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Method and apparatus for dynamically sharing memory in a multiprocessor system

  • US 6,381,682 B2
  • Filed: 06/10/1998
  • Issued: 04/30/2002
  • Est. Priority Date: 06/10/1998
  • Status: Expired due to Fees
First Claim
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1. A computer system having a plurality of system resources including processors, main memory, and I/O circuitry and a plurality of operating system instances, the computer system comprising:

  • an interconnection mechanism for electrically interconnecting the processors, the main memory, and the I/O circuitry so that each processor has electrical access to all of the main memory and at least some of the I/O circuitry;

    a software mechanism for dividing the system resources into a plurality of partitions executing the plurality of operating system instances;

    at least two of the plurality of partitions forming a community sharing a region of the main memory as shared memory, wherein a segment of the shared memory forms a shared memory database shared by the community; and

    wherein the shared memory database indicates whether an operating system instance associated with a partition within the community is active.

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