Multiprocessing computer system employing local and global address spaces and COMA and NUMA access modes
US5887138A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1996 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Jul 1, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/272
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multiprocessing computer system employs local and global address spaces and Non- Uniform Memory Architecture (NUMA) and Cache-Only Memory Architecture (COMA) access modes. The multiprocessing computer architecture employs a plurality of processing nodes. When a processing node initiates a memory transaction, the node determines whether the address of the memory transaction is a global address or a local physical address. If the address is a global address, a NUMA coherency request is initiated. Alternatively, if the address is a local physical address, a COMA coherency request is initiated. The nodes additionally include local physical address to global address translation units. The local physical address to global address translation units are configured to translate a local physical address to a corresponding global address prior to initiating a COMA coherency request.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.