Seti@Home optimized science apps and information

Optimized Seti@Home apps => Discussion Forum => Topic started by: michael37 on 17 Aug 2007, 01:35:05 am

Title: Ouch! New workunits take three times more time and give NO credit
Post by: michael37 on 17 Aug 2007, 01:35:05 am: I just ran into a few MB(?) workunits with AR ~1.48 which take EXCEEDINGLY long amount of time and produce literally no credit. Ouch, that hurts! Is that normal? What's going on???

Here is a workunit that took 30,000 seconds. For comparison, a normal 0.42 linefeed workunit takes about 8000 seconds to crunch on this computer.

Code: [Select]
CPU time 30737.35721 stderr out <core_client_version>5.8.16</core_client_version> <![CDATA[ <stderr_txt> Optimized SETI@Home Enhanced application Optimizers: Ben Herndon, Josef Segur, Alex Kan, Simon Zadra Linux port: Crunch3r, Hans Dorn, Simon Zadra Version: Linux 64-bit based on S@H V5.15 'Noo? No - Ni!' Revision: R-2.4|xP|FFT:IPP_SSE3|Ben-Joe CPUID: Intel(R) Xeon(TM) CPU 2.80GHz CPUs: 2, cores: 1, cache: L1=16K, L2=1024K, L3=0K Features: MMX SSE SSE2 SSE3 x86_64 Speed: 2800 MHz Work Unit Info True angle range: 1.486459 Optimized SETI@Home Enhanced application Optimizers: Ben Herndon, Josef Segur, Alex Kan, Simon Zadra Linux port: Crunch3r, Hans Dorn, Simon Zadra Version: Linux 64-bit based on S@H V5.15 'Noo? No - Ni!' Revision: R-2.4|xP|FFT:IPP_SSE3|Ben-Joe CPUID: Intel(R) Xeon(TM) CPU 2.80GHz CPUs: 2, cores: 1, cache: L1=16K, L2=1024K, L3=0K Features: MMX SSE SSE2 SSE3 x86_64 Speed: 2800 MHz Work Unit Info True angle range: 1.486459 SETI@Home Informational message -9 result_overflow NOTE: The number of results detected exceeds the storage space allocated. Spikes Pulses Triplets Gaussians Flops 0 31 0 0 134272140666 </stderr_txt> ]]> Validate state Initial Claimed credit 0.442911575113843 Granted credit 0.442911575113843 application version 5.21
Links to workunits:
http://setiathome.berkeley.edu/result.php?resultid=591511765
http://setiathome.berkeley.edu/result.php?resultid=591511775
http://setiathome.berkeley.edu/result.php?resultid=590794475
Title: Re: Ouch! New workunits take three times more time and give NO credit
Post by: Richard Haselgrove on 17 Aug 2007, 04:31:25 am: Read the latest technical news:

http://setiathome.berkeley.edu/forum_thread.php?id=41585&nowrap=true#620572

There was a batch of bad WUs split. Not your problem, not Simon's problem. Oh, and there are other threads reporting this, both here and at SETI.
Title: Re: Ouch! New workunits take three times more time and give NO credit
Post by: michael37 on 17 Aug 2007, 08:05:13 am: Cool, thanks. I guess the language of everyone who describes the problem is different so it's hard to find matches in forums.