GPSS

• General Purpose Simulation System (GPSS):
  • one of the oldest existing modeling languages
  • uses the transaction-based paradigm
  • text-based
• GPSS elements:
  • generation and destruction of entities
  • entering and leaving of queues
  • reservation and freeing of servers
  • delaying of an entity for a given (service) time
• GPSS user chain:
  • flexible queue element in GPSS
  • entities enter with link at front or back end
  • entities can be extracted with unlink and routed arbitrarily
  • possibilities of unlink depend on GPSS implementation
• MatlabGPSS:
  • Matlab-based GPSS implementation
  • freely available
  • combines GPSS statements with general Matlab code
  • Matlab for control structure, statistical and graphical results
  • unlink only for first or last entity