Missing umfpack

General
1

I am not a regular Linux user, so this may be a stupid question.

I am trying to run a script on an Ubuntu Linux machine (5.15.0-76-generic) and have installed ngsolve using pip3 (6.2.2304). I try

Minv=a.mat.Inverse(fes.FreeDofs(),inverse=‘umfpack’)

and get the error message

netgen.libngpy._meshing.NgException: SparseMatrix::InverseMatrix: UmfpackInverse not available

Can you help me get the necessary component for ngsolve?

Thanks
Peter

2

Hi Peter,
We didn’t yet manage to provide the pip installer with umfpack on Linux yet, but you can use pardiso instead.
Best, Christopher