GetDP: a General Environment for the Treatment of Discrete Problems

Patrick Dular and Christophe Geuzaine

Version 2.1.0, Oct 24 2010

Description

GetDP is a general finite element solver using mixed elements to discretize de Rham-type complexes in one, two and three dimensions. The main feature of GetDP is the closeness between the input data defining discrete problems (written by the user in ASCII data files) and the symbolic mathematical expressions of these problems.

For example, to solve the Poisson equation div(a grad(v)) = f on a domain D, an input file (".pro" file) would contain something like this:

  FunctionSpace {
    { Name H1; Type Form0; 
      BasisFunction {
        { Name sn; NameOfCoef vn; Function BF_Node; Support D; Entity NodesOf[All]; }
      }
    }
  }
  Formulation{
    { Name Poisson; Type FemEquation;
      Quantity { 
        { Name v; Type Local; NameOfSpace H1; }
      }
      Equation {
        Galerkin { [ a[] * Dof{Grad v}, {Grad v} ] ; In D; Jacobian V; Integration I; }
        Galerkin { [ f[], {v} ] ; In D; Jacobian V; Integration I; }
      }
    }
  }

i.e., a direct transcription of the discrete function space and weak form of the problem.

See GetDP's reference manual for a more thorough overview of GetDP's capabilities.

Download

GetDP is distributed under the terms of the GNU General Public License (GPL):

Current stable release: Windows (XP/Vista), Linux (Intel glibc 2.3), Mac OS X (Intel 10.5) and source code
The binary versions are compiled with PETSc in complex arithmetic, with support for direct sparse linear solvers using UMFPACK. This makes them suboptimal for certain kinds of problems. You should recompile GetDP from the source code to achieve the best performance, in particular for large 3D problems. Check the wiki (login: getdp, password: getdp) for sample build instructions.
Development version:
- automated nightly builds: Windows (build log), Linux (build log), Mac OS X (build log)
- nightly source snapshot
- read-only svn access: 'svn co https://geuz.org/svn/getdp/trunk getdp' (username: getdp, password: getdp)
Browse all versions: binaries and sources

If you use GetDP please cite one of the references in your work (books, articles, reports, etc.).

Authors and credits

GetDP is developed by Patrick Dular and Christophe Geuzaine (both with the University of Liège). The CREDITS file has more information.

Please use the public mailing list getdp@geuz.org to send questions or ask for help. If you think you have found a bug in the program, you can file a report directly here (username: getdp, password: getdp).

Documentation

Reference manual (also available in pdf or in plain text)
Short presentation (also available in pdf)
Wiki with examples, a time line of changes and the bug tracking database (username: getdp, password: getdp)
Version history
Mailing lists:
- getdp (archived here) is the public mailing list for GetDP discussions, and is the best place to ask questions (and get answers!)
- getdp-announce (archived here) is a moderated ("read-only") list for announcements about new releases and other GetDP news

Licensing

In short, this means that everyone is free to use GetDP and to redistribute it on a free basis. GetDP is not in the public domain; it is copyrighted and there are restrictions on its distribution (see the license and its associated FAQ). For example, you cannot integrate this version of GetDP (in full or in parts) in any closed-source software you plan to distribute (commercially or not). If you want to integrate parts of GetDP into a closed-source software, or want to sell a modified closed-source version of GetDP, you will need to obtain a different license. Please contact us directly for more information.