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Old 19-01-2010, 01:12 AM   #1
Sonic
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SMP problems

Just thought i'd let you guys know i've had 2 of my servers down for the last few days.

They both decided to stop folding last week which i only noticed today. It seems there was something about a module they both downloaded which they didnt like.

One required the queue.dat file removing and a restarted the other was more fiddly and required the queue.date machineindependent and work files/folders removing before several restarts to get working.

All work they had done that hadn't been submitted was lost.

The SMP beta cores can be bloody annoying sometimes and it seems i have to manually intervene at least once every other week
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Old 19-01-2010, 04:17 PM   #2
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Quote:
Originally Posted by Sonic View Post
Just thought i'd let you guys know i've had 2 of my servers down for the last few days.
That is _so_ frustrating. Whenever I turn the monitor back on at the start of
the day, I'm hoping that the SMP client hasn't frozen the machine. It happens
maybe once every 10 days or so.

Which SMP clients are you running Andy? I had tremendous problems with the
16bit Deino ones, so I switched to the MPICH ones, but the machine can hang
at any time. Luckily, it has only happened when the monitor is turned off, so
no current work lost.

Regards,
Steve
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Old 19-01-2010, 04:21 PM   #3
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I've got 2 of the 64bit linux ones running, one is now consuming 100% of 4 CPU's like its meant to using the a2 core, the other is using 25% of 4 CPU's sporadically with the a1 core.

The one i have running under windows server 2008 has been disabled for now because its locking up the server. Its too aggressive in its CPU usage when im trying to do basic front end tasks on it.
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Old 19-01-2010, 04:53 PM   #4
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Hi Andy,
Quote:
Originally Posted by Sonic View Post
The one i have running under windows server 2008 has been disabled for now because its locking up the server. Its too aggressive in its CPU usage when im trying to do basic front end tasks on it.
It would be interesting to compare what PPD you would get running multiple
standard cores instead. I'm toying with this myself. I've managed to control
the SMP aggressiveness with these environment settings...

BROOK_YIELD = 2
CAL_NO_FLUSH = 1
FLUSH_INTERVAL = 128

There are occasions when I've had to reduce the Flush Interval to as low as 96,
but that also extended the frame time by quite a margin - too close to the
deadline date if the machine were to hang. At least I'm not touch-typing, or
it would have to be removed.

Regards,
Steve
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