Accession Number : ADA190886

Title :   High Resolution Process Timing 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) : Maloney, Allen D

PDF Url : ADA190886

Report Date : 30 Oct 1987

Pagination or Media Count : 9

Abstract : A high-resolution process timing facility, called HRTIME, has been implemented for the Cedar system. HRTIME is an extension of the Concentrix USER and SYSTEM process states with 10 usec accuracy. In addition, HRTIME provides individual processor timing measurements to give a detailed account of the time spent in various states of sequential and concurrent execution. The main purpose of this manual is to explain how to use the HRTIME facility. In particular, the manual discusses how to access the timing data, to correctly time a program section, and to interpret the resulting time measurements. Although a brief overview is given describing what the time measurements are and how they are produced, the user should refer to BELM87 for a complete discussion of the HRTIME design and implementation. Keywords: Multiprocessors, Fortran, Program compilation.

Descriptors :   *HIGH RESOLUTION, *COMPUTER PROGRAM DOCUMENTATION, TIME, MEASUREMENT, PROCESSING EQUIPMENT, FORTRAN, MULTIPROCESSORS

Subject Categories : Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE