1. GridLab & Cactus Joni Kivi Maarit Lintunen

2. GridLab  A project funded by the European Commission  The project was started in January 2002  Software releases should ready in December 2004

3. The institutions and corporations participating in the project  12 universities, institutions and computing centres all around the world  2 corporations: Sun Microsystems Gridware GmbH and Compaq Computer EMEA

4. GAT- The Grid Application Toolkit  To goal of the project is to develop a Grid Application Toolkit (GAT)  GAT should be flexible, easy to use, generic and modular  GAT enables applications of today to use the global computing resources in an innovative way

5. Architecture

6. Work Packages  12 core packages  Also 3 additional packages which cover exploitation, dissemination and project management

7. Software  The project will provide the following software components: Grid Application Toolkit a set of Grid services Portal Development Framework GridSphere and a set of GridSphere Portlets  Most of GridLab software is being distributed with Open Source licences

8. User scenario  Gravitational wave detection analysis  With the help of GridLab, the researchers can choose suitable machines for computing  The portal notifies the researchers of machine overloads (for example as an SMS message)  The user can connect to the portal (for example by using a PDA) and change machines used for the computation

9. Collaborations  N*Grid A project to build a Grid infrastructure across South Korea  GriKSL A German project Uses the same TestBed than GridLab

10. Cactus  open source problem solving environment designed for scientists and engineers  designed by Paul Walker, Joan Masso, John Shalf and Ed Seidel as a code for numerical relativity  Since the cactuscode is free, it has been adapted to many platforms and systems.

11. Cactus  The project aims at providing an open source High Performance Computing framework that allows the scientific community to immediately benefit from the advances in IT technology.

12. Cactus Features  Highly Portable  Powerful Application Programming Interface  Advanced Computational Toolkit  Collaborative Development  Exhaustive Numerical Relativity and Astrophysical Applications

13. Cactus Architecture  Cactus comprises of the core code (“the Flesh”) and modules (“the Thorns”).  Only these modules are visible to the user, so the underlying technology can be replaced at any time.

14. Cactus Architecture Configure CST Flesh Computational Toolkit Operating Systems AIX NT Linux Unicos Solaris HP-UX Thorns Cactus SuperUX Irix OSF Make

15. Thorn Arcitecture Make Information Source Code Documentation! Configuration Files Parameter Files and Testsuites ???? Fortran Routines C++ Routines C Routines Thorn

16. Cactus Systems

17. Cactus Organization