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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: linux vs windows performance |
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Thread Status: Active Total posts in this thread: 5
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gabranth99
Cruncher Joined: Mar 1, 2011 Post Count: 26 Status: Offline |
is it me or is windows faster than linux as on windows it had time remaining 4-5 hours in linux it is 8-9 hours
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
For which science?
Comparing TTC is meaningless as the projected times are highly variable. You need to run dozens,best in dual boot to get any reasonable idea if your setup handles the sciences on what platform faster. What we know is the Integer dense sciences are handled much better on Linux (HCC e.g.). Floating point barely differs. Overall, given the more efficient OS that Linux is, throughput is greater on this platform, particularly if the OS GUI has been stopped. Observations may differ. --//-- |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I have actually seen ~10% performance difference in the favor of Windows when running all threads on a CPU with hyperthreading:
With eight WCG threads on a HT quad, Win 7 averages 3.0 hours for a C4CW work unit, while Ubuntu 10.10 averages 3.4 hours. I don't have exact numbers for the four threads scenario, but so far Linux seems to be faster there. I think it's some sort of scheduling issue - with 8 threads and HT Windows will use all cores 100%, while Linux will leave the last core idle perhaps 50% of the time. I'm not seeing this difference when running less than the maximum number of threads. But I agree with SekeRob that the 'time remaining' is unreliable, you need to compare actual time for several work units on a project where most of the work units are roughly the same size. (Filter on project in the "results status" view in the web interface, and you see which projects have a fairly stable CPU time and which ones wander all over the place.) |
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sk..
Master Cruncher http://s17.rimg.info/ccb5d62bd3e856cc0d1df9b0ee2f7f6a.gif Joined: Mar 22, 2007 Post Count: 2324 Status: Offline Project Badges: 
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is it me or is windows faster than linux as on windows it had time remaining 4-5 hours in linux it is 8-9 hours It's you |
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gabranth99
Cruncher Joined: Mar 1, 2011 Post Count: 26 Status: Offline |
is it me or is windows faster than linux as on windows it had time remaining 4-5 hours in linux it is 8-9 hours It's youi thought so |
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