Iwmeter: A Real-Time and Interactive Parallel Software Monitor for iWarp

Abstract

Performance measurement and monitoring tools are indispensable for research and application developments on a parallel system. To be effective, such tools must be accurate, nonintrusive, efficient. and easy to understand. Private-memory MIMD machines present special challenges, especially due to the amount of data that must be gathered and analyzed, as well as the communication support required to manage these data. This paper describes the iwmeter, a real- time and interactive parallel software monitor for MFLOPS performance. Implemented for the iWarp system, a private-memory multicomputer, the iwmeter is composed of three independent units: the sampling, units. the collection unit, and the reporting unit. Each sampling unit samples the user's program in each processor in a random fashion. The collection unit collects the data gathered by each individual sampling unit, and the reporting unit processes and reports the data to the user. We conclude the paper with an evaluation of the iwmeter's accuracy.

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Document Details

Document Type
Technical Report
Publication Date
Feb 18, 1994
Accession Number
ADA277587

Entities

People

  • Eka N. Ginting
  • Ming-jen Chan

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Computer Programming
  • Computer Programs
  • Computer Science
  • Computers
  • Floating Point Operations
  • Graphical User Interface
  • Instructions
  • Measurement
  • Operating Systems
  • Precision
  • Probability
  • Random Number Generators
  • Random Variables
  • Statistical Sampling
  • Time Intervals
  • User Interface

Fields of Study

  • Computer science

Readers

  • Geospatial Intelligence and Artificial Intelligence Analytics
  • Military Mobilization and Reserve Forces Studies.
  • Parallel and Distributed Computing.