[CIG-MC] CitcomS in full spherical mode on a desktop

[Leif Strand]

Hello,

The launcher options 'nodegen' and 'nodelist' are only meaningful on a 
Beowulf-style cluster that doesn't have a job scheduler (such as LSF or 
PBS). On a desktop or laptop, they are meaningless since there is only 
one node.

In general, you want to debug the 'mpirun' command so that it looks 
correct for the particular flavor of MPI you are using:

    citcoms example0.cfg --launcher.dry

The above command will dump the 'mpirun' command, instead of actually 
running CitcomS.

To control the 'mpirun' command used by CitcomS, edit the file 
~/.pyre/CitcomS/CitcomS.cfg (create this file if it doesn't exist). This 
file might look like the following:

    [CitcomS.launcher]
    command = mpirun -np ${nodes}


However, if you are using MPICH2, it should instead specify 'mpiexec':

    [CitcomS.launcher]
    command = mpiexec -np ${nodes}


Depending upon your environment settings (PATH in particular), sometimes 
it is helpful to specify the full path to 'mpirun' (or 'mpiexec'):

    [CitcomS.launcher]
    command = /home/leif/opt/lam/bin/mpirun -np ${nodes}

In any case, I would avoid using the 'nodegen' and 'nodelist' options. 
If you still encounter problems, send us the error message, and let us 
know which flavor of MPI you are using.

--Leif Strand

C.S Natarajan wrote:
> Hi
>     I am wondering if it is possible to run CitcomS in Full spherical mode
> on a desktop MAC. I know it's possible to run it on one processor in a
> cluster environment, but nodegen on dual or quad core mac doesn't
> recognize processor number. Any ideas how I can get around the problem
> will be very useful.
>
> Thanks
>
> C.S.Natraj
>
>
>