Implementing hierarchical high radix switch with timesliced crossbar

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United States of America Patent

PATENT NO 9667564
SERIAL NO

14012055

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Abstract

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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.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chrysos, Nikolaos Thalwil, SZ 21 119
Kurup, Girish G Bangalore, IN 16 45
Minkenberg, Cyriel J Gutenswil, SZ 54 710
Pothireddy, Anil Bangalore, IN 19 166
Rudquist, Mark L Rochester, US 10 62
Srivastava, Vibhor K Sitapur Uttar Pradesh, IN 8 55
Vanderpool, Brian T Byron, US 51 608

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