Really really short runtimes .

Message boards : Number crunching : Really really short runtimes .
Message board moderation

To post messages, you must log in.

AuthorMessage
Profile [FI] OIKARINEN
Volunteer tester

Send message
Joined: 7 Nov 13
Posts: 12
Credit: 477,077
RAC: 0
Finland
Message 1750113 - Posted: 18 Dec 2015, 14:19:34 UTC

Hello ! Has anybody else noticed that some workunits last between 40 seconds - 5 minutes (at least in my case) ? And I wonder , which is the reason of this ? I heard something about "noisy workunits" , I am not sure about the accurate meaning of this. However , I noticed the app quits because can't hadle more than(30) events .

Are we near the E.T or it's just a computer malfunction ? ;)

http://setiathome.berkeley.edu/result.php?resultid=4605828174

<core_client_version>7.0.36</core_client_version>
setiathome_v7 7.21 Revision: 2006 arm-linux-androideabi-g++ (GCC) 4.6 20120106 (prerelease)
libboinc: BOINC 7.2.4
Work Unit Info:
...............
WU true angle range is : 0.396149
Optimal function choices:
--------------------------------------------------------
name timing error
--------------------------------------------------------
v_BaseLineSmooth (no other)
vfp_GetPowerSpectrum 0.000742 0.00000
vfp_ChirpData 0.056096 0.00000
v_pfTranspose4 0.028478 0.00000
opt NEON folding 0.004581 0.00000
SETI@Home Informational message -9 result_overflow
NOTE: The number of results detected equals the storage space allocated.

Flopcounter: 21964711357.021652

Spike count: 30
Autocorr count: 0
Pulse count: 0
Triplet count: 0
Gaussian count: 0
08:44:17 (28832): called boinc_finish

</stderr_txt>
]]>
ID: 1750113 · Report as offensive
JLDun
Volunteer tester
Avatar

Send message
Joined: 21 Apr 06
Posts: 573
Credit: 196,101
RAC: 0
United States
Message 1750171 - Posted: 18 Dec 2015, 19:06:56 UTC - in response to Message 1750113.  

A noisy wu, or shorty, is one where this section

Spike count: 30
Autocorr count: 0
Pulse count: 0
Triplet count: 0
Gaussian count: 0

has a total of 30; it's assumed the wu has a lot of radio noise in it and 30 is used as a cutoff to stop 'wasting time' on it if there's just going to be a lot of noise....
ID: 1750171 · Report as offensive

Message boards : Number crunching : Really really short runtimes .


 
©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.