Resolving ownership deadlock in a distributed shared memory

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United States of America Patent

PATENT NO 8775743
APP PUB NO 20120278392A1
SERIAL NO

13539563

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Abstract

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Systems and methods for implementing a distributed shared memory (DSM) in a computer cluster in which an unreliable underlying message passing technology is used, such that the DSM efficiently maintains coherency and reliability. DSM agents residing on different nodes of the cluster process access permission requests of local and remote users on specified data segments via handling procedures, which provide for recovering of lost ownership of a data segment while ensuring exclusive ownership of a data segment among the DSM agents detecting and resolving a no-owner messaging deadlock, pruning of obsolete messages, and recovery of the latest contents of a data segment whose ownership has been lost.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aronovich, Lior Ramat Gan, IL 182 1612
Asher, Ron Tel Aviv, IL 56 993

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