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World Community Grid Forums
Category: Retired Forums
Forum: UD Windows Agent Support [Read Only]
Thread: Hyperthreading with BOINC |
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Thread Status: Active Total posts in this thread: 6
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Evening All,
I've deployed the BOINC client across my little group on networked PCs 8 of them are identical P4 2.8GHZ 516MB PCs with hyperthreading enabled. I can monitor all of them at once from my server using BOINCView and I'm seeing some strange results. All 8 have downloaded 2 workunits each, but the processing varies massively For example, one PC has one unit at 35% completed and the other at 3% whilst another is showing 4% completed for both. (This is all after 2 hours give or take a few minutes and none of the PCs are being used.) Firstly, do you think this is correct? Secondly, should I only run one work unit at a time on Hyperthreaded CPUs? (Just after a 'Best Practice' hint really) Thanks |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hi Lazy Slug,
I'm using the linux client for BOINC. Some WU's are done at 2h30min, but some WU's took over 11hours on my AMD Duron 1300Mhz. I think it's normal what you are seeing on your hosts |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hi Slug,
Trying to run 2 massive scientific programs through 1 tiny L2 cache feeding 1 FPU is a notable example of optimism..... Hyperthreading lets you run a small integer OS task at the same time as a main program without much trouble. It does not let you perform magic tricks. One big program per core/CPU is a good rule of thumb. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thanks mycrofth,
My glass is normally half full rather than half empty, but I thought I'd give it a go !!!! Handy that the BOINC client allows you to just run one and that the users weren't actually trying to do any work !!!! Would this be the same for dual core processors ???? P.S. The forums are pretty busy at then moment, are you getting any sleep, mycrofth |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Due core should be substantially better, since you have two real cores and the ability to do two real tasks at once.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thanks devilspgd,
I was thinking that would be the case but wasn't too sure as I won't be getting any until Jan and so haven't had any experience with them so far |
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