Multi-node computer system with proxy transaction to read data from a non-owning memory device
US8010749B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2004 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Mar 16, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0813
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A node includes several devices including a memory, an active device, and an interface configured to send and receive coherency messages on an inter-node network coupling the node to another node, as well as an address network and a data network. In response to receiving a coherency message requesting an access right to a coherency unit, the interface is configured to send a first type of address packet on the address network if the global access state of the coherency unit within the node is the modified state and a second type of address packet otherwise. The memory is configured to respond to receipt of the second type of address packet by sending a data packet on the data network, regardless of whether the memory currently has an ownership responsibility for the coherency unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.