[ADOL-C] singularity

Andrea Walther awalther at math.uni-paderborn.de
Mon Sep 10 02:29:13 EDT 2018

Hi Giang,

> Error:LUFactorisation(..): no Pivot in step 42 (3.362427E-20)

this means that the system matrix is singular, so in the current setting
it is not possible to compute a solution of your system using
the LU factorization.

Therefore, also a perturbation of your initial values probably would not help.

It seems that this is more of a general problem.

Hope, this helps?

Best regards


Prof. Dr. Andrea Walther
Lehrstuhl fuer Mathematik und ihre Anwendungen
Institut fuer Mathematik
Universitaet Paderborn
Warburger Str. 100
33098 Paderborn

Email: andrea.walther at uni-paderborn.de
Phone: ++49 5251 602721
        ++49 5251 602724 (sekr.)
Fax:   ++49 5251 603728


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