Patent · US Active

Buffer checker for task processing fault detection

US11409557B2 · kind B2 · utility

1Cited by

4References

22Claims

0Family size

Assignee

Imagination Technologies Limited · GB

Inventors

Wei Shao · New York, US
Christopher Wilson · Owings Mills, US
Damien McNamara · Stapleford, GB

Key dates

Filing date	Dec 4, 2019
Grant date	Aug 9, 2022
Priority date	—
Expiry date	Jul 13, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG06F2201/83
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A graphics processing system for operation with a data store, comprising: one or more processing units for processing tasks; a check unit operable to form a signature which is characteristic of an output from processing a task on a processing unit; and a fault detection unit operable to compare signatures formed at the check unit; wherein the graphics processing system is operable to process each task first and second times at the one or more processing units so as to, respectively, generate first and second processed outputs, the graphics processing system being configured to: write out the first processed output to the data store; read back the first processed output from the data store and form at the check unit a first signature which is characteristic of the first processed output as read back from the data store; form at the check unit a second signature which is characteristic of the second processed output; compare the first and second signatures at the fault detection unit; and raise a fault signal if the first and second signatures do not match.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.