Shared memory multiprocessor system and method of operation thereof
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United States of America Patent
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Mar 22, 1994
Issued Date -
N/A
app pub date -
Jun 22, 1989
filing date -
Dec 22, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital data processing apparatus has plural processing cells, each with a memory element that stores data page made up of plural subpages. At least one of the cells includes a CPU that can request access to a data subpage. A memory manager responds to selected data access requests by (i) allocating, within the memory local to the requesting CPU, exclusive physical storage space for a data page associated with the requested subpage, and (ii) storing the requested subpage in that allocated space. The apparatus recombines data pages and deallocates them on the basis of usage and access state. The apparatus also accesses data asynchronously with respect to execution of instructions by the CPU.
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