Multiprocessor system having distributed shared resources and dynamic global data replication
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United States of America Patent
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Sep 21, 1993
Grant Date -
N/A
app pub date -
Nov 16, 1990
filing date -
Dec 4, 1989
priority date (Note) -
Expired
status (Latency Note)
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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.
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