Error: Insufficient Memory for LVL Allocation in FLUKA Simulation

Running and Runtime Errors
1

Dear FLUKA experts,

I am trying to run a simulation with a voxel geometry and multiple beams. However, the simulation stops immediately, and I get the following error in the .out file:

******* Stopped in ncdtrd: insufficient space for LVL allocation in blank common *******
******* 1568835 I*4 memory position available when 9633104 needed *******

It seems to be related to memory, but I couldn’t find anything about “Stopped in ncdtrd: insufficient space for LVL allocation in blank common”. Does anyone know a solution to this?

Thank you very much for your help,
Jonas
Proton_Phantom.flair (155.9 KB)

3

Dear @jonas.mahnke

Without the voxel file, is not possible to debug.

For testing I replaced it with a random .vxl file that I had lying around and the simulation worked Ok.

So my guess is that there is something in the .vxl (maybe too big dimensions) which leads to FLUKA failure.
Normally FLUKA should re-allocate the necessary memory and run, but apparently it didn’t.

Could you please provide the voxel file to test.

One option you can try is to increase the memory of FLUKA with the use of the GLOBAL card

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