Data processing apparatus and data processing method

Details Data processing apparatus and data processing method Data processing apparatus and data processing method

2005-08-30

2005-08-30

Coulter, Kenneth R. (Department: 2141)

Electrical computers and digital processing systems: multicomput

Network computer configuring

C709S214000, C712S013000

Reexamination Certificate

active

06938078

ABSTRACT:
A data processing apparatus of the present invention includes a plurality of nodes each of which includes at least one processor and which is divided to a plurality groups, a bus to which the nodes are connected, and memory elements provided in the nodes, respectively. Shared memory areas are provided in the groups, respectively, and the nodes access to the shared memory areas. Another data processing apparatus of the present invention includes a plurality of nodes each of which includes at least one processor, a bus to which the nodes are connected, and memory elements provided in the nodes, respectively. The apparatus has a first element which sets the nodes to clusters. A method for data processing in a data processing apparatus, which includes a plurality of nodes divided to a plurality of groups, a bus to which the nodes are connected, and shared memory areas corresponding to the groups, respectively, includes outputting a request addressed to the shared memory area to the bus by one of the node, determining in each of the nodes whether the shared memory, to which the request is addressed, is owned by its one node, and accessing to the shared memory in one of the nodes which determines the shared memory is owned by its own node during the determining step.

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