[Trilinos-Users] [EXTERNAL] DOF manager

Cyr, Eric C eccyr at sandia.gov
Mon Oct 28 08:20:14 MDT 2013


I apologize for the delay, I've been away on personal time for a few weeks and have not been as responsive as usual.

The parallel aspects of DG are fairly straightforward, given a list of cell IDs generate a list of unique indices. Further low-order, say 2nd, integration rules are straightforward (needed to support some lower order basis functions). Higher-order are more difficult because you need to match integration points across the face. We don't yet have a tool in Trilinos for this (as its primarily a local operation, Intrepid would be a good place for it. But no such capability yet exists). I would love to have one…

Again, I'm not sure where this leaves you, it would be nice to find a way to integrate such a capability. If you know of a similar capability that exists elsewhere (in open source) it might be good to look into and see what is needed for a generic tool.


From: Carlos Breviglieri <carbrevi at gmail.com<mailto:carbrevi at gmail.com>>
Date: Wednesday, October 16, 2013 9:58 AM
To: "trilinos-users at software.sandia.gov<mailto:trilinos-users at software.sandia.gov>" <trilinos-users at software.sandia.gov<mailto:trilinos-users at software.sandia.gov>>
Subject: [EXTERNAL] [Trilinos-Users] DOF manager

Hello, I am investigating the options for a DOF manager class/package and would like some input, based on the the following:

- handles unstructured meshes, possibly with different topologies (tri+quad,tetra+prism+pyra+hex)
- parallel support
- handles high-order basis and elements
- mixed discretization would be a plus but not required

I have a Discontinuous Galerkin CFD application written using Intrepid with a simple dof manager object for homogeneous 2D meshes. I have considered the FEI package but I would likely have to change a lot things and it also seems outdated, not so integrated with Trilinos. FYI, I plan to use AztecOO or Belos.

I've checked the STK linsys classes but that brings a lot of STK dependencies from what I can tell. I am currently using MOAB for mesh database.


Carlos Breviglieri
Instituto Tecnologico de Aeronautica

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