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Jonathan Guyer edited this page Sep 26, 2014 · 1 revision

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MULTIGRID and ADAPTIVE MESHING

This page is to figure out what we have to do to fipy to get multigrid and adaptinve meshing working.

Questions that need answering

  • Should we pull in an algebraic multigrid solver before
embarking on a geometric multigrid?
  • Is it useful to implement geometric multigrid without
having adaptive griding?
  • Have we noticed a trend in code use in the phase field
community?

Review of packages

The first step has to be to figure out which code base to start from. Are they Python wrapped? How would they fit in? Would it require updating Variable, Mesh and Terms in a big way? Can the package work mostly inside our paradigm?

!PyTrilinos

http://software.sandia.gov/trilinos/packages/pytrilinos/

Trilinos comes with the ML package that Roman wrapped at one point and so is probably worth looking at.

MG net

http://www.mgnet.org/

Paramesh

http://www.physics.drexel.edu/~olson/paramesh-doc/Users_manual/amr.html http://www.physics.drexel.edu/~olson/paramesh-doc/Users_manual/multigrid.html http://sourceforge.net/projects/paramesh/

The multigrid support is still new. Distributed under the NASA license, like NIST probably. Licence is completly open.

Chombo

http://seesar.lbl.gov/ANAG/chombo/

Not Python.

!PyTrilinos

http://software.sandia.gov/trilinos/packages/pytrilinos/index.html

Has mutigrid and python wrappers

Pyro

http://www.ucolick.org/~zingale/pyro/

Gerris

http://gfs.sourceforge.net/

Has multigrid.

PETSc

http://www-unix.mcs.anl.gov/petsc/petsc-as/

Don't see any multigrid solvers in Petc.

Other Resources

Need a link here [wiki:StoreHere]

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