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Posts by Marcin

1) Message boards : Application Code Discussion : N-Body simulation may be faulty over 800 hours computation time estimate (Message 58427)
Posted 28 May 2013 by ProfileMarcin
Post:


Next time you get one let it run for a couple of minutes then suspend MW for a slow count of 5 then restart it and see if the processing picks back up. SOMETIMES Boinc forgets what it is doing and stops using the gpu and instead tries to use the cpu to crunch with, the suspend/resume method sometimes brings it back to reality and the gpu kicks back in again.

Thanks for the reply.
I will be sure to try the described method
2) Message boards : Application Code Discussion : N-Body simulation may be faulty over 800 hours computation time estimate (Message 58413)
Posted 26 May 2013 by ProfileMarcin
Post:
i'd like to report a serious bug with some strand of N-body simulation tasks:
some of them, namely all with "chisq_alt_" in their name show computation time estimate of over 800 hours, and get to about 10% after running 3 days straight, verification then shows as inconclusive on the website
here is example of 1 task
MilkyWay@Home N-Body Simulation 1.08
de_nbody_10k_chisq_alt_40913_1366886102_673146
computation size 624753000 GFLOP’s
it's estimated computation time was 799 hours, it seemed to be not progressing at all
i think there may be a bug related to that task series.
To milkyWay@Home team: please consider this as a bug report and please investigate the cause of this

Thanks in advance
3) Message boards : News : started a new nbody search: de_nbody_model1_1 (Message 42100)
Posted 13 Sep 2010 by ProfileMarcin
Post:
Update: Five more workunits, all de_nbody_model1_1, and for a change all now completed, four of them already validated. Run time between 30 and 60 minutes. Still don't have a clue why some crash and others not.

ooh i'm running milkyway on MAC OS X 10.6.4 so maybe the sprint-times of nbody are cause of this instead of Windows?
4) Message boards : News : started a new nbody search: de_nbody_model1_1 (Message 42078)
Posted 12 Sep 2010 by ProfileMarcin
Post:
well for me the new workunits go hell faster
normal unit works for 15-18 hours and the nbody just TWO hours to do-isn't it wieerd?




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