Patent · US Active

Processor instruction based data prefetching

US9201798B2 · kind B2 · utility

0Cited by

2References

17Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Hans Boettiger · Lörrach, DE
Thilo Maurer · Stuttgart, DE

Key dates

Filing date	Oct 9, 2013
Grant date	Dec 1, 2015
Priority date	—
Expiry date	Jan 14, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG06F2212/6024
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A computer implemented method for prefetching data. The method includes: receiving one or more addresses by a prefetching unit upon execution of an enqueuing command in a first piece of program logic; enqueuing each of the received addresses to a recording-list; identifying one of the positions in the recording-list as jump position; providing the identified jump position to a frame-shifter; using a sub-list of the recording-list defined by a shiftable frame as a playback-list; executing a frame-shift command which triggers the frame-shifter to shift the frame in dependence on the jump position to provide an updated playback-list; fetching data identified by the updated playback-list from a second memory; and transferring the fetched data to a first memory.

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