Hitachi, Ltd.

Eiji Nishijima

Sungho Kim

Setsuo Tsuruta

Toshihiro Eguchi

Kenichi Ishii

Yoshihito Ide

A computer system includes a plurality of computer nodes, each including an external communications unit. An application unit executes processing in accordance with a processing request. A synchronization unit establishes synchronization of the processing between each computer node and other computer nodes. The processing is executed by each computer node, and an inter-node communications unit executes transmission/reception of information between each computer node and the other computer nodes. The synchronization unit transmits the processing request to the other computer nodes via the inter-node communications unit, the processing request being received by the external communications unit. Also, the synchronization unit receives processing requests from the other computer nodes as well via the inter-node communications unit. Based on the number of the computer nodes that have received the same processing request via the external communications units, the synchronization unit selects a processing request that should be executed by the application unit.

Computer system including plural computer nodes synchronized with each other

A computer system has a plurality of computer nodes, and each computer node has a plurality of virtual computers and a control base unit controlling the virtual computers. Each virtual computer constitutes a multiplexing group with another virtual computer operating on another computer node different from its own computer node, with one operating as the master and the other as the slave. The control base unit controls whether each virtual computer is operating as either the master or the slave, and monitors the respective states of each virtual computer. The control base unit, when it has detected in its own node a failure of the virtual computer operating as the master virtual computer, makes a decision whether to also switch the other virtual computers operating on its own computer node from master virtual computers to slave virtual computers with the virtual computer in which the failure occurred.

Computer system to switch logical group of virtual computers

The present invention automatically generates a data block indicating the problem to be solved and the status to be aimed at which is called a goal by goal generating knowledge which is stored beforehand for a message given from the external or internal according to a situation change, dynamically generates and executes a plurality of goals in correspondence with the situation which changes with time by attaining the generated goal using goal attaining knowledge such as a goal strategy net and obtaining a solution, performs cooperation control consisting of at least one of partition, integration, and suspension of a goal, and realizes advanced intelligence for a system which corrects a schedule in real time.

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Yokohama, Japan

Eiji Nishijima