Optimistic distributed simulation based on transitive dependency tracking
CA 2235667 C · Owner: At&T Corp. · Inventors: Garg, Vijay K.; Wang, Yi-Min; Damani, Om P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optimistic distributed simulation method applicable to event-driven simulation that requires only a single rollback announcement per straggler message with no need for other simulation processes to announce their roll backs. The method is accomplished by maintaining transitive dependency information between the simulation processes in the form of a simulation vector. The present invention eliminates the need for output queues and also the possibility of multiple roll backs per simulation process and avalanche of anti-messages. Alternatives to reduce blocking and minimize the size of the simulation vectors are also disclosed thereby reducing the overhead requirements for systems with …
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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 April 23, 1998 and granted June 25, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2020.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.