Re: build charm on ia-64 linux

From: Chris Samuel (
Date: Tue Jun 15 2004 - 18:23:17 CDT

Hash: SHA1

On Sat, 12 Jun 2004 10:41 am, Sichun Yang wrote:

> However, the megatest failed when I try to have a test run on 4
> processors,
> it asks for passwords.
> Any suggestion is welcome. Thanks,
> -Sichun
>     charm++/megatest> ./charmrun +p4 ./pgm
> Running on 4 processors:  ./pgm
> Password: Password: Password: Password:

This is happening because charmrun in this context is just calling mpirun,
which is probably using SSH (maybe rsh) and you've not set up passwordless
logins which I note that you've now fixed.

Seeing as you've built an MPI version of NAMD, and from a later email shows
you using the qsub command so I presume you're using a version of Torque or
PBS then you can try and use the open source mpiexec program to launch the
job instead of mpirun or charmrun.

This would allow you to use the following in the script you submit with qsub:

        cd $PBS_O_WORKDIR
        mpiexec ./pgm

and it will work out all it needs to know from the Torque/PBS environment. Of
course you have to have the mpiexec command in your $PATH!

You can find mpiexec here:

- --
 Christopher Samuel - (03)9925 4751 - VPAC Systems & Network Admin
 Victorian Partnership for Advanced Computing
 Bldg 91, 110 Victoria Street, Carlton South, VIC 3053, Australia

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