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.
Patent No.:
Date of Patent:
May. 30, 2017
Filed:
Aug. 28, 2013
International Business Machines Corporation, Armonk, NY (US);
Nikolaos Chrysos, Thalwil, SZ;
Girish G. Kurup, Bangalore, IN;
Cyriel J. Minkenberg, Gutenswil, SZ;
Anil Pothireddy, Bangalore, IN;
Mark L. Rudquist, Rochester, MN (US);
Vibhor K. Srivastava, Sitapur Uttar Pradesh, IN;
Brian T. Vanderpool, Byron, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system are provided for implementing a hierarchical high radix switch with a time-sliced crossbar. The hierarchical high radix switch includes a plurality of inputs and a plurality of outputs. Each input belongs to one input group; each input group sends consolidated requests to each output, by ORing the requests from the local input ports in that input group. Each output port belongs to one output group; each output port grants one of the requesting input groups using a rotating priority defined by a next-to-serve pointer. Each output group consolidates the output port grants and allows one grant to pass back to an input group. Each input port in an input group evaluates all incoming grants in an oldest packet first manner to form an accept. Each input group consolidates the input port accepts and selects one accept to send to the output port.