The PAWS/STEM Programs

These programs are Markov model solvers. They use the exact same input language as the SURE program and compute the death state probabilities under the assumption that the recovery distributions are exponential.

Executable Code and Source for Sun SPARCstations (SunOS) for the SURE/ASSIST programs is available in "sun_sure-assist.tar.gz". A new experimental version for PCs running Linux is also available there.

Executable Code for Linux system for the SURE/ASSIST programs is available in "Linux_sure-assist.tar.gz". A new experimental version for PCs running Linux is also available there. The following program documentation is available:

Butler, Ricky W.; and Stevenson, Philip H.: The PAWS and STEM Reliability Analysis Programs. NASA Technical Memorandum 100572, Mar. 1988.

A detailed tutorial on modeling with ASSIST and SURE is available (postscript):

Ricky W. Butler and Sally C. Johnson, Techniques for Modeling the Reliability of Fault-Tolerant Systems With the Markov State-Space Approach , NASA RP-1348, September 1995, pp. 130

Curator and Responsible NASA Official: Ricky W. Butler (R.W.Butler@LaRC.NASA.Gov)
Last modified: 6 April 2001 (11:36:44)