Advanced search

Message boards : Number crunching : No credit past the deadline?

Author Message
B-Roy
Send message
Joined: 29 Oct 08
Posts: 1
Credit: 97,263
RAC: 0
Level

Scientific publications
wat
Message 3787 - Posted: 9 Nov 2008 | 22:05:15 UTC
Last modified: 9 Nov 2008 | 22:06:17 UTC

I just finished my first wu here (http://www.gpugrid.net/results.php?userid=8839) and it was returned past the deadline. unfortunately, I did not get any credit for it although the wu was a success. could you please tell me whether this is the case for all wus that are returned too late, as I will need to stop crunching for this project as my graphic card seems to slow in that case?
____________

Scott Brown
Send message
Joined: 21 Oct 08
Posts: 144
Credit: 2,973,555
RAC: 0
Level
Ala
Scientific publications
watwatwatwatwatwat
Message 3789 - Posted: 10 Nov 2008 | 3:55:35 UTC - in response to Message 3787.

I believe that the answer is yes regarding no credit for late returned workunits.

Your 8600GT is below the recommended speed for the project, so it is likely that you will return work late much of the time. I am afraid that the only way you will make it under the 4-day deadline is to run the GPU 24/7 without gameplay or other GPU intensive tasks. If you do that, I think it can return work in 3-4 days.

computerguy09
Send message
Joined: 20 Aug 08
Posts: 10
Credit: 15,789,768
RAC: 0
Level
Pro
Scientific publications
watwatwatwatwatwatwatwat
Message 3822 - Posted: 13 Nov 2008 | 13:38:14 UTC - in response to Message 3789.

I think the answer is "It depends".

A WU is sent to, at least, 2 crunchers. If the deadline for you to return the WU is past, the scheduler on the server sends out a WU to a third PC. If you return the WU late, but before that third cruncher returns their WU, then you probably will get credit for it.

I've had several WU's that were returned late by a few hours and still got credit for them. However, if it was a day late, and the second and third crunchers returned their WU's, then I did NOT get credit.

Mark

Carsten Milkau
Send message
Joined: 7 Feb 09
Posts: 11
Credit: 5,723,515
RAC: 0
Level
Ser
Scientific publications
watwatwatwatwatwatwatwatwatwatwat
Message 7132 - Posted: 3 Mar 2009 | 14:23:24 UTC - in response to Message 3822.

Couldn't you shift the deadline for a day or two? That wouldn't harm the overall ocmputation too much and it would allow to make use of the older cards as well (in fact, it could speed up overall computation if those cards head a better chance to reply in time)

Profile Paul D. Buck
Send message
Joined: 9 Jun 08
Posts: 1050
Credit: 37,321,185
RAC: 0
Level
Val
Scientific publications
watwatwatwatwatwatwatwatwatwat
Message 7160 - Posted: 4 Mar 2009 | 10:22:35 UTC - in response to Message 7132.

Couldn't you shift the deadline for a day or two? That wouldn't harm the overall ocmputation too much and it would allow to make use of the older cards as well (in fact, it could speed up overall computation if those cards head a better chance to reply in time)

The problem is that then people would try slower cards and the issue would remain the same ... can we move the deadline out two more days ...

Because new tasks depend on work returned extending the deadline causes problems in keeping work flowing. Milky Way has similar issues, though their tasks run more quickly ...

Post to thread

Message boards : Number crunching : No credit past the deadline?

//