Patent · US Active

Adaptive data prefetching

US9280474B2 · kind B2 · utility

7Cited by

28References

21Claims

0Family size

Assignee

Intel Corporation · US

Inventors

Demos Pavlou · Barcelona, ES
Pedro Lopez · Molins de Rei, ES
Mirem Hyuseinova · Barcelona, ES
Fernando Latorre · Soria, ES
Steffen Kosinski · Braunschweig, DE
Ralf Goettsche · Braunschweig, DE
Varun K. Mohandru · Braunschweig, DE

Key dates

Filing date	Jan 3, 2013
Grant date	Mar 8, 2016
Priority date	—
Expiry date	Nov 14, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F2212/6026
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A system and method for adaptive data prefetching in a processor enables adaptive modification of parameters associated with a prefetch operation. A stride pattern in successive addresses of a memory operation may be detected, including determining a stride length (L). Prefetching of memory operations may be based on a prefetch address determined from a base memory address, the stride length L, and a prefetch distance (D). A number of prefetch misses may be counted at a miss prefetch count (C). Based on the value of the miss prefetch count C, the prefetch distance D may be modified. As a result of adaptive modification of the prefetch distance D, an improved rate of cache hits may be realized.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.