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Achievement of 10 GigaFLOPS Sustained Performance on ESS Grand Challenge Applications

Objective

To enable development and optimization of CAN Investigator Grand Challenge applications to achieve 10 gigaFLOPS sustained performance.

Approach

Cray Research is placing a 512 PE CRAY T3D at GSFC in FY96 to serve as the platform on which to attain the 10 gigaFLOPS performance milestone for each Grand Challenge Investigator Team. Cray also is consulting with the Teams to improve single PE performance on the application codes in a joint effort to optimize performance. Cray has provided training on the T3D to representatives of the Teams and will continue to provide training for the follow-on system, a 384 PE Cray T3E to be placed at GSFC in FY97.

Accomplishments

The CRAY T3D is being installed at GSFC. A combination of two CAN benchmark codes and two Grand Challenge Investigator Team codes will be run to demonstrate performance levels of greater than 10 gigaFLOPS. Training sessions on optimization for T3D single node performance and scalability have been conducted for 23 members of the Investigator Teams and ESS Inhouse Team members.

Significance

The establishment of the T3D testbed with its large number of processors presents the Investigator Teams and NASA with a progressive step in mastering the complexity of developing operational models that scale to achieve levels of performance not available on NASA's current vector supercomputers.

Status/Plans

Cray will continue to enable all Investigator Teams to accomplish the 10 gigaFLOPS milestone. In order to achieve the June 1997 ESS Project Milestone of 50 gigaFLOPS sustained performance on Investigator codes, Cray will place a 384 PE CRAY T3E at GSFC and provide access to machines as large as 768 PE's. Preparation for transition to the new Cray T3E system will commence early in 1997. Cray will provide two applications engineers to reside at GSFC and work full-time with the Investigator Teams. Cray also will provide user training for the T3E.

Points of Contact

David Caliga
Cray Research
Silicon Graphics, Inc.
caliga@cray.com
612-683-3682

Tom Formhals
Cray Research
Silicon Graphics, Inc.
tom.formhals@cray.com
703-227-8519


Table of Contents | Section Contents -- Applications | Subsection Contents -- Science Team II