Silicon Graphics, Incorporated

Supercomputer Systems Limited Partnership

Mark D Johnson

Richard E Hessel

George A Spix

Don A Van Dyke

Steve S Chen

Jon A Masamitsu

Gregory G Gaertner

Diane M Wengelski

Robert E Strout, Ii

David M Cox

Keith J Thompson

James C Rasbold

David A Seberger

Kelly T O'Hair

Timothy J Cramer

Ashok Chandramouli

Linda J O'Gara

Jeremiah D Burke

Stuart W Hawkinson

Giacomo G Brussino

Steven G Oslon

David M Barkai

An integrated software architecture for a highly parallel multiprocessor system having multiple tightly-coupled processors that share a common memory efficiently controls the interface with and execution of programs on such a multiprocessor system. The software architecture combines a symmetrically integrated multithreaded operating system and an integrated parallel user environment. The operating system distributively implements an anarchy-based scheduling model for the scheduling of processes and resources by allowing each processor to access a single image of the operating system stored in the common memory that operates on a common set of operating system shared resources. The user environment provides a common visual representation for a plurality of program development tools that provide compilation, execution and debugging capabilities for multithreaded user programs and assumes parallelism as the standard mode of operation.

Method and apparatus for user side scheduling in a multiprocessor operating system program that implements distributive scheduling of processes

System and method for controlling a highly parallel multiprocessor using

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Eau Claire, WI, United States of America

Mark D Johnson