Maintaining memory checkpoints across a cluster of computing nodes
US7856421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2007 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Apr 9, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0804
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for increasing reliability and availability of a multi-processor network. A system includes a network with at least two nodes, with each node comprising a multi-processor unit (mpu) and memory. The mpu includes one or more processors and a wiretap unit. The wiretap unit and the memory included in the node are coupled to the processors in the node. The wiretap unit is configured to monitor memory accesses of the processors and convey data indicative of such accesses to a second node. The second node maintains a replica of memory in the first node, and is configured to undo modifications to the memory if needed. In the event of a hardware or software fault, the nodes are configured to restart the application on another node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.