1. Capita Selecta Distributed Systems Danny Hughes, Wouter Joosen, Sam Michiels, Eddy Truyen IBBT-DistriNet, KULeuven September 2011 1

2. September 29, 2010 Capita Selecta - Distributed Sysems: general information 2 Organization & Evaluation First half delivered in Semester 1 – From mid October to December Second half delivered in Semester 2 – From mid February to April Ongoing evaluation through exercises, class interaction and presentation Evaluation typically executed during and immediately after the related course activities

3. September 29, 2010 Capita Selecta - Distributed Sysems: general information 3 Course Activities Tutorial style introduction to key topics Study and discussion of research papers Hands-on experience with technologies Critical assessment of current practices and the state-of-the-art

4. Module 1: Perspectives on The Internet of Things (IoT) Danny Hughes, Wouter Joosen, Sam Michiels October-December 2011 4

5. Wireless Sensor Networks (WSN) Tiny computers with low-power radios self organize to provide distributed sensing of the physical environment: – A key technology for the Internet of Things (IoT) – A growing marketplace: to top $38bn by 2014 – Key apps: medical, logistics, energy conservation, military Driven by technology advances. Moore’s Law predicts: – A chip of the same size doubles in power every two years – Or, the size of a chip of the same power halves every two years (i.e. our devices are getting smaller)

6. Wireless Sensor Networks (WSN) WSN Characteristics: – Large scale: 1000s of nodes over wide areas – Limited Resources: 10MHz CPU, 10K RAM, 48KB flash – Dynamism: node failure, network failure, mobility Two key questions: – How do we implement existing protocols and middleware in such as small space? – What new abstractions, tools and support do we need to build applications for this extreme environment? A rapidly evolving subject area, which requires knowledge of many subjects you have already studied

7. The WSN Module You will revisit key topics such as: – Networking – Operating Systems – Programming Models … applied in a new and challenging IOT context. Using these technologies you will learn to design networked embedded applications for various applications

8. Module 2: Perspectives on Cloud Computing Wouter Joosen, Eddy Truyen IBBT-DistriNet, KULeuven February-April 2012 8

9. An Architecture Paradigm Shift... Cloud computing as the next distributed architecture – Do Scientific and enterprise computing have evolved to a common architecture … ? Mainframe1970sCentralized bulk data processing, multi-user access on terminals (keyboard-screen) Client-server1980sFat clients on workstations, centralized database server Web1990sMulti-tier: web tier, application servers, database.com your business SOA2000sExpose automated business process as a web service B2B communication Cloud2010+Centralized provision of dynamically scalable, multi- tenant software as a service over the Internet Builds further upon SOA

10. An Architecture Paradigm Shift... Cloud computing as the next distributed architecture – Do Scientific and enterprise computing have evolved to a common architecture … ? Mainframe1970sCentralized bulk data processing, multi-user access on terminals (keyboard-screen) Client-server1980sFat clients on workstations, centralized database server Web1990sMulti-tier: web tier, application servers, database.com your business SOA2000sExpose automated business process as a web service B2B communication Cloud2010+Centralized provision of dynamically scalable, multi- tenant software as a service over the Internet Builds further upon SOA Now they want to outsource the problem And hopefully find a solution! Let’s evaluate and improve this approach…. Increased decoupling: a trivial idea, yet hard to turn into reality