
I ran 8 x 32 fake image copies on the 32 po nodes. each one should
last a minimal amount of time (no real action, no sleep).  The time to
process the stack is essentially the speed at which pcontrol can cycle
though the nodes:

-rw-rw-r--  1 eugene users   17 2005-08-11 19:28:50.000000000 -1000 file.00.032.fits
-rw-rw-r--  1 eugene users   17 2005-08-11 19:29:20.000000000 -1000 file.07.015.fits

that is 30 seconds to run 8 x 32 jobs: 

0.117 sec / job
3.750 sec / (job / node)

I ran the same 8 x 32 jobs on one node, with the following rate:

-rw-rw-r--  1 eugene users   17 2005-08-11 19:34:39.000000000 -1000 file.00.001.fits
-rw-rw-r--  1 eugene users   17 2005-08-11 19:35:30.000000000 -1000 file.07.029.fits

or 51 seconds to run 8 x 32 jobs on 1 node.

0.199 sec / job
0.199 sec / (job / node)

--

I ran the same test getting 56 seconds for 8 x 32 copies on 32 nodes.
This time, I used one of the machines in the po cluster (po33) for the
test:

0.219 sec / job

-rw-rw-r--  1 eugene users   17 2005-08-11 19:45:25.000000000 -1000 file.00.030.fits
-rw-rw-r--  1 eugene users   17 2005-08-11 19:46:21.000000000 -1000 file.07.028.fits

--

running on psched, from kiawe to po01-po32
-rw-rw-r--  1 eugene users    17 2005-08-11 20:11:25.000000000 -1000 file.00.003.fits
-rw-rw-r--  1 eugene users    17 2005-08-11 20:12:30.000000000 -1000 file.07.032.fits

55 seconds; roughly equivalent.  
