Parallel Programming
 Instructor: Sathish Vadhiyar
 Course number: DS295
 Credits: 3:1
 Semester: Jan, 2023
 Lecture: Tue/Th 1130AM1PM (First class: Jan 3, 2023, 1130AM)
 Office Hours: Fridays, 56 PM
Overview
The objective of this course is to give you some level of confidence in parallel programming techniques, algorithms and tools. At the end of the course, you would (we hope) be in a position to apply parallelization to your project areas and beyond, and to explore new avenues of research in the area of parallel programming.
The course covers parallel programming tools, constructs, models, algorithms, parallel matrix computations, parallel programming optimizations, scientific applications and parallel system software.
Prerequisites
DS 221: Introduction to Scalable Systems
Grading Scheme
 Sessionals
 Midterm [1 No.] (March 2) – 20
 Assignments [2 Nos.] (Assignment 1 Due: Feb 19, Assignment 2 Due: April 10) – 30
 Terminal
 Literature Study Report (Due: Apr 20) – 20
 Final project (Proposal: Feb 26, Final presentation: Apr 26, Final report: Apr 27) – 30
Resources
 Introduction to Parallel Computing. Ananth Grama, Anshul Gupta, George Karypis, Vipin Kumar. Publisher: Addison Wesley. ISBN: 0201648652. 2003.
 Parallel Computing Architecture. A Hardware/Software Approach. David Culler, Jaswant Singh. Publisher: Morgan Kauffman. ISBN: 9814033103. 1999.
 Parallel Computing. Theory and Practice. Michael J. Quinn. Publisher: Tata: McGrawHill. ISBN: 0070495467. 2002.
 An Introduction to Parallel Programming. Peter S Pacheco. Publisher: Morgan Kauffman. ISBN: 9789380931753. 2011.
 Online references for OpenMP, MPI, CUDA
 Various publication materials and references that will be posted along with the lecture slides.
Lecture Slides
Topic  MPI 




Sparse linear algebra pdf
Direct linear algebra pdf 
Sparse LA

Scientific Applications
DFS and Dynamic Load Balancing pdf Mesh applications pdf NBody Simulations pdf Bioinformatics pdf 

System Software 

Assignments
 Turing cluster notes on OpenMP, MPI and CUDA for the assignments
 Assignment 1 –
 Assignment 2 –
 Assignment 3 –
Final Project
The final project has to clearly demonstrate the uniqueness of your work over existing work and show adequate performance improvements. You can work in a team of max 2 members. It can be in
 parallelizing well known algorithms or problems. Examples:
 hybrid executions on both CPU and GPU cores.
 graph algorithms – spanning trees, shortest paths, satisfiability, mesh generation or refinement (e.g., Delaunay)
 sorting, searching
 clustering algorithms
 parallelization of fundamental algorithms you would encounter in an algorithm book. e.g.,
 Introduction to Algorithms. Third Edition. Cormen, Leiserson, Rivest, Stein
 The Design and Analysis of Algorithms. Aho, Hopcroft, Ulman
 Data Structures and Algorithms. Aho, Hopcroft, Ulman
 parallelizing numerical methods, Examples:
 Dense martrix or sparse matrix computations. e.g., Cholesky, QR, Inverse, SVD, conjugate gradient etc.
 >Transforms (FFT, wavelet etc.)
 Any numerical method you would encounter in matrix/numerical methods book. e.g.,
 Introduction to Numerical Analysis. Second Edition. Hildebrand
 Elementary Numerical Analysis. Third Edition. Conte, de Boor
 System software. Examples:
 Techniques for scheduling or mapping parallel tasks to processors to achieve least makespan or throughput
 Load balancing techniques for irregular computations
 Automatic techniques for splitting tasks among GPU and CPU cores.
 Automatic data management techniques for GPU cores.
 Proposing genetic programming abstractions
 Fault tolerance
Sample Projects from Previous Years
 Finding maximum clique in hybrid system – pdf
 Parallel hybrid implementation of SVM – pdf
 GPU TSP – pdf
 GPU implementation of implicit RungeKutta methods – pdf
 Parallel implementation of shared nearest neighbor clustering algorithm – pdf
 Hybrid implementation of alternate least square algorithm – pdf
 Approximate knearest neighbor search – pdf
 Incremental Delaunay triangulation – pdf
 kmaximum subarray problem – pdf
 Scale Invariant Feature Transform (SIFT) – pdf
 AKS algorithm for primality proving – pdf
 Betweenness centrality – pdf
Ethics and Rules
Ethics
 Please do not even exchange ideas with your friends since there is a thin line between exchanging ideas and codes looking the same.
 Please do not look up web/books for solutions.
 See Dr. Yogesh’ nice writeup on plagiarism policies in his HPC page
Deadlines
All assignments will be evaluated for a maximum of 10. There will be a penalty of 1 for every additional day taken for submission after the assignment due date.
Thus, you will have to be judicious regarding deciding when to submit your assignments.
Example
Suppose you have completed 1/2 of the assignment by the due date.
Scenario 1:
You think that it will take another 1 day to finish 3/4 of the assignment. In this scenario, if you submit by the due date, you will get a maximum score of 5 and if you submit a day after, you will get a maximum score of 6.5 (=7.51, 1 for the extra day). Thus, you will get better score if you take an extra day, finish 3/4 of the assignment and then submit.
Scenario 2:
You think that it will take another 3 days to finish 3/4 of the assignment. In this scenario, if you submit by the due date, you will get a maximum score of 5 and if you submit 3 days after, you will get a maximum score of 4.5 (=7.53, 3 for the three extra days). Thus, you will get better score if you submit your assignment that is 1/2 complete by the due date than submit the assignment that will be 3/4 complete after 3 days.