PCNN preconditioner

[Andreas Grassl]

Hello,

I'm working with a FE-Software where I get out the element stiffness
matrices and the element-node correspondency to setup the stiffness
matrix for solving with PETSc.

Currently this is working fine for the seqaij matrix type and connected
solvers. Now I want to Implement the PCNN preconditioner.

Does anybody have any simple examples with this preconditioner?

Thank you in advance

ando

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