Electrical computers and digital processing systems: memory – Storage accessing and control – Access timing
Patent
1998-04-10
2000-08-08
Yoo, Do Hyun
Electrical computers and digital processing systems: memory
Storage accessing and control
Access timing
711127, 711118, 711130, 714 5, G06F 1200
Patent
active
06101589&
ABSTRACT:
A high performance cache unit in a multiprocessing computer system comprises a shared level n cache 15 which is divided into a number of independently operated cache cores each of which containing a cache array for being used as buffer between plurality of processing units PU0-PU1 and a memory 18. Data requests and response requests issued by the processing units are separately executed in an interleaved mode to achieve a high degree of concurrency. For this purpose each cache core comprises arbitration circuits 101, 106 for an independent selection of pending data requests and response requests for execution. Selected data requests are identified by a cache directory lookup as linefetch-match or linefetch-miss operations and separately stored during their execution in operation registers 112, 114. Selected response requests are stored independently of the data requests in registers 105, 108, 109 and successively executed during free operation cycles which are not used by the execution of data requests. In this manner each of the cache cores can concurrently perform a linefetch-match operation, a linefetch-miss operation and a store operation for one processing unit or for a number of processing units.
REFERENCES:
patent: 4056845 (1977-11-01), Churchill, Jr.
patent: 4445174 (1984-04-01), Fletcher
patent: 4905141 (1990-02-01), Brenza
patent: 5347648 (1994-09-01), Stamm et al.
patent: 5581734 (1996-12-01), DiBrino et al.
patent: 5745913 (1998-04-01), Pattin et al.
Fuhrmann Horst
Wedeck Jorg
Wendel Dieter
Wille Udo
Augspurger Lynn L.
International Business Machines - Corporation
Moazzami Nasser
Yoo Do Hyun
LandOfFree
High performance shared 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 High performance shared cache, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High performance shared cache will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1160474