Why this WU validation is inconclusive?


Advanced search

Message boards : Number crunching : Why this WU validation is inconclusive?
Message board moderation

To post messages, you must log in.

AuthorMessage
juan BFP Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 16 Mar 07
Posts: 9786
Credit: 572,710,851
RAC: 3,799
Panama
Message 2046626 - Posted: 23 Apr 2020, 22:37:15 UTC

https://setiathome.berkeley.edu/workunit.php?wuid=3953928229

I always wish to ask this, and i foun one example now.

I now they both ends on an overflow, but all the numbers match, at least for my untrained eyes.

Can anyone explain why the WU is Completed, validation inconclusive?

Thanks in advance.
ID: 2046626 · Report as offensive     Reply Quote
Profile Keith T.
Volunteer tester
Avatar

Send message
Joined: 23 Aug 99
Posts: 962
Credit: 537,293
RAC: 9
United Kingdom
Message 2046633 - Posted: 23 Apr 2020, 23:09:36 UTC - in response to Message 2046626.  

It's usually because 2 different GPU s got very slightly different overflow results

I see that in this case one is GPU and the 2nd result returned is CPU

One of the other tasks should be a tie-breaker.
ID: 2046633 · Report as offensive     Reply Quote
juan BFP Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 16 Mar 07
Posts: 9786
Credit: 572,710,851
RAC: 3,799
Panama
Message 2046638 - Posted: 23 Apr 2020, 23:25:47 UTC - in response to Message 2046633.  

It's usually because 2 different GPU s got very slightly different overflow results

I see that in this case one is GPU and the 2nd result returned is CPU

One of the other tasks should be a tie-breaker.

But an overflow is an overflow no matter from where it comes GPU/CPU.
The data is not valid anyway.
ID: 2046638 · Report as offensive     Reply Quote
Profile Keith Myers Special Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 29 Apr 01
Posts: 13164
Credit: 1,160,866,277
RAC: 1,873
United States
Message 2046644 - Posted: 23 Apr 2020, 23:55:57 UTC - in response to Message 2046638.  

Because the results DON'T match
Best triplet: peak=11.89081
Best triplet: peak=11.89084
Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)
ID: 2046644 · Report as offensive     Reply Quote
juan BFP Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 16 Mar 07
Posts: 9786
Credit: 572,710,851
RAC: 3,799
Panama
Message 2046648 - Posted: 24 Apr 2020, 0:00:11 UTC - in response to Message 2046644.  

Because the results DON'T match
Best triplet: peak=11.89081
Best triplet: peak=11.89084

What about the "strongly similar"?
ID: 2046648 · Report as offensive     Reply Quote
Richard Haselgrove Project Donor
Volunteer tester

Send message
Joined: 4 Jul 99
Posts: 14680
Credit: 200,643,578
RAC: 874
United Kingdom
Message 2046693 - Posted: 24 Apr 2020, 5:50:37 UTC - in response to Message 2046626.  

https://setiathome.berkeley.edu/workunit.php?wuid=3953928229

I always wish to ask this, and i foun one example now.

I now they both ends on an overflow, but all the numbers match, at least for my untrained eyes.

Can anyone explain why the WU is Completed, validation inconclusive?
In normal times, because each of the 30 signals has to have a matching signal in the wingmate's result, matching to several decimal places on each of the metrics.

But at the moment, it's easier than that: every overflow is being triple-checked, because of the GPU driver problems.
ID: 2046693 · Report as offensive     Reply Quote

Message boards : Number crunching : Why this WU validation is inconclusive?


 
©2025 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.