Sun Microsystems, Inc.

Kendall Square Research Corporation

Nathan Goodman

Steven J Frank

Henry Burkhardt, Iii

Frederick D Weber

Benson I Margulies

Linda O Lee

Linda Q Lee

A multiprocessor digital data processing system comprises a plurality of processing cells arranged in a hierarchy of rings. The system selectively allocates storage and moves exclusive data copies from cell to cell in response to access requests generated by the cells. Routing elements are employed to selectively broadcast data access requests, updates and transfers on the rings.

Multiprocessor digital data processing system

Multiprocessor digital data processing system/shared memory

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.

Shared memory multiprocessor system and method of operation thereof

Growing community of inventors

Brookline, MA, United States of America

Nathan Goodman