Fault containment system for multiprocessor with shared memory
US5761413A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/562
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multiprocessor system has a plurality of processing cells, each including a processor and memory, interconnected via a network. The memories respond to requests by the processors for accessing data and, absent fault, transmitting it in response packets to at least to the requesting processors. A fault containment element responds to at least certain faults during access or transmission of a datum for including within the respective response packet a fault signal that prevents the requestor from accessing the datum. If a fault is detected in a datum not previously detected as faulty, a marking element can include a "marked fault" signal in the response packet. Whereas, it can include an "unmarked fault" signal when it detects a fault associated with a requested datum, but not specifically isolated to that datum. When a request is made for a datum which had previously been detected as faulty, the marking element can include in the response packet a "descriptor fault" signal. This facilitates identification of a particular source of an error and prevents that error from propagating to other processing cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.