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[Luc Scholtès <question659557@xxxxxxxxxxxxxxxxxxxxx>]

Question #659557 on Yade changed:
https://answers.launchpad.net/yade/+question/659557

    Status: Solved => Open

Luc Scholtès is still having a problem:
Hi,

Just to confirm that I don't have the random behavior with yade
2017.10.a as mentioned by Lingran. Why? I have no idea but I'll stick to
this version for now on.

However, this version does not allow to run simulations with
DFNFlowEngine as it produces a segfault as soon as a crack or fracture
is present in the medium. I managed to avoid the segfault by modifying
the trickPermeability() function which was at the origin of the
segfault. However, now, when a cell is identified as cracked (and so its
permeability is modified/increased with respect to the non cracked
cells), I get this warning:

CHOLMOD warning: matrix not positive definite
something went wrong in Cholesky factorization, use LDLt as fallback this time1

and the flow computation is wrong.

Any idea where I should look at for this particular issue?

Luc

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