Patents by Inventor Prasanna Utchani Varadharajan

Prasanna Utchani Varadharajan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Poison mechanisms for deferred invalidates
    Patent number: 11630771
    Abstract: An apparatus includes multiple processors including respective cache memories, the cache memories configured to cache cache-entries for use by the processors. At least a processor among the processors includes cache management logic that is configured to (i) receive, from one or more of the other processors, cache-invalidation commands that request invalidation of specified cache-entries in the cache memory of the processor (ii) mark the specified cache-entries as intended for invalidation but defer actual invalidation of the specified cache-entries, and (iii) upon detecting a synchronization event associated with the cache-invalidation commands, invalidate the cache-entries that were marked as intended for invalidation.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: April 18, 2023
    Assignee: APPLE INC.
    Inventors: John D Pape, Mahesh K Reddy, Prasanna Utchani Varadharajan, Pruthivi Vuyyuru
  • Poison Mechanisms for Deferred Invalidates
    Publication number: 20230017473
    Abstract: An apparatus includes multiple processors including respective cache memories, the cache memories configured to cache cache-entries for use by the processors. At least a processor among the processors includes cache management logic that is configured to (i) receive, from one or more of the other processors, cache-invalidation commands that request invalidation of specified cache-entries in the cache memory of the processor (ii) mark the specified cache-entries as intended for invalidation but defer actual invalidation of the specified cache-entries, and (iii) upon detecting a synchronization event associated with the cache-invalidation commands, invalidate the cache-entries that were marked as intended for invalidation.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 19, 2023
    Inventors: John D. Pape, Mahesh K. Reddy, Prasanna Utchani Varadharajan, Pruthivi Vuyyuru