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Question stuck simulation 

Forum: Event and Track Management
Date: 17 Mar, 2011
From: Gergely Soti <Gergely Soti>

Dear all,

In my simulation (Geant4 9.0 on openSuse 11.3) I record electron spectra in a setup with a magnetic field. So far sometimes happened that a track gets stuck between two volumes, so in my SteppingAction I check the number of steps together with the length of the track. If it is too long or if there are too much steps in a track then I kill that one.

Still, my simulation gets stuck sometimes. If I re-run that particular event with verbose tracking, I do not see anything extraordinary. This is the last 40 lines from the output of /tracking/verbose 1 I can see that the track gets stuck, but the simulation never goes beyond Step 2390. The processor is 100% in use, so the simulation is running, but I don't know what is it doing.

Does anyone has ideas on how to solve this?

thank you in advance, Gergely

 2352  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV 7.47e+04 fm   61.9 cm        World  Transportation
 2353  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2354  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm        World  Transportation
 2355  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2356  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV   4.76 Ang  61.9 cm        World  Transportation
 2357  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2358  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm        World  Transportation
 2359  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2360  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV   4.76 Ang  61.9 cm        World  Transportation
 2361  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2362  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm        World  Transportation
 2363  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2364  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV   4.76 Ang  61.9 cm        World  Transportation
 2365  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV 3.09e+04 fm   61.9 cm        World  Transportation
 2366  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2367  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm        World  Transportation
 2368  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2369  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV   4.76 Ang  61.9 cm        World  Transportation
 2370  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2371  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm        World  Transportation
 2372  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2373  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV   4.76 Ang  61.9 cm        World  Transportation
 2374  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2375  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm        World  Transportation
 2376  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2377  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV   4.76 Ang  61.9 cm        World  Transportation
 2378  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV 3.15e+04 fm   61.9 cm        World  Transportation
 2379  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2380  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm        World  Transportation
 2381  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2382  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV   4.76 Ang  61.9 cm        World  Transportation
 2383  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2384  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm        World  Transportation
 2385  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2386  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV   4.76 Ang  61.9 cm        World  Transportation
 2387  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2388  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm        World  Transportation
 2389  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV      0 fm   61.9 cm       Shield  Transportation
 2390  -2.34 cm   6.82 mm  -5.35 cm      2 keV     0 eV   4.76 Ang  61.9 cm        World  Transportation

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1 None: Re: stuck simulation   (Makoto Asai - 24 Mar, 2011)
(_ None: Re: stuck simulation   (Gergely Soti - 30 Mar, 2011)
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