Method for tagging uncorrectable errors for symmetric multiprocessors
US7222270B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2003 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Oct 25, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for identifying, managing, and signaling uncorrectable errors among a plurality of clusters of symmetric multiprocessors (SMPs) detects, manages and reports data errors. The method allows merging of newly detected errors, including memory, cache, control, address, and interface errors, into existing error status. Also, error status is distributed in several possible formats, including separate status signals, special UE (uncorrectable errors) ECC codewords, encoded data patterns, parity error injection, and response codepoints. The error status is also available for logging and analysis while the machine is operating, allowing for recovery and component failure isolation as soon as the errors are detected without stopping the machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.