Apparatus and method of controlling data sharing on a shared memory computer system
US7386680B2 · kind B2 · utility
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Key dates
| Filing date | Apr 28, 2006 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Dec 7, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0822
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method of controlling data sharing in a shared memory computer system transfers control of a cache coherency directory (entry) to a node having control of the data. Specifically, the plurality of nodes includes a home node and a second node. The home node has given data in a cache line in its memory, and also has a directory identifying the state of the cache line. The method and apparatus thus detect a request for ownership of the cache line from the second node, and enable the second node to control the directory after receipt of the request.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.