The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 17, 2015

Filed:

Oct. 31, 2012
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Nikolaos Chrysos, Thalwil, CH;

Girish Gopala Kurup, Bangalore, IN;

Cyriel J. Minkenberg, Gutenswil, CH;

Anil Pothireddy, Bangalore, IN;

Vibhor K. Srivastava, Sitapur Uttar Pradesh, IN;

Brian T. Vanderpool, Byron, MN (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/00 (2006.01); G06F 13/40 (2006.01); G06F 13/36 (2006.01);
U.S. Cl.
CPC ...
G06F 13/4022 (2013.01); G06F 13/36 (2013.01);
Abstract

Techniques are disclosed to implement a scheduling scheme for a crossbar scheduler that provides distributed request-grant-accept arbitration between input group arbiters and output group arbiters in a distributed switch. Input and output ports are grouped and assigned a respective arbiter. The input group arbiters communicate requests indicating a count of respective ports having data packets to be transmitted via one of the output ports. The output group arbiter attempts to accommodate the requests for each member of an input group before proceeding to a next input group.


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