I can run parallelHOP in parallel, doesn't that mean I already have an mpi-capable interpreter?
Hi Geoffrey,You may need to build an mpi-capable python interpreter by hand. See: http://mpi4py.scipy.org/docs/usrman/appendix.html#mpi-enabled-python-interpreterNathan Goldbaum
Graduate Student
Astronomy & Astrophysics, UCSC
goldbaum@ucolick.org
http://www.ucolick.org/~goldbaumOn Mar 16, 2012, at 4:37 PM, Geoffrey So wrote:!DSPAM:10175,4f63cec725372860820662! _______________________________________________Hi all, I was trying out pobj_demo.py from the workshop to see if I can parallelize my halo analysis script, but I ran into the problem where I see:>mpirun -n 2 python pobj_demo.py --parallelgives a warning at the endyt : [WARNING ] 2012-03-16 16:25:05,445 parallel_objects() is being used when parallel_capable is false. The loop is not being run in parallel. This may not be what was expected.
I've done ayt instinfo -u and got the latest tip:052fac826701 (yt) tipbut the problem persists. I've tried printing inside the parallel loopsfor sto, sp in parallel_objects(spheres, num_procs, storage = my_storage):print ytcfg.getint("yt", "__global_parallel_rank")sto.result = sp.quantities['TotalQuantity']('CellMass')sto.result_id = '%4e %4e %4e' % (sp.center[0], sp.center[1],sp.center[2])and I always get "0", but 20 of them, so I'm guessing that confirms the loop isn't running in parallel, and just runs the 10 spheres serially on 2 processors, so I get double the results.Am I doing something wrong or missed something?FromG.S.
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