planck Institute for Biophysical Chemistry
Theoretical and Computational Biophysics Department
Am Fassberg 11
37077 Goettingen, Germany
Tel. +49-551-2012313, Fax: +49-551-2012302

More information about the gromacs.org_gmx-users mailing list