Advanced Micro Devices Corporation

Sharad Dilip Bade

John Kalamatianos

Alok Garg

Marius Evers

Paul S Keltcher

Chitresh Chandra Narasimhaiah

Methods and systems for prefetching data for a processor are provided. A system is configured for and a method includes selecting one of a first prefetching control logic and a second prefetching control logic of the processor as a candidate feature, capturing the performance metric of the processor over an inactive sample period when the candidate feature is inactive, capturing a performance metric of the processor over an active sample period when the candidate feature is active, comparing the performance metric of the processor for the active and inactive sample periods, and setting a status of the candidate feature as enabled when the performance metric in the active period indicates improvement over the performance metric in the inactive period, and as disabled when the performance metric in the inactive period indicates improvement over the performance metric in the active period.

Dynamic evaluation and reconfiguration of a data prefetcher

A method, an apparatus, and a non-transitory computer readable medium for tracking prefetches generated by a stride prefetcher are presented. Responsive to a prefetcher table entry for an address stream locking on a stride, prefetch suppression logic is updated and prefetches from the prefetcher table entry are suppressed when suppression is enabled for that prefetcher table entry. A stride is a difference between consecutive addresses in the address stream. A prefetch request is issued from the prefetcher table entry when suppression is not enabled for that prefetcher table entry.

Growing community of inventors

Acton, MA, United States of America

Sharad Dilip Bade