PURPOSE: To facilitate the model preparation and the analyzed result grasping and to decrease the design load by performing the input and the instruction of a parameter for performance evaluation with icon and menu and displaying the analyzed result through a window to open from the icon.

CONSTITUTION: After a queve button 49 is clicked and the queve is set to the area of a view port window 14, a window open button 70 is clicked and a setting and result window is opened and a cue name, the number of servers etc., are set. Next, the operation is repeated and one more queve is formed. An arrow button 54 is clicked, the section between respective queve is linked with a line and the linking relation is set. Next, a setting window open button 9 is clicked, the window is opened and the maximum number of loops is set. Next, an analyzing method selecting window open button 10 is clicked, the analyzing window is opened, the desired analyzing method is selected, and analysis is performed. After analysis, the setting window is opened and the analyzed result is grasped.