[Trilinos-Users] [EXTERNAL] Re: Mesh and DOF management with trilinos

[Sjaardema, Gregory D]

SEACAS documentation, specifically exodusII and ioss are best found at http://gsjaardema.github.io/seacas/  If you search on the page, there should be a section for exodusII and a section for Ioss.  The documentation is somewhat out-of-date and for Ioss is not complete, but it might give you a start.

You can either use Ioss directly to read an exodus file and then populate your data structures, or you can use stk and stk_io which uses Ioss and then populate your data structures from stk's data structures.

If you have any questions about seacas, ioss, and/or exodus, please let me know.
..Greg

--
"A supercomputer is a device for turning compute-bound problems into I/O-bound problems"

From: Trilinos-Users <trilinos-users-bounces at trilinos.org<mailto:trilinos-users-bounces at trilinos.org>> on behalf of Dharmendar Reddy <dharmareddy84 at gmail.com<mailto:dharmareddy84 at gmail.com>>
Date: Tuesday, February 16, 2016 at 1:18 PM
To: juan <juan at tf.uni-kiel.de<mailto:juan at tf.uni-kiel.de>>, "trilinos-users at trilinos.org<mailto:trilinos-users at trilinos.org>" <trilinos-users at trilinos.org<mailto:trilinos-users at trilinos.org>>
Subject: [EXTERNAL] Re: [Trilinos-Users] Mesh and DOF management with trilinos

Thanks for the example. Looks like what i need. Is there a  documentation for STK  and seacas ? The doxygen links on trilinos website do not work for stk.



Reddy

On Tue, Feb 16, 2016 at 1:40 PM, juan <juan at tf.uni-kiel.de<mailto:juan at tf.uni-kiel.de>> wrote:
You can use STK for reading the mesh (it is very convenient with the new STK Ioss interface from SEACAS) and then use Epetra/Tpetra maps. This is presented in the following example

https://github.com/trilinos/Trilinos/blob/master/packages/trilinoscouplings/examples/scaling/example_Poisson_stk.cpp

There is also a FE assembly with Intrepid (which is compatible to Intrepid2) in the example if you plan to use that.


On 2016-02-16 19:41, Dharmendar Reddy wrote:
Hello All,
               I am planing to switch my code from Fortran+petsc to
C++ and trilinos. I have an FEM code which uses petsc DMPlex
(http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DM/DMPLEX.html)


Is there anything similar to DMPlex object in any of the trilinos
packages which can help me manage the mesh, DOF, setup and assembly of
the operators.

I would like to readin a mesh in exodus format into the mesh handler
and then use to help setup the operators, DOF variables etc.

Reddy

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