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CHOLMOD error: the same question to 241071

Asked by liucheng83

Hi, everyone.

I have the same questions about CHOLMOD error when using Flowengine as https://answers.launchpad.net/yade/+question/241071, everything are similar.
But I do not know how to solve it .

------------------------------------
....
20002 : Vh==NULL!! id=20002 Point=0.0970011 0.107723 0.0096918 rad=0.00285875
20003 : Vh==NULL!! id=20003 Point=-0.197146 0.0352237 0.0659947 rad=0.00285861
20004 : Vh==NULL!! id=20004 Point=0.153223 0.051602 0.0806164 rad=0.00285847
20005 : Vh==NULL!! id=20005 Point=-0.065848 -0.128071 0.0327707 rad=0.00285833
CHOLMOD error: invalid xtype
CHOLMOD error: argument missing
Segmentation fault (core dumped)

---------------------------------

If you need to see my code, I can also provide it.

Many thanks,
Cheng Liu

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Solved by:
Bruno Chareyre
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liucheng83 (lcheng83) said : 		#1

And some additional information is here
-----------------------
negative volume for an ordinary pore (temp warning, should still be safe)
1991 : Vh==NULL!! id=1991 Point=-45.3633 -0.700952 4.588 rad=0.0194403
CHOLMOD error: invalid xtype
CHOLMOD error: argument missing
Segmentation fault (core dumped)
-----------
What these information can tell us?

Revision history for this message
Best Bruno Chareyre (bruno-chareyre) said : 		#2

Hi
Vh==NULL usually is the result of overlapping spheres in the problem (not allowed).
Here, the list of ids 20002, 20003, ... makes me wonder if they are not boxes bounding the problem instead of simple spheres.
If so those numbers should be defined in flow.wallIds=[20002,20003,...].

Bruno

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liucheng83 (lcheng83) said : 		#3

Hi, Bruno

I will try a new test to find whether It Is the case you said. Just wait my moderation. Sorry for late reply.

Cheng

Revision history for this message
liucheng83 (lcheng83) said : 		#4

Thanks Bruno Chareyre, that solved my question.