agil heißt … zuverlässig entwickeln und liefern · agil heißt … zuverlässig ... •1st...
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© improuv GmbH Agile Leadership. http://improuv.com
Agil heißt …zuverlässig entwickeln und liefern
Christoph Mathis
Mario Gadet 20.02.2014
© improuv GmbH Agile Leadership | http://improuv.com
Agile Thinking
• Face-2-Face
• conversational, collaborative, adaptive SW Entwicklung
• Generalisten als Spezialisten
• minimale Übergaben, Teamwork,
• gemeinsame Zielsetzung, breiter Wissensaustausch
• Gesamter Entwicklungprozess und Fortschritt transparent
http://commons.wikimedia.org/wiki/File:Agile_Software_Development_methodology.jpg
© improuv GmbH Agile Leadership | http://improuv.com
Wasserfall vs. Agile Entwicklung
http://www.targetprocess.com/blog/2008/09/waterfall-got-you-down-with.html
© improuv GmbH Agile Leadership | http://improuv.com
Risiko und Lieferwert
• Waterfall Process
• Specify-Design-Implement-Test
• Big-Bang Integration
• Iterative Test Driven Development
• Continuous Integration
© improuv GmbH Agile Leadership | http://improuv.com
Scrum = jeden Sprint liefern
• das Team ist verantwortlich
• Kontinuierliche Verbesserung
• Regelmäßige Lieferung von wertiger Software
• 1st principal Agile Manifesto„Our highest priority is to satisfy the customer through early and continuous delivery of valuable software.”
• Feedback:
• dysfunktional arbeitende Teams, Organisationseinheiten erkennbar
• Agile generates information by aiming to deliver value: Transparency on actual progress, product increments
• What customer wants vs. needs!
© improuv GmbH Agile Leadership | http://improuv.com
Risiko und Kosten per IterationWasserfall Methodik
Specification Design Implementation Testing Deployment Maintenance
Chance of Failure
3M 1M 3M 2M 1M n Years
Iteration, Cycle Time
© improuv GmbH Agile Leadership | http://improuv.com
Cost of ChangeBoehm vs. Beck, Cockburn
http://patrickwilsonwelsh.com/?p=10 http://alistair.cockburn.us/Disciplined+Learning
© improuv GmbH Agile Leadership | http://improuv.com
TCO VergleichTotal Cost of Ownership, Product vs. Project
http://people10.com/blog/total-cost-of-ownership-tco-is-lower-in-agile-development/
© improuv GmbH Agile Leadership | http://improuv.com
Scrum - The Technical Perspective
• Test-Driven Development, Refactoring, Pair Programming, Simple Design, and Continuous Integration.
Unit UnitUnitUnit
UnitUnitUnitUnit
UnitUnitUnit Unit Restaufwand
Zeit
© improuv GmbH Agile Leadership | http://improuv.com
Hardware in the LoopModel-Driven-Engineering
• „reine“ HIL Defizite
• Langfristige Verfügbarkeit von Bauteilen
• Custom-Hardware, ad-hoc Systeme sind teuer
• Starke Limitierung von Datenerfassung und –aufzeichnen
• FPGA
• Prototyping integrierter Schaltkreise
• Wiederverwendbare, Modulare Architektur
• Simulation von Hardware failure modes
• ohne Anpassung der Software (logging, diagnostics)
• erhebliche Kostenreduktion
1. Model
2. Simulate
3. Generate, Synthesis
4. Test on HW
© improuv GmbH Agile Leadership | http://improuv.com
HIL Spektrum
Custom Hardware
• High development NRE
• Static capabilities
• Parts obsolescence
FPGA-based
• Flexibiltiy
• Design insight
• Inexpensive COTS parts
Contractor EDU
• Limited design insight
• Needs contractforesight
• Reduced independency
EDU = Engineering Design Unit
NRE = Non-recurring engineering
© improuv GmbH Agile Leadership | http://improuv.com
Lean High-Quality Delivery Chain
• develop a system that delivers high performance to customers
• optimum production levels demand a reliable supply chain of quality parts
• improve quality and productivity by taking cost and waste out of all facets of an operation
• Lean Management Style
• Get each person/unit/supplier to take initiative to solve problems and improve his or her job.
• Ensure that each persons’/units’/suppliers’ job is aligned to provide value for the customer and prosperity for the company.
© improuv GmbH Agile Leadership | http://improuv.com
Design
Develop
Integrate
Test
Release
Continuous Integration and Delivery
R1.0 R1.2
© improuv GmbH Agile Leadership | http://improuv.com
Continuous Integration and DeliverySIPOC Value Chain
Supplier Input Process Output Customer
Continuous Delivery
Continuous Integration
2. Makethe test
pass
3. Refactor
1. Write a failing
testTDD
Cycle IP Test
Suite
HQ Delivery
Upstream CI
IP Test
Suite
AcceptanceTests
© improuv GmbH Agile Leadership | http://improuv.com
Continuous Integration and DeliveryJenkins und Sonar
© improuv GmbH Agile Leadership | http://improuv.com
Continuous Delivery ResultEmbedded Systems
• automated tests
• traceability of changes
• reduced release time
• improved inter-team communication
• more time for development
• more motivation within the Teams
• know-how sharing (reducing Bus-factor)
• no need on dedicated release manager
• overall quality improvement recognized by stakeholders
© improuv GmbH Agile Leadership | http://improuv.com
Wikispeed C3 - the Open Source Car
• Agile Methoden
• Testgetriebe Entsicklung, Bsp. Handbremse ohneReibung
• Objektorientiere Design Prinzipien
• Contract-first Design (overspec HW interface)
• Modularität, lose Kopplung
• Ergebnis
• simulations and tests before, during and after construction (5 stars NHTSA)
• three months from conception through the first mile
• 637kg (aluminum frame, carbon fiber body)
• 100km/h in 5 sec, Vmax 240km/h, 2.16l/100km
© improuv GmbH Agile Leadership | http://improuv.com
Key Messages
• nach Scrum Einführung weitere Verbesserungen antizipieren
• “sauberes” Scrum als Basis
• Features vertikal schneiden
• Organisation braucht ganzheitliches agiles Mindset
• Software- und Hardwarestände frühzeitig Integrieren
• Continuous Integration und Delivery ist State-of-the-Art
• Investitionen in CI Infrastruktur zahlt sich aus
• nicht nur in Projekten und Budgetzyklen denken, TCO beachten
© improuv GmbH Agile Leadership | http://improuv.com
• Christoph Mathis• Scrum Trainer und Coach• Geschäftsführer• [email protected]• Tel +49 170 3888374
• improuv GmbH• Brecherspitzstr. 8• 81541 München• http://improuv.com
Vielen Dank
• Mario Gadet• Scrum Master und
Continuous Delivery• [email protected]• Tel +49 157 82963844