Method and apparatus for strong affinity multiprocessor scheduling
CA 2227434 C · Owner: Merkey, Jeffrey V. · Inventors: Merkey, Jeffrey V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for scheduling threads on a multiprocessor utilize an unlocked local queue for each processor in the multiprocessor and a lockable global dispatch queue accessible by all processors. Threads are selected for movement from the unlocked local queue to the global dispatch queue only when the unlocked local queue contains too many threads that are waiting for a processor. Threads are selected to run on an available processor only after repeated checks to make certain no threads in the processor's unlocked local queue should be run first. As a result threads assigned to a processor tend , to stay with that processor unless the system load is severely unbalanced …
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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 July 25, 1996 and granted March 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.