University of Southern California
Center for Systems and Software Engineering
COCOMO Suite Toolset
Ray Madachy, NPS
rjmadach@nps.edu
Winsor Brown, USC
awbrown@usc.edu
25th International Forum on COCOMO and Systems/Software Cost Modeling
November 2, 2010
University of Southern California
Center for Systems and Software Engineering
Agenda
• Introduction to COCOMO Suite Models
• Tools
– Web-based COCOMO Suite
– COINCOMO
– Affiliate Usage
• Future Work
2
University of Southern California
Center for Systems and Software Engineering
Introduction
• The COCOMO suite of models collectively estimate systems
and software engineering effort and schedule, software
defects, dependability return-on-investment, and productivity
improvement.
– Other special extensions also estimate program risk.
• They are all primarily derived from the COCOMO II software
cost estimation model and share some common inputs,
algorithmic approaches, and output types.
• The COCOMO Suite Toolset is being updated for both
desktop and web-based usage scenarios as the USC
COCOMO tool phases out.
• We’ll overview the existing capabilities and long term
evolution plan compatible with future COCOMO Suite model
updates.
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University of Southern California
Center for Systems and Software Engineering
Model Unification Goals
• Allow more
comprehensive cost
exploration with respect
to
– Development decisions
– Investment decisions
– Established project budget
and schedules
– Client negotiations and
requested changes
– Cost, schedule, performance,
and functionality tradeoffs
– Risk management decisions
– Process improvement
decisions
• Provide a single unified tool
to allow users to
–
–
Specify
• System and software components
comprising the software system of interest
• Composition and characteristics of
components
Receive
• A set of comprehensive outputs for system
engineering, software development, and
system-of-systems integration
• Adjusted using the appropriate specialpurpose extensions
4
University of Southern California
Center for Systems and Software Engineering
COCOMO Suite Quantities Estimated
Effort
Effort
by
Phase
Schedule
COCOMO II
X
X
X
COQUALMO
X
Model
X
iDAVE
Defects
ROI
Improvement
Graphs
X
X
COPLIMO
X
COPROMO
X
COCOTS
X
COSYSMO
X
SOSE
X
X
X
X
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University of Southern California
Center for Systems and Software Engineering
Typical Model Usage
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University of Southern California
Center for Systems and Software Engineering
Agenda
• Introduction to COCOMO Suite Models
• Tools
– Web-based COCOMO Suite
– COINCOMO
– Affiliate Usage
• Future Work
7
University of Southern California
Center for Systems and Software Engineering
Model and Tool Matrix
©USC-CSSE
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University of Southern California
Center for Systems and Software Engineering
Web-based COCOMO Suite
• Unifies models in a single application to
explore their interactions and estimate
broader situations.
• Two versions
– Calculator for one-off estimates (with output
archive file)
• Public usage
– Personal edition with file system
• Used extensively at NPS and by some CSSE
Affiliates
©USC-CSSE
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University of Southern California
Center for Systems and Software Engineering
COCOMO Suite Models in Tool
COSYSMO
System size
Systems cost drivers
Systems
Effort
Model
Risk
Model*
COCOMO II
Software size
Software cost and defect
introduction drivers
Defect removal capability
levels
Software
Effort and
Schedule
Model
COQUALMO
Defect
Introduction
Model
Defect
Removal
Model
Systems engineering effort by
phase/activity
Systems engineering risk
management advice
Integrated systems and
software effort by
phase/activity
Software development effort
and schedule by
phase/activity
Software defect levels by type
* Expert COSYSMO
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University of Southern California
Center for Systems and Software Engineering
Sample COCOMO Inputs
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University of Southern California
Center for Systems and Software Engineering
Monte Carlo
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12
University of Southern California
Center for Systems and Software Engineering
COCOMO Outputs
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University of Southern California
Center for Systems and Software Engineering
Monte Carlo Outputs
14
University of Southern California
Center for Systems and Software Engineering
COQUALMO Outputs
15
University of Southern California
Center for Systems and Software Engineering
File System
©USC-CSSE
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University of Southern California
Center for Systems and Software Engineering
Reference Case Study
©USC-CSSE
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University of Southern California
Center for Systems and Software Engineering
COCOMO II Actuals Data
©USC-CSSE
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University of Southern California
Center for Systems and Software Engineering
Agenda
• Introduction to COCOMO Suite Models
• Tools
– Web-based COCOMO Suite
– COINCOMO
– Affiliate Usage
• Future Work
19
University of Southern California
Center for Systems and Software Engineering
ICSM LC Processes for Systems (Hw, Sw & Pw)
University of Southern California
Center for Systems and Software Engineering
ICSM-Sw/RUP Activity/Process Model
University of Southern California
Center for Systems and Software Engineering
Why Multiple Build Software Sub-Systems
• Simplest: Early Functionality in the hands of ALL users
– Architecture/Core plus some functionality
– Implies Full Qualification/Acceptance Sw Testing each
software build so systems can go into Integration & Test
earlier
• Increasingly Complex Systems
–
–
–
–
–
Multiple, diverse "platforms"
Different "foci" of functionality (in each build)
Network Centric Systems Operation
Evolution/federation of legacy systems
System of Systems by design
Traditional Deliver And Enhance
University of Southern California
Center for Systems and Software Engineering
Inception Elaboration Construction Transition
Overlaps Across Software Sub-System Builds
Inception Elaboration Construction Transition
Evolve During Transition [After Sw IOC]
Inception
Elaboration
Construction Transition
Inception Elaboration Construction Transition
Evolve After Architecture Complete
Inception Elaboration with Evol. Req.
Construction
Transition
Incept. Elaboration Construction Transition
I. Elab. Construction Transition
...
University of Southern California
Center for Systems and Software Engineering
ICM Showing Multi-Build Software in a System
University of Southern California
Center for Systems and Software Engineering
ICM Showing Multi-Build Software in DSOS (N layers)
University of Southern California
Center for Systems and Software Engineering
COCOMO II with COPSEMO (for I&T)
University of Southern California
Center for Systems and Software Engineering
COPSEMO: Phased Schedule & Effort Dist.
University of Southern California
Center for Systems and Software Engineering
COINCOMO with COSysMO
• Multiple Build Capability from COINCOMO 2.0
University of Southern California
Center for Systems and Software Engineering
COINCOMO’s Component = COCOMO Project
University of Southern California
Center for Systems and Software Engineering
COINCOMO’s COPSEMO for Single Component
University of Southern California
Center for Systems and Software Engineering
Generated Spreadsheet with Totals
University of Southern California
Center for Systems and Software Engineering
Agenda
• Introduction to COCOMO Suite Models
• Tools
– Web-based COCOMO Suite
– COINCOMO
– Affiliate Usage
• Future Work
32
University of Southern California
Center for Systems and Software Engineering
Affiliate Policies and Benefits
• New versions of tools are available for 1 year to
Affiliates before public release.
• E.g. new features in desktop COINCOMO and web-based
COCOMO Suite
• Use Affiliates private space
• Web-based COCOMO Suite with personal file
system hosted on CSSE for Affiliates.
• Contact Ray Madachy for an account
• Calculator mode available to public
©USC-CSSE
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University of Southern California
Center for Systems and Software Engineering
Where?
• All tools linked to
http://csse.usc.edu/csse/research/COCOMOII/cocomo_downloads.htm
• Web-based tool available at:
http://csse.usc.edu/tools/COCOMOSuite.php *
http://diana.nps.edu/MSAcq/tools/COCOMOSuite.php *
* Or designate specific model as COCOMO.php, COSYSMO.php, etc.
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University of Southern California
Center for Systems and Software Engineering
Agenda
• Introduction to COCOMO Suite Models
• Tools
– Web-based COCOMO Suite
– COINCOMO
– Affiliate Usage
• Future Work
35
University of Southern California
Center for Systems and Software Engineering
Future Plans
• Add noted models and features to desktop and
web-based tools
• Tools may interface using a common, hierarchical
XML data format that also serves as a go-between
for legacy USC COCOMO estimate files and
actuals data.
– An open standard for estimates can be used for integrating with
other estimation tools/models/data and XML utilities.
– Developing interim conversion utilities for USC COCOMO data
format
• Your inputs and feedback are essential
36
University of Southern California
Center for Systems and Software Engineering
References
•
•
•
•
•
•
•
•
•
•
•
Abts C., “Extending The COCOMO II Software Cost Model To Estimate Effort And Schedule For
Software Systems Using Commercial-off-the-shelf (COTS) Software Components: The COCOTS
Model”, USC PhD dissertation, May 2004
Boehm B., Abts C., Brown W., Chulani S., Clark B., Horowitz E., Madachy R., Reifer D., Steece B.,
Software Cost Estimation with COCOMO II, Prentice-Hall, 2000
Boehm B., Valerdi R., Lane J., Brown W., “COCOMO Suite Methodology and Evolution”, Crosstalk,
2005
Chulani S., Boehm B., “Modeling software defect introduction and removal: COQUALMO
(COnstructive QUALity MOdel)”, University of Southern California Center for Software Engineering,
USC-CSE Technical Report 99-510, 1999
Lane J. “Constructive Cost Model for System-of-System Integration,” 3rd ACM-IEEE International
Symposium on Empirical Software Engineering, Redondo Beach, CA, August, 2004
Madachy R., “Heuristic Risk Assessment Using Cost Factors”, IEEE Software, May 1997
Madachy R., Valerdi R., “Knowledge-Based Systems Engineering Risk Assessment”, University of
Southern California Center for Systems and Software Engineering Technical Report, USC-CSSE-2008818, 2008
Madachy R., Boehm B., “Assessing Quality Processes with ODC COQUALMO”, Proceedings of the
2008 International Conference on Software Process, Liepzig, Germany, 2008
Madachy R., “COCOMO Suite”, CS510 Presentation, University of Southern California, September
2005
Valerdi R., Systems Engineering Cost Estimation with COSYSMO, Wiley, 2009
Yang Y., Boehm B., Madachy R., “COPLIMO: A Product-Line Investment Analysis Model, Proceedings
of the Eighteenth International Forum on COCOMO and Software Cost Modeling”, USC, Los Angeles,
CA, October 2003
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