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HISTORY OF
SIMULATION
SOFTWARE
Shashwat Shriparv
dwivedishashwat@gmail.com
InfinitySoft
• History of simulation software is
based on Nance[1995].
• Breaks the years 1955 to 1986 in to
5 periods.
• 1955-60 : The Period of Search
• 1961-65 : The Advent
• 1966-70 :The Formative Period
• 1971-78 : The Expansion Period
•...
• Later one more period is added
which is most recent period:
• 1987-Present:The Period of
Integrated Environment
The Period Of Search
(1955-60)
• Much effort was expended in the
search of :
• Unifying concepts and
• Developments of reu...
The Advent (1961-65)
• The simulation programming lang. in
use today appeared in this period.
• In the beginning there wer...
• The first process interaction SPLs:
• GPSS (General Purpose Simulation
System )
• It is used for quick simulation of
com...
• SIMSCRIPT(1963) which is influenced
by FORTRAN but later it uses its own
SPL.
• It is based on event scheduling.
• GASP(...
The Formative Period
(1966-70 )
• Concepts are reviewed and refined to
promote a more consistent representation
of each la...
• SIMSCRIPT II: it having adv in SPLs
with its free from English-like
language and forgiving compiler.
• ECSL, descendent ...
The Expansion Period
(1971-78)
• Effort were made this period to
attempt to simplify the modeling
process.
• GPSS/NORDEN: ...
• GPSS/H(1977): for IBM Mainframes,
later for minicomputers and PC.
• It compiled and reportedly 5-30
times faster than st...
Consolidation and
Regeneration(1979-86)
• It is beginning of SPL ,written for, or
adapted to desktop computers and
the mic...
• SLAM (Simulation Language for
Alternative Modeling ) provide
multiple modeling perspectives and
combined modeling capabi...
The Present Period
(1987-Present)
• For the growth of SPLs on personal computer and
the emergence of simulation environmen...
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History of simulation software

  1. 1. HISTORY OF SIMULATION SOFTWARE Shashwat Shriparv dwivedishashwat@gmail.com InfinitySoft
  2. 2. • History of simulation software is based on Nance[1995]. • Breaks the years 1955 to 1986 in to 5 periods.
  3. 3. • 1955-60 : The Period of Search • 1961-65 : The Advent • 1966-70 :The Formative Period • 1971-78 : The Expansion Period • 1979-86 : The period of Consolidation and Regeneration
  4. 4. • Later one more period is added which is most recent period: • 1987-Present:The Period of Integrated Environment
  5. 5. The Period Of Search (1955-60) • Much effort was expended in the search of : • Unifying concepts and • Developments of reusable routines to facilitate simulation.
  6. 6. The Advent (1961-65) • The simulation programming lang. in use today appeared in this period. • In the beginning there were: • FORTRAN: Based on packages such as SIMSCRIPT & GASP (General Activity Simulation program ) • ALGOL : Descendent of SIMULA • GPSS (General Purpose Simulation System )
  7. 7. • The first process interaction SPLs: • GPSS (General Purpose Simulation System ) • It is used for quick simulation of communication and computer systems. • GPSS got popularity due to easy in use. • It based on block diagram representation similar to process flow diagram and is suited for queuing models of all kind.
  8. 8. • SIMSCRIPT(1963) which is influenced by FORTRAN but later it uses its own SPL. • It is based on event scheduling. • GASP(1961) based on ALGOL but later it based on FORTRAN. • GASP also used flow chart symbols • It is not a language proper but a collection of FORTRAN ROUTINES
  9. 9. The Formative Period (1966-70 ) • Concepts are reviewed and refined to promote a more consistent representation of each language’s world view. • In this period due to rapid H/W advancement and user demands forced GPSS to undergo major revision: • GPSS/360:Extension to earlier version of GPSS. • Emerged for the IBM 360 computer.
  10. 10. • SIMSCRIPT II: it having adv in SPLs with its free from English-like language and forgiving compiler. • ECSL, descendent of CSL was developed.
  11. 11. The Expansion Period (1971-78) • Effort were made this period to attempt to simplify the modeling process. • GPSS/NORDEN: a pioneering effort that offered an interactive, visual online environment.
  12. 12. • GPSS/H(1977): for IBM Mainframes, later for minicomputers and PC. • It compiled and reportedly 5-30 times faster than standard GPSS with interactive debugging. • GASP –IV(1971): It uses state events in addition to time event.
  13. 13. Consolidation and Regeneration(1979-86) • It is beginning of SPL ,written for, or adapted to desktop computers and the microcomputers. • GASP appeared: 1)SLAM II 2)SIMAN
  14. 14. • SLAM (Simulation Language for Alternative Modeling ) provide multiple modeling perspectives and combined modeling capabilities. • SIMAN (SImulation ANalysis ) proposed a general modeling capability found in SPLs such as GPSP-IV,but it also had a block diagram component similar in some respect to SLAM and GPSS. • It run under MS-DOS constraints.
  15. 15. The Present Period (1987-Present) • For the growth of SPLs on personal computer and the emergence of simulation environments with graphical user interfaces, animation and other visualization tools. • Many of these environment also contain input data and output data analyzer. Shashwat Shriparv dwivedishashwat@gmail.com InfinitySoft
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