The low down on Pittsburgh!

 

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First-time users

 

We have access to the following machines:

 

BigBen  bigben.psc.edu

2000 processors, massive processor parallelization, poor memory parallelization.

This is designed mainly for integral direct, massively parallel jobs.  The wall time limit is 12 hours, so the jobs should either be short, or, if the jobs are longer they should have a gazillion processors requested.  MPQC is the best fit for it.  QChem also runs here, but... just run them on Rachel.

 

Rachel__rachel.psc.edu

64 processors, okay processor parallelization, good memory parallelization

This is designed for longer jobs with medium processor requirements, but heavier memory requirements.  This machine is also probably faster than BigBen at accessing disk.  NWChem runs here.  QChem runs here.  GAMESS is also available, but doesn’t seem to parallelize well and can be slower than our machines.  More coming on that.

 

Cobalt__cobalt.ncsa.uiuc.edu

Similar to Rachel in terms of type of jobs that should be run.  Molpro2006 runs here…

 

For directions on running jobs, see

 

NWChem4.7 on Rachel


QChem3.1 on Rachel


Molpro2006.1 on Cobalt


QChem2.1 on BigBen


MPQC on BigBen