Executive Summary: Remove all but first paragraph. Continue CSIT was formally set up in November 1999 and has made the first six of of the initial authorization of 30 faculty positions. Several existing faculty are working closely with CSIT. Further a major state grant has seen the installation of Teragold -- an IBM SP parallel systems which will be enhanced to reach 680 processors with 2.5 teraflops performance over the next year. This is one of the largest computer resources devoted to research and education in a single university. This infrastructure proposal seeks federal funds to build on the State investment by supporting the Garnet project which uses innovative computer science research to further the schools mission in revolutionizing applications with large scale simulations. Although basic support for Teragold is provided by the universities computer services (ACNS) group, CSIT is responsible for "high-level" user support. Garnet uses new access and software approaches to provide an application computing environment that enhances user productivity and so furthers the goals of the School. Garnet includes "best of practice" hardware, software and networking to build client side environments to support computational science. Prototype Garnet systems are developed and tested in CSIT and then deployed throughout the campus departments working with CSIT. Garnet builds on the visualization, portal (grid) and algorithmic research of CSIT faculty. Garnet provides ability to submit and monitor jobs from both conventional and hand held wireless clients. Garnet will be compliant with the ongoing work of the Grid Forum and especially the new GCE (Grid Computing Environment) working group led by Fox, Gannon and Thomas. It will make use of standards, protocols and lessons from related projects provided by the Forum activities. Garnet will be "Grid-enabled" and of course allow access to distributed computing resources for CSIT application scientists. Garnet will be important in the educational goals of CSIT as it will provide a friendly environment for students to learn about the technology and applications of CSIT. Further Garnet builds on collaborative portal technology built to support new learning environments and distance education. The collaborative capabilities of Garnet will allow consultants and computational scientists to interact with shared programs and displays to enhance the interaction between the inter disciplinary participants in CSIT programs. This proposal provides infrastructure to support the prototyping of Garnet and its testing in two key application areas. This will be an iterative process throughout the period of the grant. Widespread deployment of the needed client hardware and software will not be covered by this grant but rather will be the responsibility of the University and grants of the application scientists