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World Community Grid Forums
Category: Completed Research
Forum: Help Cure Muscular Dystrophy - Phase 2 Forum
Thread: Return time of a HCMD2 WU half as normal? |
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Thread Status: Active Total posts in this thread: 40
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I picked up some WU's for HCMD2 and saw that the returntime is just 5 days instead of the standard 10 days, is this "project policy" or maybe a mistake?
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I have 14 days, here. It is possible work units are expected to be long/short, as seen in the beta.
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Harreld, I suppose you're just seriously kidding? No, there won't be 5 day jobs as I understand it. A solution was found where results will cut off at a maximum runtime (don't know yet what that max is). The remaining "positions" split up over multiple tasks. If the raw result has 2200 and a cruncher manages to do 200 in 8 hours for instance, the remaining 2000 positions will be split up in 10 additional work units.
----------------------------------------Added: The few received all say 6:31 hours TTC.
WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 1 times, last edit by Sekerob at May 12, 2009 3:06:12 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Harreld, I suppose you're just seriously kidding? No, there won't be 5 day jobs as I understand it. A solution was found where results will cut off at a maximum runtime (don't know yet what that max is). The remaining "positions" split up over multiple tasks. If the raw result has 2200 and a cruncher manages to do 200 in 8 hours for instance, the remaining 2000 positions will be split up in 10 additional work units. Added: The few received all say 6:31 hours TTC. Well, picked up more now, some has to be returned on the 17th of may and the others on the 26th... Also no 10 days...  |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hi Harreld,
We had problems with work unit lengths in the beta test for HCMD2. Some work units (not all) were enormous. Unless we quickly develop an accurate method for estimating the time needed to dock the 2200+ proteins, we will have to be cautious. At first, most work units will be relatively short but a few will be fairly lengthy. So large queues are dangerous. knreed posted one possible solution in the Beta Test support Forum at http://www.worldcommunitygrid.org/forums/wcg/viewthread?thread=25498#227941 : Since we cannot predict length, we are going with plan B. This will mean that we will put an upper bound on execution time for each workunit. If that limit is reached, we will examine how far the workunit got and then create child workunits to finish off the remain work. The quanta of work for this project is a 'position'. So if a workunit is intended to compute 2000 positions, but only 150 are computed. Then we will create child workunits to compute positions 151 - 250, 251-350, etc. This will allow us to get the work done without these massive workunits. Lawrence |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Only received due 26th. Probably the techs/scientists want to force first results or long results back quickly so they can review early, or get the 'overage' copies out sooner.
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WCG
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uplinger
Former World Community Grid Tech Joined: May 23, 2005 Post Count: 3952 Status: Offline Project Badges: 
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Harreld, I suppose you're just seriously kidding? No, there won't be 5 day jobs as I understand it. A solution was found where results will cut off at a maximum runtime (don't know yet what that max is). The remaining "positions" split up over multiple tasks. If the raw result has 2200 and a cruncher manages to do 200 in 8 hours for instance, the remaining 2000 positions will be split up in 10 additional work units. Added: The few received all say 6:31 hours TTC. Well, picked up more now, some has to be returned on the 17th of may and the others on the 26th... Also no 10 days... What you did was probably picked up a work unit that was errored out quickly. What does the results page show for the work units with only a 5 day return period? One of my machines errored out quickly on a few work units with "process got signal 4". This machine is very sick and I have taken it off the grid until I can get some replacement parts for it. Let me know if this is what you are seeing. -Uplinger |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
all the ones i have piucked up are saying the 26th. the runtime is saying about 5 and a half hours, and crunching three of these new ones right now and they are blazing allong at a little over one percent a minute. so unless they slow down they will be done in aless that an hour and a half
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Harreld, I suppose you're just seriously kidding? No, there won't be 5 day jobs as I understand it. A solution was found where results will cut off at a maximum runtime (don't know yet what that max is). The remaining "positions" split up over multiple tasks. If the raw result has 2200 and a cruncher manages to do 200 in 8 hours for instance, the remaining 2000 positions will be split up in 10 additional work units. Added: The few received all say 6:31 hours TTC. ola lawrence, habla espagnol?
WCG
Please help to make the Forums an enjoyable experience for All! |
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uplinger
Former World Community Grid Tech Joined: May 23, 2005 Post Count: 3952 Status: Offline Project Badges:
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all the ones i have piucked up are saying the 26th. the runtime is saying about 5 and a half hours, and crunching three of these new ones right now and they are blazing allong at a little over one percent a minute. so unless they slow down they will be done in aless that an hour and a half I have created a majority of the work units to be around 1 hour in length. But as mentioned earlier in the thread, some of the work units will probably end up being "monsters" running close to 20 hours. These short work units are only temporary and will be just for the start of the project as we are testing a different method for limiting the monster work units runtime length. -Uplinger |
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