A CPU Schedule Algorithm Simulator By: Renwei Yu

Motivation The CPU is one of the primary computer resources, its scheduling is a very important topic. The main difficulty in learning CPU scheduling from a textbook is the lack of interactivity inherent in its static representation Textbooks often simplify the illustration of various CPU scheduling algorithms by using an unrealistic process model

The Strength of My Simulator Uses graphical simulation to convey the concepts of various scheduling algorithms for a single CPU. It uses a more realistic process model that can be configured easily by the user.

The Strength of My Simulator It graphically depicts each process in terms of what the process is currently doing against time It allows the user to make his own scheduling decisions, through the very easy-to-use graphical user interface of the simulator.

Scheduling Algorithm FCFS Round Robin Shortest Process Next Shortest Remaining Time Highest Response Ratio Feedback

Graphic User Interface Operation Frame It allows the user input the information of all the process and do different operation provided by the frame Simulation Frame It graphically depicts each process in terms of what the process is currently doing against time Result Frame It displays empirical result data from simulated CPU scheduling algorithm to the user

Operation Frame

Simulation Frame

Result Frame

Future Work I will improve the simulator to make it change the number of processors in the CPU from one to many according to the user’s selection The situation will be more complex There may be one process use many processors and the schedule algorithm will have to consider more issues

Thanks a lot! Questions?