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| Joseph A. Couvillion, Roberto Freire, Ron Johnson, W. Douglas Obal, M. Akber Qureshi, Manish Rai, William H. Sanders, Janet E. Tvedt, "Performability Modeling with UltraSAN," IEEE Software, vol. 8, no. 5, pp. 69-80, September/October, 1991. | |||
| BibTex | x | ||
| @article{ 10.1109/52.84218, author = {Joseph A. Couvillion and Roberto Freire and Ron Johnson and W. Douglas Obal and M. Akber Qureshi and Manish Rai and William H. Sanders and Janet E. Tvedt}, title = {Performability Modeling with UltraSAN}, journal ={IEEE Software}, volume = {8}, number = {5}, issn = {0740-7459}, year = {1991}, pages = {69-80}, doi = {http://doi.ieeecomputersociety.org/10.1109/52.84218}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, } | |||
| RefWorks Procite/RefMan/Endnote | x | ||
| TY - MGZN JO - IEEE Software TI - Performability Modeling with UltraSAN IS - 5 SN - 0740-7459 SP69 EP80 EPD - 69-80 A1 - Joseph A. Couvillion, A1 - Roberto Freire, A1 - Ron Johnson, A1 - W. Douglas Obal, A1 - M. Akber Qureshi, A1 - Manish Rai, A1 - William H. Sanders, A1 - Janet E. Tvedt, PY - 1991 KW - performability modelling; graphical software package; stochastic activity networks; performability evaluation; UltraSAN; X-Windows-based software package; performability variables; stochastic process; state change; user interface; graphical user interfaces; performance evaluation; Petri nets; stochastic processes VL - 8 JA - IEEE Software ER - | |||
The utility of stochastic activity networks (SANs) for performability evaluation is discussed. UltraSAN, a new graphical, X-Windows-based software package that uses SANs, is described. UltraSAN incorporates three innovations: a class of SAN-level performability variables common to both analytical and simulation solution methods, methods that use the performability-variable choice and the SAN structure to greatly reduce the size of the stochastic process required for an analytical solution, and methods that use the performability-variable choice and the SAN structure to reduce the number of activities checked on each state change, thus speeding the simulation. The UltraSAN modeling framework, organization, and user interface are examined. Model construction and solution are described.