公开(公告)号：US20220350643A1

公开(公告)日：2022-11-03

申请号：US17867635

申请日：2022-07-18

Applicant: Imagination Technologies Limited

Inventor： Wei Shao ,  Christopher Wilson ,  Damien McNamara

IPC: G06F9/48 ,  G06F9/30 ,  G06F9/38 ,  G06F21/62 ,  G06F21/64 ,  G06F11/10 ,  G06F11/14 ,  G06F11/16

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.

公开(公告)号：US20240248750A1

公开(公告)日：2024-07-25

申请号：US18626000

申请日：2024-04-03

Applicant: Imagination Technologies Limited

Inventor： Wei Shao ,  Christopher Wilson ,  Damien McNamara

IPC: G06F9/48 ,  G06F9/30 ,  G06F9/38 ,  G06F11/10 ,  G06F11/14 ,  G06F11/16 ,  G06F21/62 ,  G06F21/64

CPC classification number: G06F9/4843 ,  G06F9/30043 ,  G06F9/3877 ,  G06F11/1004 ,  G06F11/1497 ,  G06F11/1641 ,  G06F21/6245 ,  G06F21/64 ,  G06F2009/3883

Abstract: A graphics processing system for operation with a data store includes processing units for processing tasks. A check unit forms a signature which is characteristic of an output from processing a task on a processing unit, and a fault detection unit compares signatures formed at the check unit. The graphics processing system processes each task first and second times at the processing units so as to generate first and second processed outputs. The graphics processing system write outs the first processed output to the data store, reads back the first processed output from the data store and forms at the check unit a first signature characteristic of the first processed output as read back from the data store; forms at the check unit a second signature characteristic of the second processed output, compares the first and second signatures at the fault detection unit, and raises a fault signal if the signatures do not match.

公开(公告)号：US11977913B2

公开(公告)日：2024-05-07

申请号：US17867635

申请日：2022-07-18

Applicant: Imagination Technologies Limited

Inventor： Wei Shao ,  Christopher Wilson ,  Damien McNamara

IPC: G06F9/48 ,  G06F9/30 ,  G06F9/38 ,  G06F11/10 ,  G06F11/14 ,  G06F11/16 ,  G06F21/62 ,  G06F21/64

CPC classification number: G06F9/4843 ,  G06F9/30043 ,  G06F9/3877 ,  G06F11/1004 ,  G06F11/1497 ,  G06F11/1641 ,  G06F21/6245 ,  G06F21/64 ,  G06F2009/3883

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.

公开(公告)号：US11409557B2

公开(公告)日：2022-08-09

申请号：US16702823

申请日：2019-12-04

Applicant: Imagination Technologies Limited

Inventor： Wei Shao ,  Christopher Wilson ,  Damien McNamara

IPC: G06K5/04 ,  G06F9/48 ,  G06F9/30 ,  G06F9/38 ,  G06F21/62 ,  G06F21/64 ,  G06F11/10 ,  G06F11/14 ,  G06F11/16

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.

公开(公告)号：US20200174829A1

公开(公告)日：2020-06-04

申请号：US16702823

申请日：2019-12-04

Applicant: Imagination Technologies Limited

Inventor： Wei Shao ,  Christopher Wilson ,  Damien McNamara

IPC: G06F9/48 ,  G06F21/64 ,  G06F21/62 ,  G06F9/30 ,  G06F9/38

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.

公开(公告)号：US12242886B2

公开(公告)日：2025-03-04

申请号：US18626000

申请日：2024-04-03

Applicant: Imagination Technologies Limited

Inventor： Wei Shao ,  Christopher Wilson ,  Damien McNamara

IPC: G06F9/48 ,  G06F9/30 ,  G06F9/38 ,  G06F11/10 ,  G06F11/14 ,  G06F11/16 ,  G06F21/62 ,  G06F21/64

Abstract: A graphics processing system with a data store includes processing units for processing tasks. A check unit forms a signature which is characteristic of an output from processing a task on a processing unit, and a fault detection unit compares signatures formed at the check unit. Each task is processed first and second times at the processing units to generate first and second processed outputs. The graphics processing system write outs the first processed output to the data store, reads back the first processed output from the data store and forms at the check unit a first signature characteristic of the first processed output as read back from the data store; forms at the check unit a second signature characteristic of the second processed output, compares the first and second signatures at the fault detection unit, and raises a fault signal if the signatures do not match.