公开(公告)号：US20230205700A1

公开(公告)日：2023-06-29

申请号：US17564141

申请日：2021-12-28

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Tarun NAKRA ,  Akhil ARUNKUMAR ,  Paul MOYER ,  Jay FLEISCHMAN

IPC: G06F12/0862 ,  G06F12/0811 ,  G06F9/38 ,  G06F9/30

CPC classification number: G06F12/0862 ,  G06F12/0811 ,  G06F9/3842 ,  G06F9/30047 ,  G06F2212/1021

Abstract: In response to generating one or more speculative prefetch requests for a last-level cache, a processor determines prefetch analytics for the generated speculative prefetch requests and compares the determined prefetch analytics of the speculative prefetch requests to selection thresholds. In response to a speculative prefetch request meeting or exceeding a selection threshold, the processor selects the speculative prefetch request for issuance to a memory-side cache controller. When one or more system conditions meet one or more condition thresholds, the processor issues the selected speculative prefetch request to the memory-side cache controller. The memory-side cache controller then retrieves the data indicated in the selected speculative prefetch request from a memory and stores it in a memory-side cache in the data fabric coupled to the last-level cache.