Patent · US Active

Bounding box prefetcher

US8880807B2 · kind B2 · utility

6Cited by

2References

23Claims

0Family size

Assignee

VIA Technologies, Inc. · TW

Inventors

Rodney E. Hooker · Austin, US
John Michael Greer · Navan, IE

Key dates

Filing date	May 20, 2014
Grant date	Nov 4, 2014
Priority date	—
Expiry date	May 20, 2034

Classification

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

Abstract

A data prefetcher in a microprocessor. The data prefetcher includes a plurality of period match counters associated with a corresponding plurality of different pattern periods. The data prefetcher also includes control logic that updates the plurality of period match counters in response to accesses to a memory block by the microprocessor, determines a clear pattern period based on the plurality of period match counters and prefetches into the microprocessor non-fetched cache lines within the memory block based on a pattern having the clear pattern period determined based on the plurality of period match counters.

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