Re-crunching the same units?

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Angstrom

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Message 18406 - Posted: 27 Aug 2004, 21:05:02 UTC

Does anybody know if the WU's being sent out for BOINC Seti participants are also sent out on the classic site?

I noticed the last WU's I recieved were from September last year and I suspect these have already been crunched over on the classic site.
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Petit Soleil
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Message 18409 - Posted: 27 Aug 2004, 21:08:12 UTC - in response to Message 18406.  

> Does anybody know if the WU's being sent out for BOINC Seti participants are
> also sent out on the classic site?
>
> I noticed the last WU's I recieved were from September last year and I suspect
> these have already been crunched over on the classic site.
>

Of course they are. They all come from the same tapes from same antenna.
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Angstrom

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Message 18416 - Posted: 27 Aug 2004, 21:19:36 UTC
Last modified: 27 Aug 2004, 21:20:46 UTC

So although the Wu's are crunched 3 times under Boinc for verification purposes it is very likely that they have already been crunched on the classic system (possibly up to 10 times?) especially as Boinc is down for considerably more time than its up.

I'm struggling to see the point!
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Message 18419 - Posted: 27 Aug 2004, 21:28:17 UTC - in response to Message 18416.  

> So although the Wu's are crunched 3 times under Boinc for verification
> purposes it is very likely that they have already been crunched on the classic
> system (possibly up to 10 times?) especially as Boinc is down for considerably
> more time than its up.
>
> I'm struggling to see the point!
>
>
Just join another project then they won't have to do crunching overkill.
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Angstrom

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Message 18421 - Posted: 27 Aug 2004, 21:32:18 UTC

Quite so
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Heffed
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Message 18447 - Posted: 27 Aug 2004, 22:24:36 UTC - in response to Message 18416.  

> So although the Wu's are crunched 3 times under Boinc for verification
> purposes it is very likely that they have already been crunched on the classic
> system (possibly up to 10 times?) especially as Boinc is down for considerably
> more time than its up.
>
> I'm struggling to see the point!

OK, let me try to help...

One of the reasons for the new S@H application is to do more accurate analyzations of the data as new FFT techniques/resolutions are discovered. BOINC/S@H is processing the WUs differently than the classic application.

The BOINC version will also allow for work to be gathered from different telescopes and antennas. Such as the higher resolution equipment used for the Seti re-observations, which as I understand it, are going to now be processed by BOINC/Seti. Whether or not these are what are being worked on now, I can't say.

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Message boards : Number crunching : Re-crunching the same units?


 
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