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World Community Grid Forums
Category: Retired Forums
Forum: Member-to-Member Support [Read Only]
Thread: Strange wu behaviour |
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Thread Status: Active Total posts in this thread: 16
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I've been folding here since 7/25 and today has seen a lot of odd wu's like never before. I've had something like 9 units that would run for between 1 and 2 hours with from zero to 1% progress and then go right to 100%. Have had 5 others that are running at no more than 5% per hour of cpu time. This is unusually slow for so many units in one day for my setups in my experience. This is all happening among 8 fast pc's ( 2.1GHz to 3GHZ) that have been rebooted and caches cleared so I don't think the hardware is the issue.
Has anyone else seen this behaviour today or ever? |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I had a unit that did 1% in just over an hour on a 2.6 P4; it was finished before 1 1/2 hours and uploaded OK. I've got a couple of big WU's processing on 2 faster machines now that look like they may take close to 30 hours each. Maybe the WU's are becoming more complex towards the end of the project?
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
It sure is odd seeming to come all at once like this, VAIO. Glad to hear it's not just me.
Cheers. |
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fingerle
Senior Cruncher Joined: Jul 20, 2005 Post Count: 194 Status: Offline |
Had those superquick under 3hr units most of the day yesterday. Today.. Back to 10-14hr units.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
We may be seeing a few non-convergent work units. I've noticed a few of these on my systems the past day or so.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
What is "non-convergent" - at the risk of sounding completely thick - in the context of work units?
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
VAIO GRX616 --
In a post in another thread, Rick Alther, one of the techs at the World Community Grid, said, "Some workunits are what we call non-convergant. When we detect this situation, we abort the workunit and return what work you have done back to the server. They're still just as valuable as any other workunit. It will likely take at least few hours to determine this scenario though." In other postings, non-convergance is the term used to describe those work units for which the Rosetta software is unable to calculate solutions. Best Regards, |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Ah, I see, something like a dud 'un then
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I have also seen units like that this past week...... 3 or 4 hours for 5% and then zoom its gone.
Currently I am on a killer unit..64% now for 30 hours. This is on a high performance computer. Previous killers had a rosetta value of 1500 or higher. The current killers seem to be 1100 eventually geting to 1300'sih. At this rate it may take another 20 hours to finish this unit. |
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Johnny Cool
Ace Cruncher USA Joined: Jul 28, 2005 Post Count: 8621 Status: Offline Project Badges: 
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Just curious, if you get one of those non-convergent work units and it appears to be a highly unusual one where it may take an "unbelievable" amount of time, how do you abort it?
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