Sun Microsystems, Inc.

Thinking Machines Corporation

Emc IP Holding Company LLC

Joshua E Simons

Steven J Sistare

Karen C Jourdenais

Richard Bowker

Donald C Allen

Richard Title

James L Frankel

Sorin Faibish

John Michael Bent

Eriks Sasha Paegle

Patrick S Combes

Michael L Best

Methods and apparatus are provided for fault resilient distributed computing using a continuous data protection feature of virtual machines. An exemplary method by a compute node for executing a process of a distributed application comprises providing a virtual machine having continuous data protection to store a copy of a state of the process in a performance storage tier; and providing a virtual machine to intercept messages of the process and to store a copy of the intercepted messages in a message log, wherein the process communicates with a plurality of other processes executing on other compute nodes, and wherein the plurality of processes employ asynchronous checkpointing. The process optionally communicates with the other processes in the distributed application using one or more virtual networks. The state is optionally moved from the performance storage tier to a capacity storage tier when a new state is stored. The stored state and/or the message log can be purged using a stored epoch counter, or when an explicit checkpoint routine has completed.

Fault resilient distributed computing using virtual machine continuous data protection

A data visualization arrangement for facilitating the display of data items comprising a selected region of an object in a selected one of a plurality of display modes. The arrangement comprises a data object store, an interface, an object region retrieval component and a display. The data object store stores the data object, the data object comprising a plurality of data items in a predetermined organization. The interface receives a region identification for identifying a particular region of the object and a display mode identification. The object region retrieval component retrieves data items from a region of the data object as identified by the region identification received by the interface. Finally, the display receives the data items as retrieved by the object region retrieval mechanism and displays them in the display mode as identified by the display mode identification.

Visualization system including data navigator for use with digital computer system

A data visualization arrangement facilitates the display of a selected region of a multi-dimensional data object in a selected one of a plurality of display modes. The arrangement comprises a data object store, an interface, an object region retrieval component and a display. The data object store stores the data object, the data object comprising a plurality of data items in a predetermined organization. The interface receives a region identification for identifying a particular region of the object and a display mode identification. The object region retrieval component retrieves data items from a region of the data object as identified by the region identification received by the interface. Finally, the display receives the data items as retrieved by the object region retrieval mechanism and displays them in the display mode as identified by the display mode identification.

System and method for displaying a selected region of a

A debugger for use in connection with a parallel computer including a plurality of processing nodes. The debugger enables the operator to establish a processing node set in response to certain criteria, such as the respective identifications of the processing node and their prior processing under the debugger. The debugger, in response to a processing node set establishment command from the operator, enables each processing node to establish and condition a set membership flag in response to the operator-supplied set membership criteria. The debugger is then responsive to a debugging command from the operator to enable the processing nodes to use their respective set membership flags to condition their execution of the debugging command.

Parallel processing system including arrangement for establishing and

A compiler for compiling a computer program wherein the computer program is adapted for use with a data parallel computer. The compiler comprises a front end which generates a parse tree from a source code. In generating the parse tree, the front end coordinates the compilation of type conversion operations and promotion operations such that run-time efficiency is maximized. In other words, the front end compiles the type conversion operations and promotion operations in an order which maximizes run-time efficiency.

System and method for multilevel promotion

The present invention is directed towards a compiler for processing parallel communication instructions on a data parallel computer. The compiler of the present invention comprises a front end, a middle end, an optimizer, and a back end. The front end constructs a parse tree which includes nodes representative of parallel communication instructions. The middle end generates an intermediate representation (IR) tree from the parse tree. The IR tree includes general parallel communication IR nodes representative of target code to carry out parallel communication with general communication. An efficient parallel communication module of the optimizer replaces general parallel communication IR nodes with grid parallel communication IR nodes where doing so would result in more efficient target code. The grid parallel communication IR nodes represent target code to carry out parallel communication instructions with grid communication. The back end generates target code from the optimized IR tree.

Growing community of inventors

Cambridge, MA, United States of America

Joshua E Simons