Message boards : Sixtrack Application : Very short WU
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Hal Bregg
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Message 38737 - Posted: 7 May 2019, 19:41:19 UTC

I noticed that few WUs from newest batch of the new tasks are very, very short

Name	w-c0_0.000_job.B1inj_c0_0.000.3515__54__s__64.28_59.31__14.1_18.1__6__3_1_sixvf_boinc15814_0
Workunit	112300201
Run time	11 sec
CPU time	8 sec
Validate state	Valid
Credit	0.03
Device peak FLOPS	2.47 GFLOPS
Application version	SixTrack v502.05 (sse2)
windows_x86_64


I am curious why it takes less than a minute to run them.
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Profile Veronica
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Message 38738 - Posted: 7 May 2019, 20:33:51 UTC

From the job name it looks like the particles in that work unit have a large amplitude, so I expect they may have been lost in the simulation. When the particles are lost, the simulation stops early.

The simulations we send to BOINC are usually large scans of parameters, and a certain fraction of them will tend to be very short. This is just the nature of the studies we do.
SixTrack 5 Core Developer. github.com/SixTrack/SixTrack
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Hal Bregg
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Message 38746 - Posted: 8 May 2019, 6:51:57 UTC

Thank you for clarification.
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Message 39135 - Posted: 15 Jun 2019, 20:21:59 UTC - in response to Message 38738.  
Last modified: 15 Jun 2019, 20:22:10 UTC

Hi Veronica, That was very symplectic of you to explain that to us. Now if I could just get my head around 6-dimensional ;-}
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Message boards : Sixtrack Application : Very short WU


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