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Title: Global synchronization of parallel processors using clock pulse width modulation

Abstract

A circuit generates a global clock signal with a pulse width modification to synchronize processors in a parallel computing system. The circuit may include a hardware module and a clock splitter. The hardware module may generate a clock signal and performs a pulse width modification on the clock signal. The pulse width modification changes a pulse width within a clock period in the clock signal. The clock splitter may distribute the pulse width modified clock signal to a plurality of processors in the parallel computing system.

Inventors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Issue Date:
Research Org.:
International Business Machines Corp., Armonk, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1083810
Patent Number(s):
8412974
Application Number:
12/696,764
Assignee:
International Business Machines Corporation (Armonk, NY)
Patent Classifications (CPCs):
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
DOE Contract Number:  
B554331
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Chen, Dong, Ellavsky, Matthew R., Franke, Ross L., Gara, Alan, Gooding, Thomas M., Haring, Rudolf A., Jeanson, Mark J., Kopcsay, Gerard V., Liebsch, Thomas A., Littrell, Daniel, Ohmacht, Martin, Reed, Don D., Schenck, Brandon E., and Swetz, Richard A. Global synchronization of parallel processors using clock pulse width modulation. United States: N. p., 2013. Web.
Chen, Dong, Ellavsky, Matthew R., Franke, Ross L., Gara, Alan, Gooding, Thomas M., Haring, Rudolf A., Jeanson, Mark J., Kopcsay, Gerard V., Liebsch, Thomas A., Littrell, Daniel, Ohmacht, Martin, Reed, Don D., Schenck, Brandon E., & Swetz, Richard A. Global synchronization of parallel processors using clock pulse width modulation. United States.
Chen, Dong, Ellavsky, Matthew R., Franke, Ross L., Gara, Alan, Gooding, Thomas M., Haring, Rudolf A., Jeanson, Mark J., Kopcsay, Gerard V., Liebsch, Thomas A., Littrell, Daniel, Ohmacht, Martin, Reed, Don D., Schenck, Brandon E., and Swetz, Richard A. Tue . "Global synchronization of parallel processors using clock pulse width modulation". United States. https://www.osti.gov/servlets/purl/1083810.
@article{osti_1083810,
title = {Global synchronization of parallel processors using clock pulse width modulation},
author = {Chen, Dong and Ellavsky, Matthew R. and Franke, Ross L. and Gara, Alan and Gooding, Thomas M. and Haring, Rudolf A. and Jeanson, Mark J. and Kopcsay, Gerard V. and Liebsch, Thomas A. and Littrell, Daniel and Ohmacht, Martin and Reed, Don D. and Schenck, Brandon E. and Swetz, Richard A.},
abstractNote = {A circuit generates a global clock signal with a pulse width modification to synchronize processors in a parallel computing system. The circuit may include a hardware module and a clock splitter. The hardware module may generate a clock signal and performs a pulse width modification on the clock signal. The pulse width modification changes a pulse width within a clock period in the clock signal. The clock splitter may distribute the pulse width modified clock signal to a plurality of processors in the parallel computing system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 02 00:00:00 EDT 2013},
month = {Tue Apr 02 00:00:00 EDT 2013}
}

Works referenced in this record:

Microprocessor clocking control system
patent, May 1999


Multiple channel synchronized clock generation scheme
patent, August 2011


Method and apparatus for determining jitter and pulse width from clock signal comparisons
patent, October 2007


On-die automatic selection of manipulated clock pulse
patent, May 2005


Multi-Petascale Highly Efficient Parallel Supercomputer
patent-application, September 2011


Synchronizing processors when entering system management mode
patent, August 2011


Method and apparatus for varying a clock frequency on a phase by phase basis
patent, October 2000


Low skew minimized clock splitter
patent, October 2002