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World Community Grid Forums
Category: Completed Research
Forum: Discovering Dengue Drugs - Together - Phase 2 Forum
Thread: The are you my wingman and why is it taking you so long thread.  |
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Thread Status: Active Total posts in this thread: 336
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TBirdTheYuri
Advanced Cruncher France Joined: Mar 5, 2006 Post Count: 115 Status: Offline Project Badges: 
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Encore aurait-il fallu pour cela que tous ceux qui reçoivent des unités aient une machine relativement rapide (cf les 80 heures de mon T2050), que tout le monde laisse sa machine allumée 24/24 7/7, week-end inclus, et surtout que les machines acceptent des unités de 50 heures alors que le cache est réglé à 2,4 heures (2h 24 mn).
De plus régler 0.1 jour de cache c'est s'exposer à un épuisement des unités en cas de coupure de l'accès à Internet ou d'une panne serveur. En ce qui me concerne, les pannes et arrêts fréquents de certains serveurs (je ne fais pas que du WCG) m'imposent un cache important si je veux éviter que les ordinateurs ne se retrouvent à sec. --- Yet would it take for this reason that all those who receive units have a faster computer (see the 80 hours of my T2050), everyone leaves the machine lit 24/24 7 / 7, weekends included, and especially as the machines accept units of 50 hours while the cache is set at 2.4 hours (2h 24 min). Also set 0.1 day cache is exposed to depleted units in case of interruption of Internet access or a server failure. In my case, failures and frequent stops for some servers (I'm not just the WCG) me to do a large cache if I want to prevent computers from ending up dry. |
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KWSN - A Shrubbery
Master Cruncher Joined: Jan 8, 2006 Post Count: 1585 Status: Offline |
If everyone had used a setting of 0.1 days, All the results would have been back by the 18th or 19th! If everyone set the cache to 10days, it would therefore take 8days longer. Of course not everyone leaves their computers on for 10days, so now it may take even longer, following the re-issue of timed out tasks. If everyone has a 10day cache for each round of the project, the effect is similar to interest on your bank balance - cumulative. Try some of that Maths. The thing is, math and predictions are never that simple. If everyone has a queue of 0.1 days and the servers go down for 18 hours how many years of science are subsequently lost? Likewise, if everyone has a cache of 10 days, BOINC has been programmed to finish the work in time if at all possible. The number of re-sent work units should not be any higher statistically no matter the cache. One must remember above all things, this is a distributed computing model. Speed is not its top benefit. If the scientists were so anxious to get the results back that quickly, they would never have committed them to the general population. Breath deeply and relax, nothing said here will change the timing or the results.  Distributed computing volunteer since September 27, 2000 [Edit 1 times, last edit by KWSN - A Shrubbery at Feb 23, 2010 11:52:08 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Another problem I suspect happened to some, while waiting for launch, they run HCMD so they have a fairly rapid turn over of cache, which can cause the DCF (Duration correction factor) to deflate then when they got first few wu, system was estimating 20-30 hrs run time, so got more to fill cache, then as dcf reset what had started as 2-3 day cache ended up being 6-10
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
One must remember above all things, this is a distributed computing model. Speed is not its top benefit. If the scientists were so anxious to get the results back that quickly, they would never have committed them to the general population. Speed IS a benefit, is cost prohibitive to build a 200,000+ core machine(s) for a single project/user. The tme to results is much shorter using distributed computing vs using normally avaliable systems for the type of projects we are doing, they would take 100 years or longer [Edit 1 times, last edit by Former Member at Feb 24, 2010 3:32:31 AM] |
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Jack007
Master Cruncher CANADA Joined: Feb 25, 2005 Post Count: 1604 Status: Offline Project Badges:
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Just for the whinner, who will remain unnamed, I'm reseting my cache for 9 days from my 1 day...
---------------------------------------- Hope I'm his wingman! |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Still only 7 validated 5 pending and 1 error.
----------------------------------------  All finished a while ago too. Crunching HCC.[Edit 1 times, last edit by Former Member at Feb 24, 2010 10:25:58 AM] |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Well, the queue adjuster (uplinger) advised that so far not a single set of 25 within the first 1000 A types is complete i.e. nothing ready to forward to the scientists to start reviewing and producing the 2 for 1 B Type.
----------------------------------------Officially now 7x24 hours in the air, my 1 of 8 validated, 7 in ram-shackles, has eaten me RAC which used to be near 2,100. It's lurking now at 1,760... it's only credit, wishing the sets would get completed. Those mosquitoes are certainly not on intermezzo.
WCG
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Dataman
Ace Cruncher Joined: Nov 16, 2004 Post Count: 4865 Status: Offline Project Badges: 
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Well said Sek. I have 16 validated and 11 still in PV jail.
---------------------------------------- I hope this does not turn out to be the "2 days to run and 2 weeks to validate" project.I also have concerns about those who may be aborting them for long run times. Some projects outside WCG have both long and short running wu's within the same project. Some people routinely abort the long ones to get more short ones. In this case, aborting the A's would cause less B's & C's to generate. Oh well, mine will validate someday. As you said, Sek ... running this project really does affect personal stat's.   |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
There's an anti-cherry picking function, not sure how tight it's set though. It's a learning process for the WCG techs too as I read today.
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WCG
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roundup
Veteran Cruncher Switzerland Joined: Jul 25, 2006 Post Count: 831 Status: Offline Project Badges: 
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Dear Wingmen,
would you please be so kind to hurry up a little bit to get the following 14 units validated: erlc_ a179_ ps0000_ 0-- Pending Validation erlc_ a174_ ps0000_ 1-- Pending Validation erlc_ a169_ ps0000_ 1-- Pending Validation erlc_ a151_ ps0000_ 1-- Pending Validation erlc_ a144_ ps0000_ 1-- Pending Validation erlc_ a142_ ps0000_ 1-- Pending Validation erlc_ a032_ ps0000_ 0-- Pending Validation erlc_ a033_ ps0000_ 1-- Pending Validation erlc_ d213_ ps0000_ 1-- Pending Validation erlc_ d211_ ps0000_ 0-- Pending Validation erlc_ d210_ ps0000_ 1-- Pending Validation erlc_ d147_ ps0000_ 1-- Pending Validation erlc_ d146_ ps0000_ 1-- Pending Validation erlc_ d145_ ps0000_ 0-- Pending Validation It would even be nice to hear that you have started those units already. Thanks in advance  |
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