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[Question #701313]: multithreading problem

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Zhicheng Gao <question701313@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 12 Apr 2022 12:59:41 -0000
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New question #701313 on Yade:
https://answers.launchpad.net/yade/+question/701313

Hello everyone,
I use Yade's DEM-PFV method to simulate the erosion process, using multi-threaded calculation, and constantly delete some eroded particles in this process. Save the state file when the erosion lasts for a certain time, and then I study these States by reloading these state files and conducting a triaxial compression experiment.  However, the  following warning appears:

WARN  /build/yade-fDuCoe/yade-2018.02b/pkg/common/InsertionSortCollider.cpp:76 insertionSortParallel: Parallel insertion: only 6 thread(s) used. The number of bodies is probably too small for allowing more threads, or the geometry is flat. The contact detection should succeed but not all available threads are used.

However， this warning appears even when using less than 6 threads or just one thread as suggested by this warning. How to solve this problem, will this affect the correctness of the simulation results?

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