+- +-
Say hello if visiting :) by Gecko
11 Jan 2023, 07:43:05 pm

Seti is down again by Mike
09 Aug 2017, 10:02:44 am

Some considerations regarding OpenCL MultiBeam app tuning from algorithm view by Raistmer
11 Dec 2016, 06:30:56 am

Loading APU to the limit: performance considerations by Mike
05 Nov 2016, 06:49:26 am

Better sleep on Windows - new round by Raistmer
26 Aug 2016, 02:02:31 pm

Author Topic: High duration workunits with result overflow  (Read 8427 times)

Offline sunu

  • Alpha Tester
  • Knight who says 'Ni!'
  • ***
  • Posts: 771
High duration workunits with result overflow
« on: 15 Aug 2007, 12:38:36 pm »
With the new 2.4 Win32  Chicken soup I'm seeing very high duration workunits that end up with result overflows.

Usually workunits with result overflows are discarded after a few seconds/minutes of computation. Now I am seeing many workunits with 15000+ sec computation times ending with result overflows giving me only 0.x credits.

Check this workunit http://setiathome.berkeley.edu/workunit.php?wuid=147539615

If you see both results, we are both using Chicken optimized apps. Mine is the P4 2.8 Ghz. The second result is from a C2D E6600 and it took him almost 11000 sec for this workunit and we ended up getting 0.43 credits!!!

Is there something wrong with the new apps?

I have many others such as  this one that are waiting validation. Check this http://setiathome.berkeley.edu/results.php?hostid=3690316&offset=20
« Last Edit: 15 Aug 2007, 12:57:32 pm by sunu »

Offline Richard Haselgrove

  • Messenger Pigeon
  • Knight who says 'Ni!'
  • *****
  • Posts: 2819
Re: High duration workunits with result overflow
« Reply #1 on: 15 Aug 2007, 01:01:14 pm »
Joe Segur has been looking into something similar for us on the main SETI board:

http://setiathome.berkeley.edu/forum_thread.php?id=41541&nowrap=true#619629

If your WU data has the same characteristic - negative <triplet_thresh> - then it's a splitter problem, not an application problem.

Joe's extremely good advice is to suspend any such workunits, until the project can cancel them: if you abort them, they'll just get re-issued to some other poor unsuspecting sucker!

Offline sunu

  • Alpha Tester
  • Knight who says 'Ni!'
  • ***
  • Posts: 771
Re: High duration workunits with result overflow
« Reply #2 on: 15 Aug 2007, 01:17:25 pm »
I also just saw that thread. This isn't a chicken thing.

Well, we just have to wait for the little quirks of multibeam workunits to get ironed out.  :)

Offline michael37

  • Knight o' The Round Table
  • ***
  • Posts: 137
Re: High duration workunits with result overflow
« Reply #3 on: 18 Aug 2007, 01:48:42 am »
Nothing but lots of frustration with these workunits :)

 

Welcome, Guest.
Please login or register.
 
 
 
Forgot your password?
Members
Total Members: 97
Latest: ToeBee
New This Month: 0
New This Week: 0
New Today: 0
Stats
Total Posts: 59559
Total Topics: 1672
Most Online Today: 355
Most Online Ever: 983
(20 Jan 2020, 03:17:55 pm)
Users Online
Members: 0
Guests: 133
Total: 133
Powered by EzPortal