Look-up filter structures, systems and methods for filtering accesses to a pool of tags for cache memories
US7571281B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2006 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | May 11, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0895
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, an apparatus includes an input port to receive a request to determine whether data units are stored in the cache, as well as an output port to generate look-ups for the pool of tags. The apparatus also includes a look-up filter coupled to the input and output ports, and operates to filter out superfluous look-ups for the data units, thereby forming filtered look-ups. Advantageously, the look-up filter can filter out superfluous look-ups to at least reduce the quantity of look-up operations associated with the request, thereby reducing stalling associated with multiple look-up operations. In a specific embodiment, the look-up filter can include a data unit grouping detector and a look-up suppressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.