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Canadian application, no grantCanada

Improved scheduling technique for software pipelining

CA 2439137 A1 · Owner: Ibm Canada Limited - Ibm Canada Limitee · Inventors: Martin, Allan R.; Mcinnes, James Lawrence

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An improved scheduling technique for software pipelining is disclosed which is designed, to find schedules requiring fewer processor clock cycles and reduce register pressure hot spots, when scheduling multiple groups of instructions (e.g. as represented by multiple sub-graphs of a, DDG) which are independent and substantially identical. The improvement in instruction, scheduling and reduction of hot spots is achieved by evenly distributing such groups of, instructions around the schedule for a given loop.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed August 8, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 8, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 8, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 8, 2003
GrantedNo grant recorded
Term endedAugust 8, 2023
Patent numberCA 2439137 A1
Classification (IPC)G06F9/45 +1 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedAug 8, 2003Term endedAug 8, 2023

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.