Backwards-compatible implementation. Legacy parameter names
e.g. PreconditionerIterations will still work but subgroup params
overwrite them, e.g. Preconditioner.Iterations.

Markus Blatt authored 5 years ago and Timo Koch committed 5 years ago

This requires a version newer than 2.7.0. The backend translates
the configuration parameters from Dumux CamelCase to the dune-istl
names. If a Dumux parameter is not found we fall back to using
the dune-istl parameter name.

We fall back to the parallel AMG backend if the DUNE version is
not sufficient.

Feature/remove amg deprecation warnings

See merge request !1869

Reorder staggered matrix

Closes #804

See merge request !1877

Kilian Weishaupt authored 5 years ago and Ned Coltman committed 5 years ago

* change order in partial()
* change order in assembler

Kilian Weishaupt authored 5 years ago and Ned Coltman committed 5 years ago

* comply with literature standard

* previous matrix was [ccToCC   ccToFace
                       faceToCC faceToFace]

* new matrix is [faceToFace faceToCC
                 ccToFace    ccToCC]

* arrangement of coupling sub-domains and classes had to be revised
* changes should be backwards compatible, deprecation warning is emitted

Kilian Weishaupt authored 5 years ago and Ned Coltman committed 5 years ago

* check if type is correct (Scalar)