This tutorial gives a practical introduction to Cactus, describing its design requirements and their realisation, its architecture and the tools and capabilities it provides. We illustrate how Cactus provides easy access to cutting edge software technologies, such as the GridLab Grid Application Toolkit, HDF5 parallel I/O, adaptive mesh refinement, remote steering and visualisation and interaction with Grid portals.

Carpet is a mesh refinement driver for cactus. This tutorial will introduce Berger-Oliger mesh refinement and then proceed to show how to use Carpet

After a brief introduction of the Cactus I/O architecture some general requirements of I/O in high-performance applications will be derived and their implementation within Cactus discussed.

In the second part of the tutorial, a set of standard tools for the visualization of cactus output data is presented. The practical use of two advanced visualization programs, DV and OpenDX will be covered in a hands-on session.

Kranc is a suite of Mathematica-based computer-algebra packages, which comprise a toolbox to convert (tensorial) systems of partial di erential evolution equations to parallelized C or Fortran code. Kranc can be used as a " a rapid prototyping system for scientists handling very complicated systems of partial differential equations, " but through integration into the Cactus computational toolkit we can also produce e cient parallelized production codes.

• Kranc Tutorial
• Kranc-1.0.0.tar.gz