Sun Microsystems, Inc.

William B DeRolf

Gavin G Gibson

John D Acton

Michael D Derbish

Hugh M Humphreys

Steven P Kent

Jack M Hardy, Jr

Steven E Schelong

Ricardo Yong

Gavin James Kirton

Provided is a method, system, program, and data structures for maintaining a database of objects. At least one structured document is received representing an instance of an object including attributes and attribute values defined for a class. Content of the structured document representing the object is added into a database, wherein the database is capable of storing multiple structured documents representing multiple objects. In another implementation, an instance of at least one object including attributes and attribute values defined for a class is generated. For each generated object, a structured document is generated representing the object and including a representation of the attributes and attribute values in the object. Each structured document is transferred to a database program to maintain.

Method, system, program, and data structures for testing a network system including input/output devices

A data processing system comprises a plurality of nodes and a serial data bus interconnecting the nodes in series in a closed loop, for passing address and data information. At least one processing node includes a processor, a printed circuit board and a memory which is partitioned into a plurality of sections, including a first section for directly sharable memory located on the printed circuit board, and a second section for block sharable memory. A local bus connects the processor, block sharable memory and printed circuit board, for transferring data in parallel from the processor to the directly sharable memory on the printed circuit board, and for transferring data from the block sharable memory to the printed circuit board. The printed circuit board includes a sensor for sensing when data is transferred into the directly sharable memory, a queuing device for queuing the sense data, a serializer for serializing queued data, a transmitter for transmitting serialized data onto the serial bus to a next successive processing node, a receiver for receiving serialized data from a preceding processing node, and a deserializer for transforming received serialized data into a parallel format.

Data processing system including a shared memory resource circuit

A data processing system includes a plurality of nodes, a serial data bus interconnecting the nodes in series in a closed loop for passing address and data information, and at least one processing node. In one construction, this processing node has a processor, a printed circuit board, a memory partitioned into first and second sections and a local bus connecting the processor, a block sharable memory section of the memory, and the printed circuit board. The local bus is used for transferring data in parallel from the processor to a directly sharable memory section of the memory on the printed circuit board and for transferring data from the block sharable memory to the printed circuit board. The printed circuit board includes a sensor for sensing when data is transferred into the directly sharable memory, a queuing device for queuing the sensed data, a serializer for serializing the queued data, a transmitter for transmitting the serialized data onto the serial data bus to the next successive processing node, a receiver for receiving serialized data from next preceding processing node, and a deserializer for deserializing the received serialized data into parallel data.

Computing system having multiple nodes coupled in series in a closed loop

Multiprocessor distributed memory system and board and methods therefor

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Layfayette, CO, United States of America

William B DeRolf