Accession Number : AD0686988

Title :   A SIMULATOR OF MULTIPLE INTERACTIVE USERS TO DRIVE A TIME-SHARED COMPUTER SYSTEM.

Descriptive Note : Master's thesis,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE PROJECT MAC

Personal Author(s) : Greenbaum,Howard Jacques

Report Date : OCT 1968

Pagination or Media Count : 185

Abstract : Constructing and maintaining a time-shared computer system requires a controlled, repeatable environment for making performance measurements. This thesis describes the use of a small second computer to simulate the actions of multiple interactive users over individual communication lines. Each simulated user exhibits responses similar to those of a 'normal' interactive user; these are recognized and verified by the 'simulator.' The simulator also emulates a 'think time' corresponding to a normal user's think time between typing lines on the console. Text corresponding to a user's console input, as well as control information regarding think time simulation and verification of responses from the system being tested, are retrieved from prepared scripts which have been pre-stored on the small computer's magnetic disc unit. Although the programming package is capable of simulating up to 12 users, only four are simulated here. The simulator system is intended to be used to test the M.I.T. CTSS and Multics time-shared computer systems. However, it is designed to be adaptable for testing most time-shared computer systems having serial character oriented input/output over communications lines interfacing with 103A compatible data sets. (Author)

Descriptors :   (*DIGITAL COMPUTERS, TIME SHARING), (*TIME SHARING, SIMULATORS), INTERACTIONS, REAL TIME, SIMULATION, DATA TRANSMISSION SYSTEMS, COMPUTER PROGRAMMING, MULTIPLE OPERATION, THESES

Subject Categories : Computer Programming and Software
      Computer Hardware
      Computer Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE