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<blockquote cite="mid:1240507445.27523.10.camel@browncoat.jics.utk.edu"
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<pre wrap="">On Thu, 2009-04-23 at 11:05 -0600, Jerry Smith wrote:
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<pre wrap=""> If you do not distinguish between PBSpro and Torque, and whether
they use Maui, MOAB, or pbs_sched as the scheduler. Then #2 and #3
also use PBS or Torque. #3 is 6400 nodes, #2 is nearly 20,000 nodes.
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<pre wrap="">Does anyone know if each host on these clusters is running a pbs_mom?
I know of some systems that have pbs_mom on the front end ( for job
control etc ), but the compute partitions are running something else.
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<pre wrap=""><!---->
On the Cray XT systems running TORQUE to which I have access, there are
pbs_mom's running on the login nodes and some other service nodes, but
not on the individual compute nodes. Access to the compute nodes is
managed by a Cray-specific service called ALPS, through an mpiexec-like
command called aprun.
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This was my experience as well with the XT3/XT4 system we have here.
And is why I was asking. A cluster can be 100k procs, and still only
have 100 or less pbs_moms running.<br>
<br>
Thanks for the follow up Troy.<br>
<br>
--Jerry<br>
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