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Forum: Fields: Magnetic and Otherwise
Date: 07 May, 2015
From: bilal <bilal>

Hello everyone,

I posted my problem earlier to the multithreaded forum because i thought the problem has to do something with the multithreading. I am using Geant4.10.01 in multithreading mode.

I run a monoenergetic beam (medical accelerator with small field size) and score doses in voxelized phantom. Total voxels are close to 30 million. I also apply a global magnetic field of 1.5T.

Without the magnetic field i can run 1e9 particles without any problem. As I turn the magnetic field ON i can run 1e7 particles no problem. But if i submit 5 identical jobs with 1e8 particles on five different nodes of a cluster (dosen't necessarily has to be a cluster any computer), one or two of them are completed and the other ones just go into an infinite loop at the end of the simulation. I have noticed that if e.g. i have 5 threads then 3 or 4 complete their job and they wait indenfinately for the 1-2 threads to complete and finally dump all the data (I use command based scores to create 3D grid for scoring). Like i said this happens with the magnetic field turned ON.

I would highly appreciate any help in this regard.

Thanks
Bilal

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1 More: Re: Infinite Loop or something similar   (bilal - 15 May, 2015)
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