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COMP 322: Fundamentals of Parallel Programming (Spring

...

2022)

 

InstructorInstructors:

Mackale Joyner, DH 2071

Head TA:Srdan Milakovic

Co-Instructor:

2063

Zoran Budimlić, DH 31343003

Graduate TAs:Jonathan SharmanAdrienne Li, Austin Hushower, Claire Xu, Diep Hoang, Hunena Badat, Maki Yu, Mantej Singh, Rose Zhang, Victor Song, Yidi Wang  
Admin Assistant:Annepha Hurlock, annepha@rice.edu , DH 3122, 713-348-5186Undergraduate TAs:

Liam Bonnage, Harrison Brown, Mustafa El-Gamal, Krishna Goel, Ryan Green, Ryan Han, Rishu Harpavat, Namanh Kapur, Tian Lan, Tam Le, Will LeVine, Eva Ma, Hamza Nauman, Rutvik Patel, Aryan Sefidi, Jeemin Sim, Tory Songyang, Jiaqi Wang, Erik Yamada, Yifan Yang

 

 

Piazza site:

https:/

Piazza site:

https://piazza.com/rice/classspring2022/jmwfpr1i85n7l4comp322 (Piazza is the preferred medium for all course communications, but you can also send email to comp322-staff at rice dot edu if needed)

Cross-listing:

ELEC 323

Lecture location:

Herring Hall 100Herzstein Amphitheater (online 1st 2 weeks)

Lecture times:

MWF 1:00pm - 1:50pm

Lab locations:

Herring Hall 100Keck 100 (online 1st 2 weeks)

Lab times:

Mon  3:00pm - 3:50pm (Austin, Claire)

Wed 4:30pm - 5:20pm (Hunena, Mantej, Yidi, Victor, Rose, Adrienne, Diep, Maki)Thursday, 4:00pm - 4:50pm

Course Syllabus

A summary PDF file containing the course syllabus for the course can be found here.  Much of the syllabus information is also included below in this course web site, along with some additional details that are not included in the syllabus.

...

The desired learning outcomes fall into three major areas (course modules):

1) Parallelism: functional programming, Java streams, creation and coordination of parallelism (async, finish), abstract performance metrics (work, critical paths), Amdahl's Law, weak vs. strong scaling, data races and determinism, data race avoidance (immutability, futures, accumulators, dataflow), deadlock avoidance, abstract vs. real performance (granularity, scalability), collective & point-to-point synchronization (phasers, barriers), parallel algorithms, systolic algorithms.

...

3) Locality & Distribution: memory hierarchies, locality, cache affinity, data movement, message-passing (MPI), communication overheads (bandwidth, latency), MapReduce, accelerators, GPGPUs, CUDA, OpenCL.

To achieve these learning outcomes, each class period will include time for both instructor lectures and in-class exercises based on assigned reading and videos.  The lab exercises will be used to help students gain hands-on programming experience with the concepts introduced in the lectures.

To ensure that students gain a strong knowledge of parallel programming foundations, the classes and homeworks homework will place equal emphasis on both theory and practice. The programming component of the course will mostly use the  Habanero-Java Library (HJ-lib)  pedagogic extension to the Java language developed in the  Habanero Extreme Scale Software Research project  at Rice University.  The course will also introduce you to real-world parallel programming models including Java Concurrency, MapReduce, MPI, OpenCL and CUDA, MapReduce. An important goal is that, at the end of COMP 322, you should feel comfortable programming in any parallel language for which you are familiar with the underlying sequential language (Java or C). Any parallel programming primitives that you encounter in the future should be easily recognizable based on the fundamentals studied in COMP 322.

...

There are no required textbooks for the class. Instead, lecture handouts are provided for each module as follows.  You are expected to read the relevant sections in each lecture handout before coming to the lecture.  We will also provide a number of references in the slides and handouts.The links to the latest versions of the lecture handouts are included below:

  • Module 1 handout (Parallelism)
  • Module 2 handout  handout (Concurrency)There is no lecture handout for Module 3 (Distribution and Locality).  The instructors will refer you to optional resources to supplement the lecture slides and videos.

There are also a few optional textbooks that we will draw from during the course.  You are encouraged to get copies of any or all of these books.  They will serve as useful references both during and after this course:

 

Finally, here are some additional resources that may be helpful for you:

...

Lecture Schedule

 

 

Topic 1.1 Lecture, Topic 1.1 Demonstration Wed 09 2:  Computation Graphs, Ideal Parallelismlec3-slidesWed 16 Future Tasks, Functional Parallelism ("Back to the Future")Topic 2.1 Lecture, Topic 2.1 DemonstrationQuiz for Unit Fri 18  Memoization 2 2 Demonstration 23 Finish Accumulators3 3   Homework 1Jan 30 Java’s Fork/Join LibraryTopic 2.7 Lecture, Topic 2.8 Lecture,Quiz for Unit 2 01 Loop-Level Parallelism, Parallel Matrix Multiplication, Iteration Grouping (Chunking) Topic 3.1 Lecture , Topic 3.1 Demonstration , Topic 3.2 Lecture, Topic 3.2 Demonstration, Topic 3.3 Lecture , Topic 3.3 Demonstration   04  Barrier Synchronization 3 3 06 Parallelism in Java Streams, Parallel Prefix SumsTopic 3.7 Java Streams, Topic 3.7 Java Streams 11 Iterative Averaging Revisited, SPMD pattern 35 Lecture , Topic .5 Demonstration , Topic 3.6 , .6   15 Point-to-point Synchronization with Phasers 4.2 42 46lec25-slidesWed 20 Java Locks, Linearizability of Concurrent ObjectsTopic 7.3 Lecture, Topic 7.4 Lecture 

 

Mon Passing Interface (MPI), (start of Module 3)Topic 8 8 8.3 Lecture, Fri 12 GPU ComputingMonAlgorithms based on (Scan) operationsWed 17Lecture 38: Algorithms based on Parallel Prefix (Scan) operations, contd.Fri 19 18Homework 5

Week

Day

Date (20182022)

Lecture

Assigned Reading

Assigned Videos (see Canvas site for video links)

In-class Worksheets

Slides

Work Assigned

Work Due

1

Mon

Jan 07

Lecture 1: Task Creation and Termination (Async, Finish)

Module 1: Section 1.1

In-class Worksheets

Slides

Work Assigned

Work Due

Worksheet Solutions 

1

Mon

Jan 10

Lecture 1: Introduction

 

 

worksheet1lec1-slides  

 

 

WS1-solution 

 

Wed

Jan 12

Lecture 2:  Functional Programming

GList.java worksheet2lec02-slides

 

 

WS2-solutionworksheet1lec1-slides  
 FriJan 14Lecture Module 1: Sections 1.2, 1.3Topic 1.2 Lecture, Topic 1.2 Demonstration, Topic 1.3 Lecture, Topic 1.3 Demonstrationworksheet2lec2-slides

Homework 1

 

 FriJan 11Lecture 3: Abstract Performance Metrics, Multiprocessor SchedulingModule 1: Section 1.4Topic 1.4 Lecture, Topic 1.4 Demonstrationworksheet33: Higher order functions  worksheet3 lec3-slides   

 

 WS3-solution 

2

Mon

Jan 17

No class: MLK

        

2 

MonWed

Jan 1419

Lecture 4:    Parallel Speedup and Amdahl's LawModule 1: Section 1.5 Lazy Computation

LazyList.java

Lazy.java

 Topic 1.5 Lecture, Topic 1.5 Demonstrationworksheet4 lec4-slides  WS4-solution 

 

Fri

Jan

21

Lecture 5:

Java Streams

  Module 1: Section 2.1worksheet5lec5-slidesHomework 1 WS5-solution 
3MonJan 24

Lecture 6:

Map Reduce with Java Streams

Module 1: Section 2.24Topic 2.4 Lecture, Topic 2.worksheet6lec6-slides  

3

Mon

Jan 21

No lecture, School Holiday (Martin Luther King, Jr. Day)

 4 Demonstration  worksheet6lec6-slides 

 

  WS6-solution 

 

Wed

Jan

26

Lecture 7:

Futures

Module 1: Section 2.31Topic 2.1 Lecture , Topic 2.1 Demonstrationworksheet7lec7-slides

Homework 2

 

 WS7-solution 

 

Fri

Jan 2528

Lecture 8:Map Reduce  Computation Graphs, Ideal Parallelism

Module 1: Section 2.4Sections 1.2, 1.3Topic 1.2 Lecture, Topic 1.2 Demonstration, Topic 1.3 Topic 2.4 Lecture, Topic 21.4 3 Demonstrationworksheet8lec8-slides  WS8-solution Quiz for Unit 1

4

Mon

 

Jan 2831 Lecture 9: Data Races, Functional & Structural DeterminismAsync, Finish, Data-Driven Tasks 

Module 1:

Sections 2

Section 1.

5

1,

2

4.

6

5

 

Topic

2

1.

5

1 Lecture, Topic

2

1.

5

1 Demonstration, Topic

2

4.

6

5 Lecture, Topic

2

4.

6

5 Demonstration

   

worksheet9

lec9-slidesslides   WS9-solution 
 WedFeb 02Lecture 10: Module 1: Sections 2.7, 2.8 Event-based programming model

 

  worksheet10lec10-slides  WS10-solution 
 FriFeb 04Lecture 11: Module 1: Sections 3.1, 3.2, 3.3 GUI programming as an example of event-based,
futures/callbacks in GUI programming
  worksheet11lec11-slidesHomework 2Homework 1WS11-solution 
5

Mon

Feb

07

Lecture 12: Scheduling/executing computation graphs
Abstract performance metrics
Module 1: Section 31.4Topic 1.4 Lecture , Topic 1.4 Demonstrationworksheet12lec12-slides  WS12-solution 

 

Wed

Feb

09

Lecture 13:

Parallel Speedup, Critical Path, Amdahl's Law

Module 1: Section 1.5

Topic 1.5 Lecture , Topic 1.5

 

Demonstration

worksheet13lec13-slides

Homework 3 (includes 2 intermediate checkpoints)

Homework 2  WS13-solution 

 

-

Fri

Feb 0811

No class: Spring Recess

 

        
6

Mon

Feb

14

Lecture 14:

Accumulation and reduction. Finish accumulators

Module 1: Sections 3Section 2.5, 3.6Topic 2.3 Lecture   Topic 2.3 Demonstrationworksheet14lec14-slidesQuiz for Unit 3Quiz for Unit 2  WS14-solution 

 

Wed

Feb 16

Lecture 15: Recursive Task Parallelism  

  

 

Wed

Feb 13

Lecture 15:  Data-Driven Tasks

Module 1: Sections 4.5, 4.2, 4.3Topic 4.5 Lecture   Topic 4.5 Demonstration, Topic 4.3 Lecture,  Topic 4.3 Demonstrationworksheet15lec15-slides

 

 

 WS15-solution 
 FriFeb 18

Lecture 16:

Data Races, Functional & Structural Determinism

Module 1: Sections 42.5, 2.6Topic 2.5 Lecture ,  Topic 2.5 Demonstration,  Topic 2.6 Lecture,  Topic 2.6 Demonstrationworksheet16 lec16-slidesHomework 3Homework 2WS16-solution Quiz for Unit 3

7

Mon

Feb 1821

Lecture 17: Midterm Summary

  lec17-slides  

 

Wed

Feb 20

 

Midterm Review (interactive Q&A)

   lec17-slides    

 

FriWed

Feb 2223

Lecture 18: Limitations of Functional parallelism.
Abstract vs
. Real Performance. real performance. Cutoff Strategy

  worksheet18lec18lec18-slides  Homework 3, Checkpoint-1WS18-solution 

 

Fri

Feb 25 

Lecture 19: Fork/Join programming model. OS Threads. Scheduler Pattern 

 Topic 2.7 Lecture, Topic 2.7 Demonstration, Topic 2.8 Lecture, Topic 2.8 Demonstration, 

8

Mon

Feb 25

Lecture 19: Pipeline Parallelism, Signal Statement, Fuzzy Barriers

Module 1: Sections 4.4, 4.1Topic 4.4 Lecture ,   Topic 4.4 Demonstration, Topic 4.1 Lecture,  Topic 4.1 Demonstration,worksheet19lec19-slidesQuiz for Unit 4  WS19-solution 

8

MonWed

Feb 2728

Lecture 20: Critical sections, Isolated construct, Parallel Spanning Tree algorithm, Atomic variables (start of Module 2) Confinement & Monitor Pattern. Critical sections
Global lock

Module 2: Sections 5.1, 5.2, 5.3, 6 Topic 5.1 Lecture, Topic 5.1 Demonstration, Topic 5.1 2 Lecture, Topic 5.1 Demonstration, Topic 5.2 Lecture, Topic 5.2 Demonstration, Topic 5.3 Lecture, Topic 5.3 Demonstration, 2 Demonstration, Topic 5.6 Lecture, Topic 5.6 Demonstrationworksheet20lec20-slides        WS20-solution 

 

Wed

Mar 02

Lecture 21:  Atomic variables, Synchronized statements

Module 2: Sections 5.4, 7.2

Topic 5.4 Lecture, Topic 5.4 Demonstration, Topic 5.6 Lecture, Topic 5.6 Demonstrationworksheet20lec20-slides 

 

 

Fri

Mar 01

Lecture 21:  Read-Write Isolation, Review of Phasers

Module 2: Section 5.5Topic 5.5 Lecture, Topic 5.5 Demonstrationworksheet21 lec21-slidesQuiz for Unit 5

Quiz for Unit 4

7.2 Lectureworksheet21lec21-slides  WS21-solution 

 

Fri

Mar 04

Lecture 22: Parallel Spanning Tree, other graph algorithms 

  worksheet22lec22-slidesHomework 4

Homework 3

WS22-solution 

9

Mon

Mar 07

Lecture 23: Java Threads and Locks

Module 2: Sections 7.1, 7.3

Topic 7.1 Lecture, Topic 7.3 Lecture

worksheet23 lec23-slides  

 

WS23-solution 

 

Wed

Mar 09

Lecture 24: Java Locks - Soundness and progress guarantees  

Module 2: 7.5Topic 7.5 Lecture worksheet24 lec24

9

Mon

Mar 04

Lecture 22: Actors

Module 2: 6.1, 6.2Topic 6.1 Lecture ,   Topic 6.1 Demonstration ,   Topic 6.2 Lecture, Topic 6.2 Demonstrationworksheet22 lec22-slides 

 

WS24-solution 

 

WedFri

Mar 0611

Lecture 23:  Actors (contd)

Module 2: 6.3, 6.4, 6.5, 6.6Topic 6.3 Lecture, Topic 6.3 Demonstration, Topic 6.4 Lecture , Topic 6.4 Demonstration,   Topic 6.5 Lecture, Topic 6.5 Demonstration, Topic 6.6 Lecture, Topic 6.6 Demonstrationworksheet23 lec23-slides

Quiz for Unit 6

Homework 3, Checkpoint-2

 

Fri

Mar 08

Lecture 24: Java Threads, Java synchronized statement

Module 2: 7.1, 7.2Topic 7.1 Lecture, Topic 7.2 Lectureworksheet24lec24-slides  Quiz for Unit 5
 Lecture 25: Dining Philosophers Problem  Module 2: 7.6Topic 7.6 Lectureworksheet25lec25-slides 

 

WS25-solution 
 

Mon

Mar 14

No class: Spring Break

     

 

  
 WedMar 16No class: Spring Break  -

M-F

Mar 11 - Mar 15

Spring Break  

 

   

10 

MonFri

Mar 18

Lecture 25: Java synchronized statement (contd), wait/notify

Module 2: 7.2Topic 7.2 Lectureworksheet25

18

No class: Spring Break

     

 

  

10

Mon

Mar

21

Lecture 26:

Module 2: 7.3, 7.4

N-Body problem, applications and implementations 

  worksheet26lec26-slides

Homework 4

(includes one intermediate checkpoint)

  WS26-solution 

 

Homework 3 (all)

 

FriWed

Mar 2223

Lecture 27: Safety and Liveness Properties, Java Synchronizers, Dining Philosophers Problem Read-Write Locks, Linearizability of Concurrent Objects

Module 2: 7.53, 7.64Topic 7.5 3 Lecture, Topic 7.6 4 Lectureworksheet27lec27-slidesQuiz for Unit 7

Quiz for Unit 6

11

 

 WS27-solution 

 

Fri

Mar 25

Lecture 28: Message

-Passing programming model with Actors

Module 2: 6.1, 6.2Topic 6 .1 Lecture, Topic 6.1 Demonstration,   Topic 6.2 Lecture, Topic 6.2 Demonstrationworksheet28lec28-slides

 

 

 

WS28-solution 

11 

Mon

Wed

Mar 2728

Lecture 29:   Message Passing Interface (MPI, contd)

 Topic 8.4 Lecture, Topic 8.5 Lecture, Topic 8 Demonstration Videoworksheet29 lec29-slides

Quiz for Unit 8

 

 

Fri

Mar 29

Lecture 30: Distributed Map-Reduce using Hadoop and Spark frameworks

 Topic 9.1 Lecture (optional, overlaps with video 2.4), Topic 9.2 Lecture, Topic 9.3 Lectureworksheet30 lec30-slides  Quiz for Unit 7

Active Object Pattern. Combining Actors with task parallelism 

Module 2: 6.3, 6.4Topic 6.3 Lecture, Topic 6.3 Demonstration,   Topic 6.4 Lecture, Topic 6.4 Demonstrationworksheet29lec29-slides

 

 

WS29-solution 

 

Wed

Mar 30

Lecture 30: Task Affinity and locality. Memory hierarchy 

  worksheet30lec30-slides

 

 WS30-solution 

 

Fri

12

Mon

Apr 01

Lecture 31: TF-IDF and PageRank Algorithms with Map-Reduce

 

Data-Parallel Programming model. Loop-Level Parallelism, Loop Chunking

Module 1: Sections 3.1, 3.2, 3.3Topic 3.1 Lecture, Topic 3.1 Demonstration , Topic 3.2 Lecture,  Topic 3.2 Demonstration, Topic 3.3 Lecture,  Topic 3.3 Topic 9.4 Lecture, Topic 9.5 Lecture, Unit 9 Demonstrationworksheet31lec31-slidesHomework 5

Homework 4

WS31-solutionQuiz for Unit 9 

 12

WedMon

Apr 0304

Lecture 32:  Partitioned Global Address Space (PGAS) programming models Barrier Synchronization with PhasersModule 1: Section 3.4Topic 3.4 Lecture,  Topic 3.4 Demonstration worksheet32lec32-slides

 Homework 4 Checkpoint-1

 

WS32-solution 

 

FriWed

Apr 0506

Lecture 33: Combining Distribution and Multithreading

 

  Stencil computation. Point-to-point Synchronization with Phasers

Module 1: Section 4.2, 4.3

Topic 4.2 Lecture, Topic 4.2 Demonstration, Topic 4.3 Lecture,  Topic 4.3 Demonstration

Lectures 10.1 - 10.5, Unit 10 Demonstration (all videos optional – unit 10 has no quiz)

worksheet33lec33-slides

 

Quiz for Unit 8

 WS33-solution 

 

Fri

13

Mon

Apr 08

Lecture 34: Task Affinity with Places

 

 Fuzzy Barriers with Phasers

Module 1: Section 4.1Topic 4.1 Lecture, Topic 4.1 Demonstration worksheet34lec34-slides 

 

WS34-solution 

13

WedMon

Apr 1011

Lecture 35: Eureka-style Speculative Task Parallelism 

 

worksheet35lec35-slides

Homework 5

 

 

WS35-solution Homework 4 (all)
 WedApr 13Lecture 36: Scan Pattern. Parallel Prefix Sum 

 

worksheet36lec36-slides  Quiz for Unit 9

14

WS36-solution 
 FriApr 15Lecture 37: Parallel Prefix Sum applications  worksheet37lec37-slides    
14MonApr 18Lecture 38: Overview of other models and frameworks  worksheet38 lec38-slides    
 WedApr 20Lecture 39: Course Review (Lectures 19-38)   lec39-slides -    
  Fri Apr 22Lecture 40: Course Review (Lectures 19-38)     lec40-slides     Homework 5  

Lab Schedule

0  Setup1 10- - 7lab7  

Lab #

Date (20192022)

Topic

Handouts

Code Examples

1

Jan 10

Infrastructure

setup

lab0-handout

lab1-handout

 
2Jan

Async-Finish Parallel Programming with abstract metrics

lab1-handout
-

2

Jan 17

Futures

lab2-handout
-

3

Jan 24

Cutoff Strategy and Real World Performance

lab3-handout -

4

Jan 31

Java's ForkJoin Framework

lab4-handout -

-

Feb 7

 

No lab this week - Spring Recess -

5

Feb 14

DDFs

 

lab5-handout-
17Functional Programminglab2-handout 

3

Jan 24

Java Streams

lab3-handout
 
4Jan 31Futureslab4-handout 

5

Feb 07

Data-Driven Tasks

lab5-handout 
6

Feb 14

Async / Finish

lab6-handout 
-

Feb 21

No lab this week (Midterm)

  
7Feb 28Recursive Task Cutoff Strategylab7-handout 
8Mar 07Java Threadslab8-handout 

6

Feb 28

Loop-level Parallelism

lab6-handout 

-

Mar 14

No lab this week

(Spring Break)

  
9Mar 21

Isolated Statement and Atomic Variables

Concurrent Listslab9-handout 
810Mar 28Actorslab8lab10-handout 
911

Apr 04

Java Threads, Java Locks

Loop Parallelism

lab11lab9-handout 

10-

Apr 11

Apache Spark

lab10-handout  

11

Apr 18

Message Passing Interface (MPI)

lab11-handout  

 

 

Eureka-style Speculative Task ParallelismNo lab this week

  

-

 

Apr 18

No lab this week

  

Grading, Honor Code Policy, Processes and Procedures

Grading will be based on your performance on five homeworks four homework assignments (weighted 40% in all), two exams (weighted 40% in all), weekly lab exercises (weighted 10% in all), online quizzes (weighted 5% in all), and in-class worksheets (weighted 5% in all).

The purpose of the homeworks homework is to give you practice in solving problems that deepen your understanding of concepts introduced in class. Homeworks are Homework is due on the dates and times specified in the course schedule.  No late submissions (other than those using slip days mentioned below) will be accepted.

The slip day policy for COMP 322 is similar to that of COMP 321. All students will be given 3 slip days to use throughout the semester. When you use a slip day, you will receive up to 24 additional hours to complete the assignment. You may use these slip days in any way you see fit (3 days on one assignment, 1 day each on 3 assignments, etc.). Slip days will be automatically tracked through the Autograder, more details are available later in this document and in the Autograder user guideusing the README.md file. Other than slip days, no extensions will be given unless there are exceptional circumstances (such as severe sickness, not because you have too much other work). Such extensions must be requested and approved by the instructor (via e-mail, phone, or in person) before the due date for the assignment. Last minute requests are likely to be denied.be denied.

Labs must be submitted by the following Wednesday at 4:30pm.  Labs Labs must be checked off by a TA by the following Monday at 11:59pm.

Worksheets should be completed in class for full credit.  For partial credit, a worksheet can be turned in before the start of the class following the one in which the worksheet for distributed, by the deadline listed in Canvas so that solutions to the worksheets can be discussed in the next class.

You will be expected to follow the Honor Code in all homeworks and homework and exams.  The following policies will apply to different work products in the course:

  • In-class worksheets: You are free to discuss all aspects of in-class worksheets with your other classmates, the teaching assistants and the professor during the class. You can work in a group and write down the solution that you obtained as a group. If you work on the worksheet outside of class (e.g., due to an absence), then it must be entirely your individual effort, without discussion with any other students.  If you use any material from external sources, you must provide proper attribution.
  • Weekly lab assignments: You are free to discuss all aspects of lab assignments with your other classmates, the teaching assistants and the professor during the lab.  However, all code and reports that you submit are expected to be the result of your individual effort. If you work on the lab outside of class (e.g., due to an absence), then it must be entirely your individual effort, without discussion with any other students.  If you use any material from external sources, you must provide proper attribution (as shown here).
  • HomeworksHomework: All submitted homeworks are homework is expected to be the result of your individual effort. You are free to discuss course material and approaches to problems with your other classmates, the teaching assistants and the professor, but you should never misrepresent someone else’s work as your own. If you use any material from external sources, you must provide proper attribution.
  • Quizzes: Each online quiz will be an open-notes individual test.  The student may consult their course materials and notes when taking the quizzes, but may not consult any other external sources.
  • Exams: Each exam will be a closedopen-book, closedopen-notes, and closedopen-computer individual written test, which must be completed within a specified time limit.  No class notes or external materials may be consulted when taking the exams.

...