International Business Machines Corporation

Deepak Mohan Advani

Rajendra D Panda

John Paul Marino

James Andrew Pierce

Dennis George Weinel

Robert Spencer Welch

Michael Justin Byron

Steven Robert Hansell

Ko-Yang Wang

Robert Michael Straub

Ronald G Coleman

Yun-Pong Huang

Owen K Monroe

Todd Ming Li

Miner H Gleason, Iii

Todd Ming Chun Li

A visualization tool for creating graphic displays of trace data produced by a parallel computer program execution monitoring system. The visualization tool contains a display monitor, possible input devices, a mass storage device, and a computer system. Trace data is converted into data structures and later pixel maps to ultimately generate processing activity diagrams for each processor in the computer system. If more than one processor is present, more than one processing activity diagram can be generated and simultaneously displayed on the same screen in form of strip graphs and for certain indicated time intervals. An average processor utilization diagram is then calculated and plotted on every processor activity diagram for comparison purposes. Browsing through these strip graphs all at the same time while comparing them against the average utilization graph will allow a user to easily redistribute workload if necessary and/or locate problem situations.

Visualization tool for graphically displaying trace data produced by a

Visualization tool for graphically displaying trace data

Apparatus and an accompanying method for implementing a communications protocol for use in generally a distributed, and particularly a highly parallel, multi-processing system (5), for communicating application data of arbitrarily varying strides between separate processors and generally without the need for intermediate data storage. Specifically, application data is transferred through a succession of packets (770) between originating and destination application programs (252), with each packet containing a partial data message. Each partial data message contains a portion of the data that is stored in a stride one portion of an originating application data memory (700). Upon reception, each data portion is written into a stride one portion of a destination application data memory (760). An application interface (254), executing independently at both the originating and destination processing elements (10.sub.1, 10.sub.J+1) locally and respectively determines the starting address and length of each separate stride one data portion stored in the originating application data memory and for each separate stride one area in the destination application program memory that is to receive application data.

Communication protocol for handling arbitrarily varying data strides in

Growing community of inventors

Poughkeepsie, NY, United States of America

Deepak Mohan Advani