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We describe Cactus, a framework for building a variety of computing applications in science and engineering, including astrophysics, relativity and chemical engineering. We first motivate by example the need for such frameworks to support multi-platform, high performance applications across diverse communities. We then describe the design of the latest(More)
Grid technology has matured considerably over the past few years. Progress in both implementation and standardization is reaching a level of robustness that enables production quality deployments of grid services in the academic research community with heightened interest and early adoption in the industrial community. Despite this progress, grid(More)
Grid technology is widely emerging. Still, there is an eminent shortage of real Grid users, mostly due to the lack of a “critical mass” of widely deployed and reliable higher-level Grid services, tailored to application needs. The GridLab project aims to provide fundamentally new capabilities for applications to exploit the power of Grid computing, thus(More)
Miguel Alcubierre, Gabrielle Allen, Carles Bona, David Fiske, Tom Goodale, F. Siddhartha Guzmán, Ian Hawke, Scott H. Hawley, Sascha Husa, Michael Koppitz, Christiane Lechner, Denis Pollney, David Rideout, Marcelo Salgado, Erik Schnetter, Edward Seidel, Hisa-aki Shinkai, Deirdre Shoemaker, Béla Szilágyi, Ryoji Takahashi, and Jeff Winicour 2 (Mexico Numerical(More)
Core grid technologies are rapidly maturing, but there remains a shortage of real grid applications. One important reason is the lack of a simple and high-level application programming toolkit, bridging the gap between existing grid middleware and application-level needs. The Grid Application Toolkit (GAT), as currently developed by the EC-funded project(More)
ions like file movement that are independent of the underlying middleware infrastructure. The Grid Application Framework for Java (GAF4J) [33] is an application framework for multithreaded Java applications. GAF4J replaces thread objects by so-called task objects that can be executed on remote machines in a Grid. The GAT, however, has a broader(More)
52 Computer I n 1916, Albert Einstein published his famous general theory of relativity, which contains the rules of gravity and provides the basis for modern theories of astrophysics and cosmology. It describes phenomena on all scales in the universe, from compact objects such as black holes, neutron stars, and supernovae to large-scale structure formation(More)
We are developing a system for collaborative research and development for a distributed group of researchers at different institutions around the world. In a new paradigm for collaborative computational science, the computer code and supporting infrastructure itself becomes the collaborating instrument, just as an accelerator becomes the collaborating tool(More)