Running PRISM /

Computing Steady-state And Transient Probabilities

If the model is a CTMC or DTMC, it is possible to compute corresponding vectors of steady-state or transient probabilities directly (rather than indirectly by analysing a property which requires their computation). From the GUI, select an option from the "Model | Compute" menu. For transient probabilities, you will be asked to supply the time value for which you wish to compute probabilities. From the command-line, add the -steadystate (or -ss) switch:

prism poll2.sm -ss

for steady-state probabilities or the -transient (or -tr) switch:

prism poll2.sm -tr 100.0

for transient probabilities, again specifying a time value in the latter case. The probabilities are computed for all states of the model and displayed, either on the screen (from the command-line) or in the log (from the GUI). For both steady-state and transient probability computation, PRISM assumes that the initial probability distribution of the CTMC is an equiprobable choice over the set of initial states.

PRISM Manual

Running PRISM

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