Ensuring forward progress of token-required cache operations in a shared cache
US8938588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2010 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Oct 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/084
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Ensuring forward progress of token-required cache operations in a shared cache, including: snooping an instruction to execute a token-required cache operation; determining if a snoop machine is available and if the snoop machine is set to a reservation state; if the snoop machine is available and the snoop machine is in the reservation state, determining whether the instruction to execute the token-required cache operation owns a token or is a joint instruction; if the instruction is a joint instruction, instructing the operation to retry; if the instruction to execute the token-required cache operation owns a token, dispatching a cache controller; determining whether all required cache controllers of relevant compute nodes are available to execute the instruction; executing the instruction if the required cache controllers are available otherwise not executing the instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.