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[Getfem-users] problem with and

From: GUITON Martin
Subject: [Getfem-users] problem with and
Date: Wed, 3 Jan 2018 16:38:36 +0000

Good evening,


Having just installed getfem with python interface, I tried to run the demo python files and I am facing divergence problems for the two following files : and

·         For demo_wheel_contact, the output ends with  


Level 1 Warning in, line 217: SuperLU solve failed: info =7401

Singular tangent matrix: perturbation of the state vector

Singular tangent matrix: perturbation failed, aborting.

('alpha_D = ', -1.7013307862685368e-50)


·         For demo_tripod, I obtain:


Level 2 Warning in ../../src/gmm/gmm_precond_ilu.h, line 182: pivot 404 is too small

Level 2 Warning in ../../src/getfem/getfem_model_solvers.h, line 105: gmres did not converge!


To be noticed, the tests with make test have passed.

If you have an idea of a way to solve it, could you please let me know ?


Martin Guiton


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