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Preempting question

Preempting question

Questions and Answers : Windows : Preempting question
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Kathy Applebaum

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Message 3392 - Posted: 8 Sep 2004, 1:09:39 UTC

BOINC version 4.05 is happily chugging along on my Windows XP box, doing Climate Prediction and SETI. I have CP set to have about 95% of the resources, and SETI about 5%, and this is reflected correctly in the \"projects\" tab.

As I understand it, this setup should give Climate Prediction 95% (more or less) of my time, and SETI isn\'t supposed to have a \"debt\" from the time their servers were down. But in the last six hours (since my box got more work from SETI), CP and SETI have been taking turns every hour -- SETI has had a total of three hours, and CP has had three hours. This is reflected both in the log and in the CPU time listed.

So, am I not understanding this preemption thing? Is there another setting I need to do? Is it just not working right? Thanks!
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old_user2500

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Message 3411 - Posted: 8 Sep 2004, 5:35:58 UTC

I believe there was some discussion in other threads that the resource commitment is averaged over a period of time ( not sure how long ). Since Seti has been down for awhile the application may be "owed" some time now that it is back up.

I would give it a day or two to balance out.
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John McLeod VII
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Message 3449 - Posted: 8 Sep 2004, 13:13:12 UTC

I think that there may be a bug with the resource sharing in 4.05.

It is possible that the application switches to a new project every hour, it picks the one that is not currently running that has the highest debt.

It is possible that the number of WUs on the system for each project is counted.
<a href="http://www.boinc.dk/index.php?page=user_statistics&amp;project=cpdn&amp;userid=13"><img border="0" height="80" src="http://13.cpdn.sig.boinc.dk?188"></a>
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Kathy Applebaum

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Message 3453 - Posted: 8 Sep 2004, 13:55:50 UTC - in response to Message 3449.  

&gt; I think that there may be a bug with the resource sharing in 4.05.

After letting it run overnight, I'm leaning more and more towards this possibility. More below.

&gt; It is possible that the application switches to a new project every hour, it
&gt; picks the one that is not currently running that has the highest debt.

That's what I had understood. It might be the project BOINC had just been crunching, it might be another one. After I posted, it occured to me that the docs on resource sharing had said that "no work" resets the debt to zero, but it didn't say anything about just not being able to connect to the servers. However, after running all night, SETI is still getting every other hour. Looking at how much time SETI has gotten in the last 18 hours, versus how much time CP has gotten in the last three weeks, SETI is definitely above the resource share it should be getting.

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Questions and Answers : Windows : Preempting question

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