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[Question #691644]: BrokenPipeError when use multiprocessing pool in FEM╳DEM

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From: Wang Yu <question691644@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 02 Jul 2020 16:20:47 -0000
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New question #691644 on Yade:
https://answers.launchpad.net/yade/+question/691644

Dear all,

In the FEM╳DEM simulation(/examples/FEM╳DEM/triaxialRough.py),  I met  "BrokenPipeError: [Errno 32] Broken pipe" when use multiprocessing pool in python(due to a mass of RVE packings).

My domain of simulation is 3D.  I found that the multiprocessing pool work successful when my RVE packing is small enough, but when I use an RVE of more than 1000 particles(mean radius=0.005), the error code will appear (BrokenPipeError: [Errno 32] Broken pipe)and the simulation would stop.

With my poor understanding of multiprocessing library,  I guess this is probably due to too many particles leading to too much data. In addition, I use cohesive particle model in RVEpacking.

Could anyone help me with this problem?
Thank you for attention





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