Something SERIOUSLY wrong with run times

Message boards : Graphics cards (GPUs) : Something SERIOUSLY wrong with run times
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Profile Paul D. Buck

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Message 5167 - Posted: 2 Jan 2009, 12:04:23 UTC - in response to Message 5166.  

Ah, now I get it!

As far as I know BOINC doesn't set CPU affinity, which is good. In windows any default tasks can use any CPU and the scheduler shuffles them around in a strange manner (Linux also does it this way). A task is only pinned to a specific core if the CPU affinity is set accordingly. So in your 8+2 case the CPU time for both GPUs would be taken from all 8 cores on average.

MrS


But not here. 3 tasks are running with 25%, on task with 21% and the acem... - task takes 4%.


All I can report is my experience ... :)

I did get talked into turning GPU Grid back on for the 9800 but am running afoul of the Resource Share bug ... so I will have to wait a bit till it grabs a task ... for the moment I am just going to let nature take its course and see what happens ... I have plenty of other goals to meet ... :)

13 or 14 by now I think ... and the good news is that the GPU Grid goal is being met with little muss or fuss ... Heck, it is even possible that GPU Grid will get there by the end of January ... won't that be a pip?
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Message 5169 - Posted: 2 Jan 2009, 14:30:11 UTC

Seems like in theory reality matches theory much better than in reality..

Why would a scheduler run the only 2 tasks with normal priority on the same core, whereas all other cores run tasks with low priority? That seems stupid! In my WinXP I installed BOINc in protected mode, which means that I can't access the tasks in task manager. Would anyone mind to check the affinity settings? In task manger rightclick the acemd.exe and choose the last option, don't know how it's called in english. All vailable cores should be selected, otherwise BOINC (or the user :p ) did set CPU affinity.

MrS
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Message 5175 - Posted: 2 Jan 2009, 18:39:38 UTC - in response to Message 5169.  
Last modified: 2 Jan 2009, 18:40:33 UTC

Seems like in theory reality matches theory much better than in reality..

Why would a scheduler run the only 2 tasks with normal priority on the same core, whereas all other cores run tasks with low priority? That seems stupid! In my WinXP I installed BOINc in protected mode, which means that I can't access the tasks in task manager. Would anyone mind to check the affinity settings? In task manger rightclick the acemd.exe and choose the last option, don't know how it's called in english. All vailable cores should be selected, otherwise BOINC (or the user :p ) did set CPU affinity.

MrS


"Set Affinity"... for which I get access denied as I too installed it in protected mode ...

{edit}I never did notice that WIndows made smart decisions about most things ... but that is just me ... {/edit}
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Message boards : Graphics cards (GPUs) : Something SERIOUSLY wrong with run times

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