License
SMERFS and SMERFS^3 were developed via Department of
Defense funding, and as a project paid for by United
States tax-dollars, the software is freely available.
It used to be that to get it, one would have to contact
Dr. Farr directly to have
files emailed. This resulted in a significant lack
of information on the web for people looking for SMERFS
while at the same time generating unnecessary workload
for kind Dr. Farr.
Dr. Farr has given his permission to provide SMERFS via the web,
including the source.
[implementation notes]
SMERFS V [1982-1996]
Statistical
Modeling and
Estimation of
Reliability
Functions for
Software
SMERFS V, also known as SMERFS 5, is the latest, offically blessed
version of SMERFS. It was written in FORTRAN 77 and designed to
be highly portable.
Interactive, sequential, text menus. [FORTRAN 77 source]
- SMERFSV.zip (143k) -
Windows, binary only.
- smerfs50.gz (94k) - Unix, Slackware 8.1, 2.4.18 kernel, GCC 3.1, ELF, binary.
SMERFS Cubed [1996-present]
Statistical
Modeling and
Estimation of
Reliability
Functions for
Systems:
(Software,
Hardware,
and Systems)
SMERFS Cubed, SMERFS^3, and SMERFS3 are all the same nomenclature
for the same pieces of software. It was designed and implemented
by Oliver Smith.
SMERFS Cubed is the next generation of SMERFS, it works with
Software, Hardware, and System models. Note, however, that
note all models are avaiable, and those new models that are
available are something you should be thanking NASA for funding.
Unfortunately, relatively little official documentation
exists at this time for SMERFS.
SMERFS3.zip [rev 2](1.9Meg) -
Graphical Windows-based version of SMERFS^3. While this archive
includes some online help, you will want to snag documenation,
presentation, and article information below until there's an official
user's guide.
SMERFS Documentation
Comparing SMERFS V with SMERFS^3 (Word, 1 Page)
[html]
SMERFS^3 Data Input Specifications (Word, 1 Page)
Courses
Taken from Dr. Behrouz H. Far's (not the same as Dr. William Farr) software engineering SENG521 course (Chapter 12):
Presentations
NASA Training March 14, 2002 (PowerPoint, 45 Slides)
Software Reliability & SMERFS^3
A Methodology and Tool for Software Reliability Assessment
Provides an overview of software reliability and illustrates the
SMERFS^3 tool for software reliability assessment.
Using SMERFS^3 (PowerPoint, 7 Slides)
Presentation Handouts for using SMERFS^3, the GUI version.
Articles
Pratical Software Reliability Modeling (Word, 9 Pages)
An article by Dolores Wallace, provided by Dr. Farr, which discusses
how SMERFS^3 was used in the real world by NASA's Software
Assurance Technology Center at the Goddard Space Flight Center.
As you can see, there are limited resources documenting SMERFS, both its usage and its
internals. If you are an educator that has produced materials pertaining to SMERFS, please
support the SMERFS community by having that material hosted here for free.
[Contact the site administrator.]
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