Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Reexamination Certificate
2008-06-02
2010-11-09
Kim, Matt (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
C711SE12027
Reexamination Certificate
active
07831775
ABSTRACT:
Method, system and computer program product for tracking changes in an L1 data cache directory. A method for tracking changes in an L1 data cache directory determines if data to be written to the L1 data cache is to be written to an address to be changed from an old address to a new address. If it is determined that the data to be written is to be written to an address to be changed, a determination is made if the data to be written is associated with the old address or the new address. If it is determined that the data is to be written to the new address, the data is allowed to be written to the new address following a prescribed delay after the address to be changed is changed. The method is preferably implemented in a system that provides a Store Queue (STQU) design that includes a Content Addressable Memory (CAM)-based store address tracking mechanism that includes early and late write CAM ports. The method eliminates time windows and the need for an extra copy of the L1 data cache directory.
REFERENCES:
patent: 6081872 (2000-06-01), Matick et al.
patent: 6339813 (2002-01-01), Smith, III et al.
patent: 6519682 (2003-02-01), Richardson et al.
patent: 6782452 (2004-08-01), Williams, III
patent: 2002/0103971 (2002-08-01), Saito et al.
Levenstein Sheldon B.
Saporito Anthony
Gerhardt Diana R.
International Business Machines - Corporation
Kim Matt
Patel Kaushikkumar
Yee & Associates P.C.
LandOfFree
System and method for tracking changes in L1 data cache... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for tracking changes in L1 data cache..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for tracking changes in L1 data cache... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4150953