Patent · US Active

Performing a least recently used (LRU) algorithm for a co-processor

US8166249B2 · kind B2 · utility

2Cited by

1References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Thomas Koehler · Holzgerlingen, DE
Siegmund Schlechter · Lorch, DE

Key dates

Filing date	Mar 6, 2009
Grant date	Apr 24, 2012
Priority date	—
Expiry date	Nov 27, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG06F12/1027
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method to perform a least recently used (LRU) algorithm for a co-processor is described, which co-processor in order to directly use instructions of a core processor and to directly access a main storage by virtual addresses of said core processor comprises a TLB for virtual to absolute address translations plus a dedicated memory storage also including said TLB, wherein said TLB consists of at least two zones which can be assigned in a flexible manner more than one at a time. Said method to perform a LRU algorithm is characterized in that one or more zones are replaced dependent on an actual compression service call (CMPSC) instruction.

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