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Shared memory multiprocessor system and method with address translation between partitions and resetting of nodes included in other partitions

  • US 6,510,496 B1
  • Filed: 02/11/2000
  • Issued: 01/21/2003
  • Est. Priority Date: 02/16/1999
  • Status: Expired due to Fees
First Claim
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1. A shared memory multiprocessor system having a plurality of nodes and a network for interconnecting nodes, each of the plurality of nodes including at least one CPU, at least one cache, and at least one main memory, cache coherent control being conducted between nodes sharing a main memory via said network, said plurality of nodes being divided into a plurality of partitions, each of said partitions including at least one node, the partitions respectively locally sharing a main memory,wherein a memory address of said system comprises a local real address and an address of common memory space, said local real address being local to each of said plurality of partitions, said address of common memory space being used in common in a memory space used in common between said plurality of partitions, wherein a main memory of each node is accessed by using a local real address of a partition the node belongs to, and wherein as for access from each CPU to a main memory of another node, data of a main memory of a node in its partition is accessed via said network by coherently using a local real address of the partition, and access to data of a main memory of a node included in another partition is conducted by translating an access address to an address of said shared memory space when an access command is issued to said network and translating an address of said shared memory space to a local real address of said another partition when said access command enters said node included in said another partition.

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