Patents by Inventor Randall HAMMON

Randall HAMMON 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).

  • Fair prefetching in hybrid column stores
    Patent number: 11442862
    Abstract: Disclosed herein are system, method, and computer program product embodiments for performing fair prefetching. An embodiment operates by splitting a data vector into a first subrange and a second subrange. The embodiment performs a first chance prefetch operation on the first subrange based on a fixed number of pages, thereby loading a set of pages of the first subrange into a main memory. The embodiment performs the first chance prefetch operation on the second subrange based on the fixed number of pages, thereby loading a first set of pages of the second subrange into the main memory. The embodiment performs a second chance prefetch operation on the second subrange based on the performing the first chance prefetch operation on the second subrange, thereby loading a second set of pages of the second subrange into the main memory. The embodiment then executes the query.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: September 13, 2022
    Assignee: SAP SE
    Inventors: Robert Schulze, Adrian Dragusanu, Anup Ghatage, Colin Florendo, Mihnea Andrei, Randall Hammon, Sarika Iyer, Simhachala Sasikanth Gottapu, Yanhong Wang
  • Fair Prefetching in Hybrid Column Stores
    Publication number: 20210326263
    Abstract: Disclosed herein are system, method, and computer program product embodiments for performing fair prefetching. An embodiment operates by splitting a data vector into a first subrange and a second subrange. The embodiment performs a first chance prefetch operation on the first subrange based on a fixed number of pages, thereby loading a set of pages of the first subrange into a main memory. The embodiment performs the first chance prefetch operation on the second subrange based on the fixed number of pages, thereby loading a first set of pages of the second subrange into the main memory. The embodiment performs a second chance prefetch operation on the second subrange based on the performing the first chance prefetch operation on the second subrange, thereby loading a second set of pages of the second subrange into the main memory. The embodiment then executes the query.
    Type: Application
    Filed: April 16, 2020
    Publication date: October 21, 2021
    Inventors: Robert SCHULZE, Adrian DRAGUSANU, Anup GHATAGE, Colin FLORENDO, Mihnea ANDREI, Randall HAMMON, Sarika IYER, Simhachala Sasikanth GOTTAPU, Yanhong WANG