An Introduction to CMMI - Softwareresearch.net

Capability Maturity Model Integratoin (CMMI) and its Assessment Process

Martin Höggerl Bernhard Sehorz

Seminar in Computer Science 2005/2006 Prof. W. Pree

Contents • Introduction • Overview of CMMI • CMMI and ISO/IEC 15504 • Assessing CMMI

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Introduction • The three factors in software development: People

 @  @ @ @ @ @ @ @

 ~ 

Process

@ @ @ @ 

Technology

• Process struggles to be accepted 2

Process Improvement • As the process factor gains more acceptance, various process models are being developed

• Organizations seek to improve software quality by improving their development process

• CMMI is one of the process models available

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A Short History of CMMI • The Software Engineering Institute of Carnegie Mellon University develops CMM during the late 1980s

• Success causes various CMMs to be developed • CMMI aims to integrate some of those • Result: A model framework and an initial set of integrated models 4

Structural Elements in CMMI • 25 Process areas (PAs): Each PA denes a set of goals and a set of practices

• Specic and generic goals:

Generic goals (GGs) are

valid for all PAs; specic goals (SGs) are specic to a certain PA

• Specic and generic practices (SPs/GPs):

Are sup-

posed to satisfy the respective goals 5

Example • Process area: Requirements management • Includes single SG Manage requirements . . . • . . . and 5 SPs, including: 1. Obtain an understanding of requirements 2. Obtain commitment to requirements

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CMMI Representations • Continous: Grades each PA by assigning capability levels but not the process as a whole

• Staged: Grades the process as a whole by assigning maturity levels

• Comparison:

 Focus on the PA vs. focus on the whole organization  exible vs. static order of PAs in process improvement  ne grained vs. coarse grained rating 7

CMMI and ISO/IEC 15504 • ISO/IEC 15504 and SPICE • Goals of SPICE  Assist standardization eort  User trials to gain experience  Create market awareness

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Dierences (1) • Process categories CMMI

ISO/IEC 15504

Engineering Support Project Management Process Management

Engineering Support Management Organisation Customer-Supplier

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Dierences (2) • Processes without equivalent in CMMI  CUS.4 (Operation Process)  SUP.7 (Audit Process)  MAN.1 (Management Process)  ORG.4 (Infrastructure Process)  ORG.6 (Reuse Process) 10

Dierences (3) • Representation  CMMI: staged, continuous  ISO/IEC 15504 : continuous

• Organizational capability • Role of lead assessor 11

The Assessment Team • Lead assessor requirements  Introduction to CMMI training  Assessment team experience  Advanced CMMI training  SCAMPI lead assessor training or upgrade training (for current lead assessors)

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The Assessment Team • Assessment team requirements  Understanding for the organization's business  Solid software engineering background  Management experience  Experience in measurement, quality assurance  Each assessment team member should be willing and able to work on an assessment team 13

Examples for CMMI Assessments • Example 1 : CMMI Assessment for HNIT Consulting Engineers by Students from the University of Iceland

• Example 2 : CMMI-based Assessments Conducted for AVL Graz Instrumentation Test Systems by Kasse Initiatives www.dtic.mil/ndia/2001cmmi/kasse.pdf

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Example 1 • Company : SW-Department of HNIT Consulting Engineers

• About the assessment team:  Guðlaugur Kr. Jörundsson  Sveinbjörn Guðmundsson  Martin Höggerl 15

Example 1 • Timeframe : 2.5 weeks • Process Areas  Requirements Management (REQM)  Measurement and Analysis (MA)  Conguration Management (CM)

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Example 1 • Preparation  Presentation of CMMI concept  Preparation time for company (collect evidence)

• Assessment (2 hours)  Presentation evidence (take notes)  Discussion

• Results (rating, levels) 17

Example 2 • Company : AVL Graz Instrumentation Test Systems • About the assessment team:  Lead Assessor was a Senior or Principal Consultant with Kasse Initiatives  Assessment Team Coordinator was the same for all ve sites  All AVL business sites had core assessment team members who attended the SEI Intro to CMMI 18

Example 2 • Preperation : Questionnaires  about the company  about readiness to change something  about structure of the organization  about documented processes

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Example 2 • Online review of documented processes  Process-owners give presentation  Questions could be

∗ Clarify/Expand a point ∗ Go to referenced document/template/guideline ∗ Why was this information placed here ∗ Show example projects 20

Example 2 • Advantages of Online review  Reduces the time required to accomplish a detailed look at the documented processes  The ones presenting the process are experts in where important ideas are located within the document  Any issue can be required to be reviewed again with little loss of time  Having experts describe their documented processes reduces the risk of long debates over the value of the documented processes 21

Example 2 • Presenting the results  Presenting the Goals of the assessment  Presenting the SCOPE of the assessment  Presentation of the Generic Practices for the set of process areas  Presentation of the process areas in terms of Plus Points, Weaknesses and Recommendations  Presentation of background of related process areas that were not assessed (possible dependencies) 22

Thank you for your attention!

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