1. CMSC 621: Advanced Operating Systems Advanced Operating Systems
Nilanjan Banerjee
University of Maryland
Baltimore County
Advanced Operating Systems

2. Advanced OS is another name for Distributed OS
An operating system (OS) is:
a software layer to abstract away and manage details of hardware resources
a set of utilities to simplify application development
Applications OS
Hardware
Think about an OS across multiple computers
a software layer to abstract away and manage details of multiple hardware resources
a set of utilities to simplify application development on multiple computers

3. Distributed OS is an OS that works across multiple independent computers
A small sampling of headlines over the past year or so …
90M smart homes; market cap of $6 bn.

4. Home Automation System is a Distributed System
Energy monitoring
Alerts w/Photos
Climate
control
Keyless entry
Remote lock
Tasks (software)
Distributed OS
Devices (hardware)
Really, this project started by asking one question: It’s the future, where’s my smart-home?
Multiple devices cooperate to cater to users’ wishes with little or no effort”. PCs, cameras, thermostats, locks, TVs and pretty much everything else. Think of logical tasks that span these devices to accomplish something useful, like climate control, an alert system or keyless entry.
Devices are $
Slide credit: Ratul Mahajan, An Operating System for the Home

5. Body Sensor Networks for Healthcare is a Distributed System

6. Large-scale Computing/Networking Testbeds are Distributed Systems

7. Designing distributed operating system requires thorough understanding of basic operating systems
Concurrent Programming
Distributed Concurrent Programming
MMU
File Systems
Scheduling
Distributed Versions of these
hardware
Additional Requirements: Networking

8. Designing Distributed Systems is challenging!
Concurrency Control
Threads, Parallelism, Ordering, Race Condition
Communication in Distributed Systems
Clock Synchronization
Transactions
Fault Tolerance
Distributed Storage
Security

9. Is this course for me?
Should be proficient in basic operating systems concepts
Concurrent programming, file systems, memory management,
we will test some of these concepts in the first few lectures, and the first project.
Should be proficient in C++

10. How will I be graded? Homeworks (3 total) (15 points)
Programming Projects (3-4 total) (30 points)
Midterm (20 points)
Finals (30 points)
In Class Discussions and Participation (5 points)

11. Assignments Theoretical Questions on Distributed Systems
With short programming questions
Review of research papers
Classic papers in Distributed systems/Operating systems

12. Projects Groups of 2 (max) Programming Assignment
Both members have to state their contributions.
30 points for (3-4 project)

13. Midterm In-class midterm Design and coding problems Grading
20 points towards final grade

14. Finals In-class finals Design and coding problems (cumulative) Grading
30 points towards final grade

15. Resources you will need
Linux machine or a virtual machine with linux installed
Distributed Systems
Tanenbaum and Steen
2nd Edition

16. Administrivia… Course webpage and reading list
My id:
Grades will be on Blackboard
Discussion Group
Piazza (piazza.com/umbc/fall2015/cmsc621/home)
Class hours: 4:00pm – 5:15 pm (Mon, Wed)
Office hours: 3:00– 4:00 (Mon, Wed) or by appointment
TA: Sandeep Narayanan
Office hours: TBD.
Come and talk to me if you have any questions

17. Quiz based on a Basic OS course