Seti@Home optimized science apps and information

Optimized Seti@Home apps => Windows => Topic started by: Idefix on 14 Aug 2007, 06:34:28 pm

Title: KWSN-2.4-Windows32-SSE doesn't show any effect
Post by: Idefix on 14 Aug 2007, 06:34:28 pm

Hello optimizers,

since the release of the new SETI application I've crunched a few workunits on my Athlon XP 2000+. I compared the CPU times of the SSE optimized app (KWSN-2.4-Windows32-SSE) and the stock app. I was very surprised ...

The CPU times are nearly the same:

5.27 stock app: result #588642713 (http://setiathome.berkeley.edu/result.php?resultid=588642713), AR 0.405761, CPU time: 24909 secs

KWSN-2.4-Windows32-SSE: result #588642787 (http://setiathome.berkeley.edu/result.php?resultid=588642787), AR 0.405878, CPU time: 25166 secs

I thought that at least the use of the available instruction sets would make things faster. Are you sure that you have enabled the use of the SSE instructions ...? ;-)

Regards,
Carsten

Title: Re: KWSN-2.4-Windows32-SSE doesn't show any effect
Post by: Simon on 14 Aug 2007, 07:09:21 pm

Yeah,

I'm sure :) However, there will shortly be new 2.4 32-bit Windows apps, so we can check whether the situation improves then.

Regards,
Simon.

Title: Re: KWSN-2.4-Windows32-SSE doesn't show any effect
Post by: Idefix on 15 Aug 2007, 02:41:02 am

Hello Simon,

thank you for your answer and for the nice work you and the other optimizers are doing. So, let's keep our fingers crossed ... :-)

Do you have an explanation why the SSE optimizations doesn't show an effect at the moment?

Regards,
Carsten