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World Community Grid Forums
Category: Completed Research
Forum: Say No to Schistosoma Forum
Thread: Every WU result is Invalid |
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Thread Status: Active Total posts in this thread: 14
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branjo
Master Cruncher Slovakia Joined: Jun 29, 2012 Post Count: 1892 Status: Offline Project Badges: 
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I just found out that even thought I bought non-overclockable CPU, it is overclockable (i7 3770) thanks to Intel Turbo Boost Technology 2.0. When crunching via app info, TBT activates CPU clock frequency boosting (from 3.4 to up to 3.9 GHz), so this might be the reason of my invalid VINA projects results.
----------------------------------------I know this is not your problem piroque, just hijacking your thread  Cheers and NI!  Crunching@Home since January 13 2000. Shrubbing@Home since January 5 2006  [Edit 1 times, last edit by branjo at Nov 26, 2012 9:34:50 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
branjo, if your TBT featured 3770 would fail on the variable ITBT, mine would have done that long. My 2670QM varies the GHZ constantly based on overall demand and system temps between 2.2 and 2.6 and in steps of 99Mhz can go as low as 0.9 and as high as 3.1 [full turbo, which I get e.g. when Excel does an 8 threaded heavy sheet calculation]. For sure if TBT on 3770 would do harm to the VINA task and turn them invalid, it would have come out already. The techs have the statistical detail.
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branjo
Master Cruncher Slovakia Joined: Jun 29, 2012 Post Count: 1892 Status: Offline Project Badges:
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Thanks SekeRob for pointing out on another dead end
---------------------------------------- . I am giving up for a while - HCC1 GPU is running great, so I do not want to try to fix what ain't broken  CHeers and good luck Crunching@Home since January 13 2000. Shrubbing@Home since January 5 2006 |
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pirogue
Veteran Cruncher USA Joined: Dec 8, 2008 Post Count: 685 Status: Offline Project Badges: 
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pirogue, *everything* going invalid is closest to there being an timing issue in the device... OC is one cause. Whilst the newer clients offer better management of GPU crunching, I can't possibly see the client doing anything to the science app - which is doing the work - 32 bit or 64 bit, Linux or Woz? Win7 x64 |
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