Method and apparatus for filtering memory write snoop activity in a distributed shared memory computer
US7373466B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2004 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Aug 4, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for filtering memory probe activity for writes in a distributed shared memory computer. In one embodiment, the method may include assigning an uncached directory state to a cache data block in response to evicting the cache data block. In another embodiment, the method may include assigning a remote directory state to a cache data block in response to evicting the cache data block and storing it in a remote cache. In a third embodiment, the method may include assigning a pairwise-shared directory state in response to a second processor node initiating a load operation to a cache data block in a modified cache state in a first processor node. In a fourth embodiment, the method may include assigning a migratory directory state in response to a processor node initiating a store operation to a cache data block in a pairwise-shared cache state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.