Optical-based barrier synchronization methods and systems...

Details Optical-based barrier synchronization methods and systems... Optical-based barrier synchronization methods and systems...

2011-05-17

2011-05-17

Hahm, Sarah (Department: 2874)

Optical waveguides

Integrated optical circuit

C385S024000, C385S129000, C385S016000

Reexamination Certificate

active

07945128

ABSTRACT:
Various embodiments of the present invention are directed to optical-based barrier methods and systems for synchronizing processing of two or more threads. In one method embodiment of a barrier method, each thread can be processed by a different processing element. The method comprises transmitting a lightwave along a waveguide that is optically coupled to each of the processing elements. Each processing element that processes a thread turns on diverter capable of diverting substantially all of the lightwave from the waveguide. Each processing element that completes processing of a thread turns off a corresponding diverter. A barrier is reached when all of the processing elements have turned off the corresponding diverters and discontinued diverting a portion of the lightwave from the waveguide.

REFERENCES:
patent: 7359587 (2008-04-01), Beausoleil et al.
patent: 7529437 (2009-05-01), Spillane et al.
patent: 2006/0056758 (2006-03-01), Beausoleil et al.
patent: 2008/0031296 (2008-02-01), Spillane et al.

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