Topics


Distributed Algorithms
Com S 612


Course Topics/Chapters/Papers


The following is a tentative schedule of the topics we will be covering in class.

Week Date Book Chapters/ Papers Topics
1 Aug 21 AW Section 1 Course Policies
Introduction to Distributed Computing
1 Aug 23 AW Section 2.1 Formal Model for Message Passing Systems
2 Aug 28 AW Section 3.1, 3.2 Proofs comparing the strength of various models
Leader Election in Rings
2 Aug 30 AW Section 3.3.1 O(n^2) message complexity algorithm for asynchronous rings
3 Sept 4 AW Section 3.3.2 O(n log n) message complexity algorithm for asynchronous rings
3 Sept 6 AW Section 3.3.3 An n log n lower bound for asynchronous rings
4 Sept 11 AW Section 3.4.1 O(n) message complexity algorithms for synchronous rings
4 Sept 13 AW Section 4.1 Formal Model for Shared Memory Systems
5 Sept 18 AW Sections 4.2, 4.4.1 The Mutual Exclusion Problem
Lamport's Bakery Algorithm
5 Sept 20 AW Section 4.4.2 A Bounded Mutual Exclusion algorithm for 2 processors
6 Sept 25 AW Section 4.4.3 A Bounded Mutual Exclusion algorithm for n processors
6 Sept 27 AW Section 4.4.4 Lower Bound on number of Read/Write Registers
7 Oct 2 AW Section 4.4.4 Lower Bound on number of Read/Write Registers (contd.)
7 Oct 4 AW Section 4.3.1, 4.3.2 Mutual Exclusion using Powerful Primitives
8 Oct 9 AW Section 4.3.3 Lower Bound on number of Memory States
8 Oct 11 AW Section 5.1.1 - 5.1.3 Consensus in Synchronous Systems with Crash Failures
9 Oct 16 AW Section 5.1.4 (f+1)-round Lower Bound for Consensus
9 Oct 18 AW Section 5.2.1 - 5.2.3 Consensus in Synchronous Systems with Byzantine Failures
Lower Bound on Degree of Fault-Tolerance
10 Oct 23 AW Section 5.2.4 - 5.2.5 An Exponential Message Size Algorithm
A Polynomial Message Size Algorithm
10 Oct 25 AW Section 5.3 Impossibility of Consensus in Asynchronous Systems
11 Oct 30 AW Section 14.1 - 14.3 Randomization: Leader Election, Mutual Exclusion, Consensus
11 Nov 1 AW Section 6.1 Causality & Time
Logical Clocks and Vector Clocks
12 Nov 6 AW Section 6.2 - 6.3 Consistent Cuts
Clock Synchronization
12 Nov 8 AW Section 8.1 Specification of Broadcast Services
13 Nov 13 AW Section  9.1 - 9.2 Distributed Shared Memory
Linearizability & Sequential Consistency
13 Nov 15 AW Section 9.3  Algorithms for Linearizability & Sequential Consistency
- Nov 20 - Fall Break
- Nov 22 - Fall Break
14 Nov 27 AW Section 9.4 Time Lower Bounds for Linearizability & Sequential Consistency
14 Nov 29 AW Section 10 Fault-Tolerant Register Simulations
15 Dec 4 - Student Presentations
15 Dec 6 - Student Presentations
 16 Dec 10 - Student Presentations