The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2014
Filed:
Nov. 21, 2008
David B. Glasco, Austin, TX (US);
Peter B. Holmqvist, Cary, NC (US);
George R. Lynch, Raleigh, NC (US);
Patrick R. Marchand, Apex, NC (US);
James Roberts, Austin, TX (US);
David B. Glasco, Austin, TX (US);
Peter B. Holmqvist, Cary, NC (US);
George R. Lynch, Raleigh, NC (US);
Patrick R. Marchand, Apex, NC (US);
James Roberts, Austin, TX (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
One embodiment of the invention sets forth a mechanism for evicting data from a data cache based on the data class of that data. The data stored in the cache lines in the data cache is categorized based on data classes that reflect the reuse potential of that data. The data classes are stored in a tag store, where each tag within the tag store corresponds to a single cache line within the data cache. When reserving a cache line for the data associated with a command, a tag look-up unit examines the data classes in the tag store to determine which data to evict. Data that has a low reuse potential is evicted at a higher priority than data that has a high reuse potential. Advantageously, evicting data that belongs to a data class that has a lower reuse potential reduces the number of cache misses within the system.