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Sulphur model - weak performance

Sulphur model - weak performance

Questions and Answers : Windows : Sulphur model - weak performance
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old_user201

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Message 17878 - Posted: 7 Dec 2005, 22:18:16 UTC

Hello everyone,

I have a small problem with my new Sulphur WU. On the \"old\" WUs I had an average of about 1.8 sec/TS. With the new model it\'s about 3.8 sec/TS.

IMHO that\'s a very big change and I have no idea why. The system is the same, no new hardware.

Is this typical or is there a problem with my PC or the WU?

Greetings from Austria
Joe

PS: Sorry for my bad english, I\'ll try to improve it. ;-)
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crandles
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Message 17880 - Posted: 7 Dec 2005, 22:46:27 UTC
Last modified: 7 Dec 2005, 22:47:56 UTC

One is a slab model and the other is a sulphur model.

See <a href=\"http://boinc-doc.net/boinc-wiki/index.php?title=Sulphur_Cycle\">wiki</a> which explains timesteps take about 70% longer because the model is doing more calculations related to sulphur. This 70% figure can vary a bit from computer to computer but 1.8 to 3.8 is a bit too much of a slow down. However, looking at your trickles 1.92 to 3.75 is more like what it should be though still a little high.

The model is also 5 phases rather than 3 so the time to completion goes up by much more than 70%.

HTH
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old_user201

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Message 17881 - Posted: 7 Dec 2005, 22:59:14 UTC - in response to Message 17880.  

Thanks for your answer. I know that sulphur-models takes more time to complete, but i couldn\'t imagine that it would be such a big increase. Well, maybe it\'s only a temporary performance problem and gets better in the future.

Greetings Joe
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Message 17895 - Posted: 8 Dec 2005, 13:45:55 UTC - in response to Message 17881.  

Thanks for your answer. I know that sulphur-models takes more time to complete, but i couldn\'t imagine that it would be such a big increase. Well, maybe it\'s only a temporary performance problem and gets better in the future.

Greetings Joe


From my exp the sulpher model runs at from 3.9 to 3.1 sec/ts depending on what stage its at. Phase, trickle etc.

This is on a P4 2.66 with 1gb ram that run a slab at about 2.2 sec/ts.

Hope this helps.
cheers
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Questions and Answers : Windows : Sulphur model - weak performance

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