Functionality List

Data Structures Linear and Non-Linear Algebra PDE Modeling Parallel Computing Utilities Documentation Preprocessing Postprocessing User Interfaces Quality Assurance Problem Exploration Extensibility and Communication

Data Structures

General multidimensional array templates List and set templates Optimized numerical vector and matrix formats Optimized spatial point representation Structured, unstructured and staggered grids Scalar and vector fields

Linear and Non-Linear Algebra

Direct and iterative linear solvers Multigrid solvers Preconditioners Convergence monitors Non-linear solvers

PDE Modeling

Stationary and time-dependent PDEs Linear and non-linear PDEs Systems of coupled PDEs (multi-physics problems) Finite element algorithms Mixed finite element algorithms Implicit finite difference algorithms Explicit finite difference algorithms Library of finite elements Library of finite difference stencils Run time selection of spatial dimension (1, 2 or 3 dimension. General dimension for some algorithms)

Parallel Computing

Parallelization of linear algebra operations in PDE applications (presentation)

Utilities

Extended I/O, CPU timing, smart pointers Result database handling (SimRes database) Scripts and makefiles for project management

Documentation

Textbook from Springer-Verlag (presentation) Complete header file documentation Reports and scientific papers (presentation) Automatic application manual generation

Preprocessing

Transfinite mapping, super-element and lattice grid preprocessors Tools for integration with GeomPack and Triangle Adaptive meshing (presentation) Interfaces to external preprocessor formats ( presentation)

Postprocessing

Interfaces to Matlab, Gnuplot, IRIS Explorer, AVS, Vtk and more Filters for mapping of SimRes database to visualization tools

User Interfaces

Menu system interfacing through input file, graphical or command line mode (graphical, an input file)

Quality Assurance

Tools for automatic regression testing of applications Automatic memory handling Debugging tools Code transformation programs between Diffpack versions

Problem Exploration

Run time selection of all application and library entities, from simple variables to abstract data-types (illustration) Batch experiments by sequences of runs configured by the Menu system (example) Automatic report generation in LaTeX, ASCII or HTML

Extensibility and Communication

Register user defined entities in Diffpack's entity tables for interoperability with Diffpack. Interfacing external modules for interoperation with Diffpack (e.g. elements, solvers, simulators, possibly in other languages) Compile time input control for running as slave under external processes

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