[yt-users] Running YT in Parallel on Nautilus

[Dave Semeraro]

I believe YT is installed on nautilus globally. If you want to use YT on Nautilus you can get your environment set up by executing 
"module load yt" from the command line. mpi4py and all that should already be there. 

Dave Semeraro

----- Original Message -----
> I guess this would be a sort of followup to Stephen's email of running
> YT
> on Kraken, here's what I figured out combined with what I got from the
> system admin:
> 
> Installing mpi4py can be a little more troublesome because there's no
> mpicc wrapper, you'll have to edit the mpi.cfg file and put in:
> 
> mpicc = gcc -lmpi
> mpicxx = g++ -lmpi++ -lmpi
> 
> then do:
> python setup.py build --mpi=<your mpi section name in mpi.cfg>
> python setup.py install
> 
> (following http://mpi4py.scipy.org/docs/usrman/install.html)
> 
> next you'll have to set these environment variables, I have it in a
> .bashrc and source it every time I log into Nautilus.
> 
> module swap mpt mpt/2.03
> export MPI_SHARED_NEIGHBORHOOD=HOST
> 
> Last but not least, the system admin told me SGI identified a bug so
> that
> mpi at least under python works for only up to 8 processors. I've
> tried
> 16 and failed, tried 8 and ran, so I believe their story.
> 
> so under an interactive queue, you'll want to do something like:
> mpiexec -np 8 python script.py --parallel
> to run YT in parallel
> 
> Hope this helps
> 
> From
> G.S.
> 
> > Hi All,
> >
> > I've just updated the common install of yt on Kraken to 2.1, and
> > added
> > an install of the unstable branch. Both are full copies of yt that
> > is
> > kept on lustre in a non-volatile place. This means that it is
> > accessible from both the login nodes and the compute nodes, but
> > unlike
> > most files on Lustre, will not be deleted automatically.
> >
> > If you wish to use yt 2.1, which will only see changes for bug
> > fixes,
> > please set your environment using these settings:
> >
> > YT_DEST => /lustre/scratch/proj/yt_common/2.1
> > PATH => /lustre/scratch/proj/yt_common/2.1/bin/
> > PYTHONPATH =>
> > /lustre/scratch/proj/yt_common/2.1/lib/python2.7/site-packages/
> > LD_LIBRARY_PATH => /lustre/scratch/proj/yt_common/2.1/lib/
> >
> > If you wish to use the unstable branch, which I'll update on Kraken
> > when I remember to do it (or you can bug me if I haven't):
> >
> > YT_DEST => /lustre/scratch/proj/yt_common/unstable
> > PATH => /lustre/scratch/proj/yt_common/unstable/bin/
> > PYTHONPATH =>
> > /lustre/scratch/proj/yt_common/unstable/lib/python2.7/site-packages/
> > LD_LIBRARY_PATH => /lustre/scratch/proj/yt_common/unstable/lib/
> >
> > The older versions of yt at /lustre/scratch/proj/yt_common/2.0 and
> > /lustre/scratch/proj/yt_common/trunk will be deleted within a week
> > or
> > so.
> >
> >
> > --
> > Stephen Skory
> > s at skory.us
> > http://stephenskory.com/
> > 510.621.3687 (google voice)
> > _______________________________________________
> > yt-users mailing list
> > yt-users at lists.spacepope.org
> > http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
> >
> 
> 
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