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:
Feb. 24, 2026
Filed:
Nov. 13, 2023
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Vydhyanathan Kalyanasundharam, Santa Clara, CA (US);
Christopher J. Brennan, Boxborough, MA (US);
Joseph L Greathouse, Austin, TX (US);
Mark Fowler, Boxborough, MA (US);
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Abstract
A processing system includes one or more DMA engines that load data from memory or another cache location without storing the data after loading it. As the data propagates past caches located between the memory or other cache location that stores the requested data ('intermediate caches'), the data is selectively copied to the intermediate caches based on a cache replacement policy. Rather than the DMA engine manually storing the data into the intermediate caches, the cache replacement policies of the intermediate caches determine whether the data is copied into each respective cache and a replacement priority of the data. By bypassing storing the data, the DMA engine effectuates prefetching to the intermediate caches without expending unnecessary bandwidth or searching for a memory location to store the data, thus reducing latency and saving energy.