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As part of a research project studying multiphysics preconditioners I developed a small software package for manipulation and (approximate) inversion of block linear systems. The motivation and requirements were for Teko to be a library suitable for rapid prototyping of new block preconditioner, but also capable of an efficient implementation. The rapid prototyping requirement suggestested a natural MATLAB like interface. This motivated the choice of Thyra as an abstraction layer for block manipulation and the implicit construction of linear operators. Another layer of abstraction is provided through the Stratimikos library. This permits access to the full range of solvers and preconditioners in Trilinos for (approximate) inversion of sub block matrices.

Teko blocks

Several block preconditioners are included in the Teko package. These include general block Gauss-Seidel, block Jacobi and block LU factorization. Additionally preconditioners for Navier-Stokes, such as SIMPLE(C), LSC and PCD, are included in Teko. Also provided in Teko is an interface for fully specifying these preconditioners at runtime through the use of XML file. This allows the user to specify complex composite preconditioners using a human readable interface.


In the summer of 2002 while an intern under the guidance of A. Giunta at Sandia National Laboratories, I participated in the initial development of this software used for surface fitting methods. Since then a number of other developers have improved upon the initial design and added more functionality. In 2006 the software was presented at a conference along with a paper. Currently it is utilized within Sandia's DAKOTA software package.

CAEFF FEM Software

Collaborated with E. Duffy and J.B. von Oehsen in the Spring and summer of 2003 on (very) early software design of the FEM portion of the code. This was my first introduction to both finite element software development and generic programming.

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Eric C. Cyr

E-mail: Eric C. Cyr
(505)844-0360 (Phone)

Mailing address
Sandia National Laboratories
P.O. Box 5800, MS 1320
Albuquerque, NM 87185-1320

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University of Illinois
Clemson University