The Boeing Company

Dick P Wong

Ronald James Koontz

Wing Chung Lee

Sean M Ramey

Murali Rangarajan

Arnold W Nordsieck

Clarke Edgar Moore

Jackson Chia

David Clyde Sharp

Anthony S Fornabaio

Jason Ellis Sherrill

Wing C Lee

Paul Eugene Denzel

Jinhong Miao

Jackson Y Chia

Paul E Denzel

David C Sharp

A device includes a first message queue, a second message queue, a first queue manager coupled to the first message queue, and a second queue manager coupled to the second message queue. The first message queue is configured to store messages received from a first source. The second message queue is configured to store messages received from a second source. The first queue manager is configured to, based, at least in part, on detecting that a first message is added to the first message queue, send a request to a second queue manager. The request includes an indication of the first message. The first queue manager is also configured to, based on receiving an acknowledgement from the second queue manager and determining that the acknowledgement indicates that a second message matching the first message is stored in the second message queue, output a match indicator indicating the first message.

Systems and methods of aligning messages from multiple sources

A system, method and computer program product synchronize a plurality of processes of one or more applications executed by a plurality of processors. In addition to the processors, the system includes a plurality of memories with each memory associated with a respective process and configured to maintain a local count representative of a message of the respective process with which the memory is associated and at least one remote count representative of a message of a corresponding process executed by another processor. The system also includes a reflector configured to reflect the local count of the respective process to a remote count of the corresponding process. For synchronization, a first process of a first application executed by a first processor is configured to enter a delay period if the local count and at least one remote count maintained by the memory associated with the first process fail to match.

System and method for synchronizing communications between a plurality of processors

A method for managing data transfer for a plurality of processors. Transfer messages exchanged between processor units and an external node in an integrity manager located in hardware in communication with the processor units and the external node are received. An exchange of the transfer messages is managed by the processor units with the external node based on a selected mode in mixed integrity modes such that redundantly calculated outputs from the processor units in a high integrity mode match.

Message synchronization system

A method for synchronizing processor units. An external synchronizer is communicated with to determine whether an undesired amount of skew is present between a first processor unit and a second processor unit in communication with a synchronization system. The first processor unit is selectively directed to perform an action without generating a needed result such that the undesired amount of skew between the first processor unit and the second processor unit is reduced when the undesired amount of skew is present in the first processor unit. The first processor unit and the second processor unit are associated with each other for a high integrity mode in which integrity checks are performed on corresponding messages generated by the first processor unit and the second processor unit.

Instruction processing alignment system

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Monterey Park, CA, United States of America

Dick P Wong