Method for sharing variable-grained memory of workstations by sending particular block including line and size of the block to exchange shared data structures
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United States of America Patent
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Aug 3, 1999
Grant Date -
N/A
app pub date -
Jul 17, 1996
filing date -
Jul 17, 1996
priority date (Note) -
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Abstract
In a distributed shared memory system, workstations are connected to each other by a network. Each workstation includes a processor, a memory having addresses, and an input/output interface to interconnect the workstations. A software implemented method enables data sharing between the workstations using variable sized quantities of data. A set of the addresses of the memories are designated as virtual shared addresses to store shared data. A portion of the virtual shared addresses are allocated to store a shared data structure as one or more blocks. The shared data structure is accessible by programs executing in any of the processors. The size of a particular allocated block can vary for different shared data structures. Each block includes an integer number of lines, and each line includes a predetermined number of bytes of shared data. Access information of a particular block is stored in the memory of a home one of the workstations. The access information includes the size of the particular block and an identity of workstations having a copy of the block.
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