Accession Number : ADA190884

Title :   Concurrency Efficiency User's Manual.

Descriptive Note : Rept. for 1 Oct 86-30 Sep 87,

Corporate Author : ILLINOIS UNIV AT URBANA CENTER FOR SUPERCOMPUTING RESEARCH AND DEVELOPMENT

Personal Author(s) : Malony, Allen D

PDF Url : ADA190884

Report Date : 30 Oct 1987

Pagination or Media Count : 8

Abstract : This document explains how to use a facility for measuring concurrency efficiency on the Alliant FX/8 implemented as part of CSRD's modifications to the Concentrix operating system. A brief overview of the concurrency efficiency analysis is presented first. The CSRD implementation is then described to point out the measurement's limitations. Concurrency efficiency measurements are directly controlled by the user program. Instructions for determining CEFF values from within a program are given. Concurrency efficiency statistics for the entire program are often desired. A tool for generating this data without requiring user program modification is described. Finally, we give some suggestions on the use of CEFF results in association with other program performance information. Keywords: Variables, FORTRAN computations.

Descriptors :   *PROGRAMMING MANUALS, COMPUTATIONS, EFFICIENCY, MEASUREMENT, MODIFICATION, STATISTICS, USER MANUALS, USER NEEDS, VARIABLES, FORTRAN

Subject Categories : Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE