I\'m convinced that the BOINC client is comsuming far more of my cpu cycles than the Classic CPDN did. Generally speaking CPDN usually took up about 40% of my CPU, BOINC is often at close to 100. The problem may be that I appear to be running two models. Is this normal, or did I stuff up when I was setting up the process? If it isn\'t normal to run two at a time, how can I reduce the load without causing problems? I\'m running XP SP2 on a 2.8 Ghz Pentium 4 machine, and I\'ve currently got preferences set to suspend activity when I\'m using the machine.

BOINC recognizes HT processors as 2 processors and will run one model per CPU. The old version would only run 1. This seems to be what you are seeing. If you only want to run one at a time you can set maximum number of CPUs to 1.
<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; BOINC recognizes HT processors as 2 processors and will run one model per CPU.
&gt; The old version would only run 1. This seems to be what you are seeing. If you
&gt; only want to run one at a time you can set maximum number of CPUs to 1.
&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>
&gt;
&gt;
I wondered if that might be the case. If I now go in and change that setting, what will happen to the second model? Will it continue to run until it's finished, or will it sit there until the first one is finished and then continue, or is it okay to cancel one of the models - and if so, how do I do that?

&gt; &gt; BOINC recognizes HT processors as 2 processors and will run one model per
&gt; CPU.
&gt; &gt; The old version would only run 1. This seems to be what you are seeing.
&gt; If you
&gt; &gt; only want to run one at a time you can set maximum number of CPUs to 1.
&gt; &gt; <br>John Keck -- BOINCing since 2002/12/08 -- <a>
&gt; href="http://www.boinc.dk/index.php?page=user_statistics&amp;project=cpdn&amp;userid=191"&gt;<img>
&gt; border="0" height="80" src="http://191.cpdn.sig.boinc.dk?188"&gt;</a>
&gt; &gt;
&gt; &gt;
&gt; I wondered if that might be the case. If I now go in and change that setting,
&gt; what will happen to the second model? Will it continue to run until it's
&gt; finished, or will it sit there until the first one is finished and then
&gt; continue, or is it okay to cancel one of the models - and if so, how do I do
&gt; that?
&gt;
&gt;
On reflection, there isn't a problem with running two models on the machine when I am not using it. I currently have the preferences set to suspend the model when I'm doing anything else on the computer, but running one model at such times is not really a problem. Can I manually suspend one model, and not the other, I wonder? The only problem there is remembering to unsuspend it when I stop using the computer for anything else.

In your case I would make BOINC run only 1 model at a time. It will complete that one faster than when running 2 and you won't have to think about starting and stopping stuff.

When you alter you settings to 1-model-only-mode the client will wait untill next trickle (or untill you press "update prefs") and will then pause model 2 untill model 1 is finished - so you won't loose any work.

&gt; In your case I would make BOINC run only 1 model at a time. It will complete
&gt; that one faster than when running 2 and you won't have to think about starting
&gt; and stopping stuff.
&gt;
&gt; When you alter you settings to 1-model-only-mode the client will wait untill
&gt; next trickle (or untill you press "update prefs") and will then pause model 2
&gt; untill model 1 is finished - so you won't loose any work.
&gt;

Thanks for the info.

I don't think the CPU load that CPDN causes should slow down your other computer use significantly even if you run two models at once. Of course it does hog twice the memory, though, and 2 x ~40 MiB may be too much. Your call.