3 minutes and 19 seconds per WU!

Message boards : Number crunching : 3 minutes and 19 seconds per WU!
Message board moderation

To post messages, you must log in.

AuthorMessage
DanielPharos

Send message
Joined: 12 May 03
Posts: 8
Credit: 58,255
RAC: 0
Netherlands
Message 50403 - Posted: 1 Dec 2004, 11:14:22 UTC

Look at me! I've got a quantum computer :-)

One WU was completed in 3 minutes and 19 seconds. Other WUs are normal... a few hours. Did I somehow received a broken WU? I mean, this simply isn't possible, is it?

ID: 50403 · Report as offensive
Profile SuperNova

Send message
Joined: 3 Apr 99
Posts: 15
Credit: 1,569
RAC: 0
United States
Message 50405 - Posted: 1 Dec 2004, 11:20:46 UTC - in response to Message 50403.  

> Look at me! I've got a quantum computer :-)
>
> One WU was completed in 3 minutes and 19 seconds. Other WUs are normal... a
> few hours. Did I somehow received a broken WU? I mean, this simply isn't
> possible, is it?
>

IT is possible. Look at this WU:

http://setiweb.ssl.berkeley.edu/workunit.php?wuid=5068229

Some workunits have a huge amount of noise, and the WU cannot be processed. If this is the case, then the application will usually throw away the WU. In BOINC it seems like you get a very small amount of credit if this happens. In classic SETI, SETI Spy would often report 100 spikes or more for such a WU within a few minutes of processing.
<p>
<img src="http://www.infinisoft.34sp.com/boinc/signature.php?project=sah&amp;id=7813418" border="0" />
</p>
ID: 50405 · Report as offensive
Profile 3quarks

Send message
Joined: 19 Jun 03
Posts: 95
Credit: 354,773
RAC: 0
United Kingdom
Message 50433 - Posted: 1 Dec 2004, 15:57:22 UTC - in response to Message 50405.  
Last modified: 1 Dec 2004, 15:59:16 UTC

> > Look at me! I've got a quantum computer :-)
> >
> > One WU was completed in 3 minutes and 19 seconds. Other WUs are normal...
> a
> > few hours. Did I somehow received a broken WU? I mean, this simply isn't
> > possible, is it?
> >
>
> IT is possible. Look at this WU:
>
> <a> href="http://setiweb.ssl.berkeley.edu/workunit.php?wuid=5068229">http://setiweb.ssl.berkeley.edu/workunit.php?wuid=5068229[/url]
>


My credit's smaller than yours, completed in under a minute by one cruncher.
So who's got the smallest credit then?


ID: 50433 · Report as offensive
Profile ralic
Volunteer tester

Send message
Joined: 6 Jan 00
Posts: 308
Credit: 274,230
RAC: 0
Message 50436 - Posted: 1 Dec 2004, 16:21:09 UTC - in response to Message 50433.  
Last modified: 1 Dec 2004, 16:21:44 UTC

> So who's got the smallest credit then?

Right now, 0.16 but I have previously seen 0.00 (valid) if the time taken is only a few seconds. There will be others with 0.00 I'm sure, but I've none in my results list atm. :)
ID: 50436 · Report as offensive
Profile Thierry Van Driessche
Volunteer tester
Avatar

Send message
Joined: 20 Aug 02
Posts: 3083
Credit: 150,096
RAC: 0
Belgium
Message 50437 - Posted: 1 Dec 2004, 16:22:57 UTC
Last modified: 1 Dec 2004, 16:24:09 UTC

If this can be count as a crunched one I don't know, but it has been detected as

SETI@Home Informational message -9 result_overflow
NOTE: The number of results detected exceeds the storage space allocated.


Crunched in 00:00 seconds by my P4 2.4@2.88GHz.
ID: 50437 · Report as offensive
Profile Daniel Michel
Volunteer tester
Avatar

Send message
Joined: 2 Feb 04
Posts: 14925
Credit: 1,378,607
RAC: 6
United States
Message 50458 - Posted: 1 Dec 2004, 19:22:33 UTC
Last modified: 1 Dec 2004, 20:31:43 UTC

i thought something was wrong with my computer...but i see mine is not an isolated case...i have several WU's with fractional credit (less than one)...all completed in about 3 minutes...the smallest credit i've recieved is .17 i've had two that size.

PROUD TO BE TFFE!
ID: 50458 · Report as offensive
Profile Richard M
Volunteer tester
Avatar

Send message
Joined: 24 May 99
Posts: 64
Credit: 265,847
RAC: 0
United States
Message 50460 - Posted: 1 Dec 2004, 19:58:03 UTC
Last modified: 1 Dec 2004, 19:58:37 UTC

Here's a low one! My machine asked for .07 but got less. ;)

http://setiweb.ssl.berkeley.edu/workunit.php?wuid=4828860
Click the Sig!

BOINC Wiki
ID: 50460 · Report as offensive
Profile SuperNova

Send message
Joined: 3 Apr 99
Posts: 15
Credit: 1,569
RAC: 0
United States
Message 50471 - Posted: 1 Dec 2004, 21:03:44 UTC

Here's another one I got that oddly enough was processed near the same time as the one in my previous post. My computer spent 0 seconds on it and requested 0 credits. The other crunchers seemed to have claimed some credit on it so I got some anyway.

Workunit 5068227

Looked in stderr.txt and they say also:
The number of results detected exceeds the storage space allocated.

Processing these WUs at least gets the "bad" ones out of the available workunit queue.
<p>
<img src="http://www.infinisoft.34sp.com/boinc/signature.php?project=sah&amp;id=7813418" border="0" />
</p>
ID: 50471 · Report as offensive
DanielPharos

Send message
Joined: 12 May 03
Posts: 8
Credit: 58,255
RAC: 0
Netherlands
Message 56220 - Posted: 21 Dec 2004, 10:22:42 UTC

I know many WUs get mutilated by certain PCs, but look at this one, this one of mine ;)

http://setiweb.ssl.berkeley.edu/workunit.php?wuid=1270022

I and somebody else returned normal results and normally claimed credits. The other guy got no credit at all. I'm still pending... The workunit stats 'error: Too many total results'. One resultID, with NO host stated 'outcome: Didn't need'. Two validation errors, and one client is downloading this workunit of a week now?!? And of course someone was able to crunch it in a little more then 600 seconds, while all the others had to spend at least 10000 seconds on it.

Just a question, is this normal to happen? I'm not complaining about it, but my PC spend some time on it and I hate to see it go to waste.

PS I know, i know, should have started a new thread...
ID: 56220 · Report as offensive
atotos
Volunteer tester
Avatar

Send message
Joined: 23 Feb 02
Posts: 51
Credit: 11,930
RAC: 0
Spain
Message 56681 - Posted: 23 Dec 2004, 11:16:25 UTC


Currently my smallest credit is 0.30 for 160.67 sec. to finish a unit.

Fot the "too many results" error I just started a new thread

http://setiweb.ssl.berkeley.edu/forum_thread.php?id=7486
WinXP Home, P4 3.2GHz HT, 512Mb RAM. Running SETI, Predictor, Prime Grid, SIMAP, Folding
ID: 56681 · Report as offensive

Message boards : Number crunching : 3 minutes and 19 seconds per WU!


 
©2024 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.