<p> System performance evaluation is an on-going task for computer system management personnel in order to fine-tune the system operations. One of the evaluation aids that is readily available for the CDC 6400 computers is the job accounting dayfile maintained by the operating system NOS. A set of three programs in FORTRAN has been developed to analyze the dayfile with a view to evaluating the system performance. Program PHASEl prepares the dayfile for analysis. Program PHASE2 creates a job summary file with information on system resources utilization by each job. Program PHASE3 analyzes the job summary file by evaluating various parameters characterizing the system workload and performance at regular time intervals. The results are displayed in tabular and graphical forms. Test results from the analysis of a limited number of dayfiles are discussed. </p> / Thesis / Master of Science (MSc)

<p> The object of this work was to evaluate the Supernova ninicomputer as a process simulation tool. To accomplish this obje c tive the GEMCS ste2dy-state simulation system wa.s programmed for the Supernova. This system was programmed to run in five different modes, BASIC , two modes which require that al.L progra1ns are written in Assembly Language, and two modes in which programs may be called from the disk. Of these latter two modes, one requires all programs to be written in Assembly Language; the other mode allows programs to be written in Assembly Language or FORTRAN IV. </p> <p> Two case studies which had previously been run on the CDC 6400 were run on the Supernova to test and evaluate f our of the modes in which GEMCS was proerammed for the Supernova. </p> <p> The studies have also provided an a ssessment of the hardware and softws.re facilities of the Supernova and the results of thjs assessment were documented. In addition the opera tion of the various strategies used to impl ement GEMCS have provided an indication of the feasibility of the impl ementation of the dynamic system simulation program, DYNSYS. </p> / Thesis / Doctor of Philosophy (PhD)