Multiprocessor system having distributed shared resources and dy

Details Multiprocessor system having distributed shared resources and dy Multiprocessor system having distributed shared resources and dy

1990-11-16

1993-09-21

Shaw, Gareth D.

Boots, shoes, and leggings

364DIG2, 3649747, 36496427, 3649466, 3649710, 364DIG1, 3642281, 3642824, 3642543, G06F 1516

Patent

active

052476731

ABSTRACT:
A multiprocessor system has distributed shared resources and dynamic global data replication in which a plurality of processors communicate each with the other through a system bus. Each CPU is provided with a local memory for storing data used locally and global data shareable by a plurality of processes operative in different CPUs and therefore replicated in the local memory of each CPU. Global data replication is performed at page level only when a global data page is effectively needed by a plurality of processes operative in different CPUs so that memory space required for replication is minimized as well as traffic on the system bus for global data replication and global data writes required for ensuring global data consistency.

REFERENCES:
patent: 4620276 (1986-10-01), Daniell et al.
patent: 4928224 (1990-05-01), Zulian
EP-A-081 056 (IBM) Abstract; p. 4, paragraph 2; claims 1-2.
Cern Conference Proceedings, Geneva, Oct. 7-8, 1985, pp. 283-290; J. Zalewsk, "An approach to programming multimicroprocessor bus systems", p. 285, Section 3, p. 286, Section 4.
GB-A-2 206 714 (Singer) Abstract; FIG. 1, Claims 1-4; p. 5, paragraph 1-p. 6, paragraph 2.
AFIPS Conference Proceedings, Anaheim, Calif. May 16-19, 1983, pp. 557-564; S. L. Lillevik, et al., "A multiprocessor with replicated shared memory", FIG. 15, p. 560, paragraph 2, line 20.

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