Richard, I have been puzzled by this as well and have been watching the logs on a couple of my machines. My theory is that the minimum time slice is "1 hour" . I have my preferences set to 100 Units CPDN and 50 units SETI. This works out to 2/3 processing time for CPDN and 1/3 processing time for Seti.

What I am seeing in the logs and in task manager CPU time summary is two 1 hour time slices assigned to CPDN for every one 1 hour time slice assigned to Seti.

My guess is that if you set your preference to CPDN 1 and SETI 100 then for every 101 hours of operation CPDN will get a single 1 hour timeslice and SETI will get 100.

Here you go ( quoted in another thread ). An explantion from the BOINC team.

http://boinc.berkeley.edu/cpu_sched.php

> Calgary, Canada
> 2004.VIII.30
>
> Howdy Chilcotin:
>
> Actually, I was being facetious about the CPDN=1, Seti=100 statement, not that
> it will make any difference on my computer.
>
> My complaint is that no matter what I set my preferances to, Boinc is giving
> each project an equal share (very communist in its outlook, isn't it?) so CPDN
> runs for 1 hour, then Seti runs for 1 hour, then CPDN runs for 1 hour, etc. -
> on both CPUs.
>
> With 5,000,000+ people, theoritically, crunching for Seti, I certainly
> (actually my sentiment is much stronger and definitely more vulgar - but I
> don't know if the moderators would appreciate my earthy commentary) do not
> want Seti getting a 50% use of either CPU - especially as when I set it for no
> more than 10% (which is still too much when running it on a computer where I
> am running CPDN).
>
> Likely, once I've finsihed crunching the remaining Predictor units, I'll
> detach Seti from my P4-HT, and let it run on the others as it looks as if
> Predictor won't convert for another, at least, couple of weeks now.
>
> -H. Richard Utzig
>
it will make differnce only after u update your boinc project stats
i mean right click at every project and update. in this way, your boinc will connect to project servers and and will get your new prefferenses
if it not connect to server, there is no chanches at your local computer

Also realize that BOINC needs to balance out your resource debt before you will see a true 50/50 split.

This could take a couple weeks.

<a href="http://www.boinc.dk/index.php?page=user_statistics&amp;project=cpdn&amp;userid=355"><img border="0" height="80" src="http://355.cpdn.sig.boinc.dk?188"></a>

&gt; Thank Heffed, but I am not interested in a 50%/50% split (which it presently
&gt; is).

When I had this problem, it turned out that I had separate preferences set for home. I'd overlooked them because I failed to scroll down the page. It's embarrassingly easy to make a simple mistake under BOINC!

&gt; Thank Heffed, but I am not interested in a 50%/50% split (which it presently
&gt; is). I want it 90%/10% which it is not doing,

Same principle. I just used 50/50 as an example.

Until your resource debt is balanced, you will not see the resource share operating the way it should.

<a href="http://www.boinc.dk/index.php?page=user_statistics&amp;project=cpdn&amp;userid=355"><img border="0" height="80" src="http://355.cpdn.sig.boinc.dk?188"></a>

&gt; &gt; Thank Heffed, but I am not interested in a 50%/50% split (which it
&gt; presently
&gt; &gt; is). I want it 90%/10% which it is not doing,
&gt;
&gt; Same principle. I just used 50/50 as an example.
&gt;
&gt; Until your resource debt is balanced, you will not see the resource share
&gt; operating the way it should.
&gt;
4.05 does not handle dual processors very wel for resource sharing. What I have seen is that the project with the resource share over 50% will get one CPU, and the others will share one CPU.

The balancing out over a couple of weeks was what happened under 3.x, but 4.x should start balancing almost immediately. I am a bit surprised that BOINC is not handling your case closer to correctly.

A couple of questons: What are the resource shares for all of the projects that you are attached to (not just the ones that are downloaded). This has an effect on how many WUs are downloaded from each project at one time. Have you looked in the client_state.xml file to see what the debt is doing for each of the projects? Have you looked to see shat the client believes the shares are? I can't remember which file this is in, but it is either in the client_state.xml, or the account_*.xml files.

jm7

Hi all,

I wonder if in future versions of BOINC it will be possible to divide time by giving certain projects priority?
What I mean is this: currently I'm a member of SETI and of ClimatePrediction, but SETI does not always have plenty work for me. So I would like to have BOINC crunching SETI at 100% of the time unless it runs out of work and then continue with other projects, based on priority levels given.

Am I alone with this idea, or are there more people who would prefer this method?

HillyBoy

&gt; So I would like to have
&gt; BOINC crunching SETI at 100% of the time unless it runs out of work and then
&gt; continue with other projects, based on priority levels given.
&gt;
&gt; Am I alone with this idea, or are there more people who would prefer this
&gt; method?
&gt;
&gt; HillyBoy

That would be exactly what I was hoping to use the resource sharing for when I gave S@H 100% and CP 0%, but it didn't work. It would be great if something as simple as priority flags existed.

&gt; Richard, I have been puzzled by this as well and have been watching the logs
&gt; on a couple of my machines. My theory is that the minimum time slice is "1
&gt; hour" . I have my preferences set to 100 Units CPDN and 50 units SETI. This
&gt; works out to 2/3 processing time for CPDN and 1/3 processing time for Seti.
&gt;
&gt; What I am seeing in the logs and in task manager CPU time summary is two 1
&gt; hour time slices assigned to CPDN for every one 1 hour time slice assigned to
&gt; Seti.
&gt;
&gt; My guess is that if you set your preference to CPDN 1 and SETI 100 then for
&gt; every 101 hours of operation CPDN will get a single 1 hour timeslice and SETI
&gt; will get 100.

I have the exac same problem.
My resources is set to 95.24% for CPDN and 4.76% for Seti (This is shown under the Projects Tab)

And I still get the time-shares like this:
2004-09-16 08:22:08 [climateprediction.net] Restarting result 001j_500025040_0 using hadsm3 version 4.03
2004-09-16 08:22:08 [SETI@home] Preempting result 05my04aa.9306.11394.736090.10_2 (quit)
2004-09-16 09:22:08 [climateprediction.net] Preempting result 001j_500025040_0 (quit)
2004-09-16 09:22:08 [SETI@home] Restarting result 05my04aa.9306.11394.736090.10_2 using setiathome version 4.03
2004-09-16 10:22:08 [climateprediction.net] Restarting result 001j_500025040_0 using hadsm3 version 4.03
2004-09-16 10:22:08 [SETI@home] Preempting result 05my04aa.9306.11394.736090.10_2 (quit)
2004-09-16 11:22:08 [climateprediction.net] Preempting result 001j_500025040_0 (quit)
2004-09-16 11:22:08 [SETI@home] Restarting result 05my04aa.9306.11394.736090.10_2 using setiathome version 4.03

@Soni
When first starting a new version BOINC will sometimes switch rapidly between the various projects. After a few hours it should settle down to using hour long chunks. This can also happen when you reset or attach projects.
<br>John Keck -- BOINCing since 2002/12/08 -- <a href="http://www.boinc.dk/index.php?page=user_statistics&amp;project=cpdn&amp;userid=191"><img border="0" height="80" src="http://191.cpdn.sig.boinc.dk?188"></a>

&gt; @Soni
&gt; When first starting a new version BOINC will sometimes switch rapidly between
&gt; the various projects. After a few hours it should settle down to using hour
&gt; long chunks. This can also happen when you reset or attach projects.
&gt; <br>John Keck -- BOINCing since 2002/12/08 -- <a> href="http://www.boinc.dk/index.php?page=user_statistics&amp;project=cpdn&amp;userid=191"&gt;<img> border="0" height="80" src="http://191.cpdn.sig.boinc.dk?188"&gt;</a>

@John Keck

Yes I do know this, but this is after 2 weeks running (24/7), where I had run seti@home alone a few weeks (2-4) before.
So if anything, it should give priority to CPDN, so it could catch up.

I have the same problem @ home on my home machine.
My linux machine did the same, so there I detached the S@H project.

&gt; Until your resource debt is balanced, you will not see the resource share
&gt; operating the way it should.

Feature request: show ressource-dept when vieuwing the project tab in de gui client (and an option to reset it from teh right-cliclk menu) per project.

I was wondering too ewhy seti keeps running 50% of the timne instead of CP all the time. Also noticed that every time I exit an restart boinc, it first does an hour of seti, then an hour of cp, then 1 hour seti again. ( from the preferences, sety only gets arround 5% and CP nearly 70% (rest for pirates and predictor, but they have no work at the moment)

I found out thgat in the client_stat.xml there was a huge value for the seti-project dept, an 0.0 for all other projects.
Don't know how that started, but I edited this to 0.0 for seti, and now wait and see how it develops.

ps. I also upgraded boinc from 4.05 to 4.09, today.