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:
Jan. 18, 2022
Filed:
Jan. 29, 2020
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Weon Taek Na, Bellevue, WA (US);
Yasuko Eckert, Bellevue, WA (US);
Mark H. Oskin, Bellevue, WA (US);
Gabriel H. Loh, Bellevue, WA (US);
William Louie Walker, Bellevue, WA (US);
Michael Warren Boyer, Bellevue, WA (US);
ADVANCED MICRO DEVICES, INC., Santa Clara, CA (US);
Abstract
An approach for tracking data stored in caches uses a Bloom filter to reduce the number of addresses that need to be tracked by a coherence directory. When a requested address is determined to not be currently tracked by either the coherence directory or the Bloom filter, tracking of the address is initiated in the Bloom filter, but not in the coherence directory. Initiating tracking of the address in the Bloom filter includes setting hash bits in the Bloom filter so that subsequent requests for the address will 'hit' the Bloom filter. When a requested address is determined to be tracked by the coherence directory, the Bloom filter is not used to track the address.