[gmx-users] problem with lamboot
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.
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.
> 127.0.0.1 localhost
> 255.255.255.255 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
> Rediff Shopping
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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
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