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Dive into the research topics where Sheldon B. Levenstein is active.

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Featured researches published by Sheldon B. Levenstein.


international conference on computer design | 1994

AS/400 64-bit powerPC-compatible processor implementation

John Michael Borkenhagen; Glen Howard Handlogten; John D. Irish; Sheldon B. Levenstein

An implementation of the 64-bit PowerPC Architecture optimized for the IBM AS/400 commercial environment is described. This 64-bit BiCMOS semicustom implementation runs at a clock rate of 170 MHz. The processor features a 4-way superscalar pipelined fixed point unit which can dispatch and execute up to 4 instructions each cycle, a floating point unit with a peak rate of 500 MFLOPs, 8-Kbyte L0 instruction cache, 256-Kbyte L1 cache, and support for 64-Gbyte of main storage. A 4-way rightly-coupled symmetric multi-processor system is one of several configurations supported by this implementation.<<ETX>>


Archive | 1997

Thread switch control in a multithreaded processor system

John Michael Borkenhagen; Richard James Eickemeyer; William Thomas Flynn; Sheldon B. Levenstein; Andrew Henry Wottreng


Archive | 1996

Background completion of instruction and associated fetch request in a multithread processor

John Michael Borkenhagen; Richard James Eickemeyer; Sheldon B. Levenstein; Andrew Henry Wottreng; Duane Arlyn Averill; James Ira Brookhouser


Archive | 1997

Apparatus and method to guarantee forward progress in execution of threads in a multithreaded processor

John Michael Borkenhagen; Richard James Eickemeyer; William Thomas Flynn; Steven R. Kunkel; Sheldon B. Levenstein; Andrew Henry Wottreng


Archive | 1997

Data processing system and multi-way set associative cache utilizing class predict data structure and method thereof

David John Krolak; Sheldon B. Levenstein


Archive | 2004

Processor, data processing system and method for synchronizing access to data in shared memory

Guy Lynn Guthrie; Sheldon B. Levenstein; William J. Starke; Derek Edward Williams


Archive | 2005

Mini-refresh processor recovery as bug workaround method using existing recovery hardware

Michael Stephen Floyd; Larry Scott Leitner; Sheldon B. Levenstein; Scott Barnett Swaney; Brian W. Thompto


Archive | 1992

Duplicated logic and interconnection system for arbitration among multiple information processors

Sheldon B. Levenstein


Archive | 1989

High performance shared main storage interface

Richard Glenn Eikill; Sheldon B. Levenstein


Archive | 1994

Abridged virtual address cache directory

David John Krolak; Lyle Edwin Grosbach; Sheldon B. Levenstein; John D. Irish

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