Statistics

The standard statistics of the simulation are requested by the STATISTICS declaration (see 2.10) in which nodes and variables for which statistics are wanted are indicated. Statistics are always displayed at the end of the simulation run. They may also be displayed when a STAT instruction (see 7.20) is executed or by request from the Run Interactive Menu. The statistics presented are:

• The title of the experiment; by default "Basic Experiment". The user can put other titles from the program (see instruction TITLE, section 6.27) or from the Execution Menu.
•  The total time of simulation and the last time in which the statistics were initialized (see procedure CLRSTAT, section 7.4).
•  The number of the replication.
•  The date and time of the beginning of the execution.
•  The real time spent in the simulation run.
•  For the I type nodes the number of generated messages.
•  For each EL and IL the statistics are:
• the number of entries, in the list.
•  the actual length.
•  the maximum length attained.
•  the mean length and its deviation.
•  the maximum waiting time that one message had to wait in the list.
•  the mean waiting for all the messages that were in the list.
•  its deviation.
•  the time that the list remained empty.
• For the E types nodes the mean time in the system of the messages destroyed in the node and its deviation.
•  For the used time of the resources and the requested variables the statistics given are:
• the mean (t) and deviation of the variables as a function of time.

Example: if a variable take the values:
2 at time 0; 5 at time 4; 4 at time 5; 7 at time 8; and remain 7 to the end time, that is 12; then the mean is:
/(12 - 0) = 4.4166667
•  the maximum and minimum values.
•  the mean (v) and deviation of the values attained for the variable.

Example: In the above example this mean is:
/ 4 := 4.5
•  the actual (final) value.

After the statistics the Final Menu is displayed

Mon Mar 20 17:42:51 PST 2000