Intel Corporation

Jim Sutton

Richard J Greco

Suresh S Chittor

Jerry G Jex

Keith M Self

Charles E Dike

Wayne D Smith

Craig B Peterson

David W Archer

Don Breazeal

Robert Gatlin

A multiprocessor system and method for minimizing perturbations while monitoring parallel applications. Perturbations due to monitoring the application are minimized by synchronizing all the nodes within the system to a very accurate global time clock such that all the nodes running the application stop and restart running the application at the same time. Within the time period bounded by the stop and restart time, all the performance monitoring data is transferred from performance monitoring data buffers to a secondary memory.

Method and an apparatus for minimizing perturbation while monitoring

An asynchronous interface enabling a processor node operating at a first clocking frequency to transfer and receive information from a communications network operating at a second clocking frequency. The asynchronous interface comprises an input synchronizer and an output synchronizer. The input synchronizer asynchronously receives a first plurality of information packets from the processor node and synchronously transfers the first plurality of information packets into the communications network. The output synchronizer, however, synchronously receives a second plurality of information packets from the communications network and asynchronously transfers the second plurality of information packets into the processor node. Both the input and output synchronizers are coupled between the communications network and the processor node.

Asynchronous interface between parallel processor nodes

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Portland, OR, United States of America

Jim Sutton