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COMP 322: Fundamentals of Parallel Programming (Spring

...

2022)

 

InstructorInstructors:

Mackale Joyner, DH 2063

Head TA: 

Co-Instructor:

 

Graduate TAs:

Zoran Budimlić, DH 3003

TAs: Adrienne 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:

Tory Songyang, William Su, Zishi Wang

 

 

Piazza site:

https:/

Piazza site:

https://piazza.com/configure-classesrice/spring2020spring2022/comp322 (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:

Sewell Hall 301Herzstein Amphitheater (online 1st 2 weeks)

Lecture times:

MWF 1:00pm - 1:50pm

Lab locations:

Sewell Hall 301Keck 100 (online 1st 2 weeks)

Lab times:

Thursday, 1Mon  3:00pm - 13:50pm (Austin, Claire)

Wed 4:00pm 30pm - 4:50pm

Course Syllabus

5:20pm (Hunena, Mantej, Yidi, Victor, Rose, Adrienne, Diep, Maki)

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. 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.

...

  • Module 1 handout (Parallelism)
  • Module 2 handout (Concurrency)

There

...

There are also a few optional 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

 

 

24 Future Tasks, Functional Parallelism ("Back to the Future")Topic 2.1 Lecture, Topic 2.1 Demonstration  29 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) Wed 06Topic 3.5 Lecture , Topic 3.5 Demonstration , Topic 3.6 Lecture,   Topic 3.6 Demonstration  Quiz for Unit 2 15 Point-to-point Synchronization with Phasers 42 42 43  Topic 4.3 Quiz for Unit 3Wed 20

Homework 4

(includes one intermediate checkpoint)

 

Homework 3 (all)11Mon Passing Interface (MPI), (start of Module 3)Topic 8 8 8.3 Lecture,Fri 29 Distributed Map-Reduce using Hadoop and Spark frameworksTopic 9.1 Lecture (optional, overlaps with video 2.4), Topic 9.2 Lecture, Topic 9.3 LectureQuiz for Unit 7 Fri 12 35: Eureka-style Speculative Task Parallelismlec35Quiz for Unit 914Mon 36Algorithms based on (Scan) operationsWed 17 37: Algorithms based on Parallel Prefix (Scan) operations, contd.Fri 19 38 20

Week

Day

Date (20202022)

Lecture

Assigned Reading

Assigned Videos (see Canvas site for video links)

In-class Worksheets

Slides

Work Assigned

Work Due

Worksheet Solutions 

1

Mon

Jan 1310

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

Module 1: Section 1.1

Introduction

 

 Topic 1.1 Lecture, Topic 1.1 Demonstration

worksheet1lec1-slidesslides  

 

 

WS1-solution 

 

Wed

Jan 1512

Lecture 2:  Computation Graphs, Ideal Parallelism

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

Functional Programming

GList.java worksheet2lec02-slides

 

 

WS2-solution  
 FriJan 1714Lecture 3: Abstract Performance Metrics, Multiprocessor SchedulingModule 1: Section 1.4Topic 1.4 Lecture, Topic 1.4 Demonstrationworksheet3 Higher order functions  worksheet3 lec3-slides   lec3-slides

 

 WS3-solution 

2

Mon

Jan 20No lecture, School Holiday (Martin Luther King, Jr. Day)17

No class: MLK

        

 

Wed

Jan 2219

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 lec4-slides solution 

 

 

Fri

Jan

21

Lecture 5:

Java Streams

  Module 1: Section 2.1worksheet5lec5-slidesHomework 1 WS5-solution 
3MonJan 2724

Lecture 6:  Memoization Map Reduce with Java Streams

Module 1: Section 2.24Topic 2.2 4 Lecture, Topic 2.2 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 3128

Lecture 8:Map Reduce  Computation Graphs, Ideal Parallelism

Module 1: Section Sections 1.2, 1.43Topic 1.2 .4 Lecture, Topic 1.2 Demonstration, Topic 1.3 Lecture, Topic 21.4 3 Demonstrationworksheet8lec8-slides  Quiz for Unit 1WS8-solution 

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: 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 1.4Topic 1.4 Lecture , Topic 1.4 Demonstrationworksheet12lec12Module 1: Sections 3.1, 3.2, 3.3

Topic 3.1 Lecture , Topic 3.1 Demonstration , Topic 3.2 Lecture, Topic 3.2 Demonstration, Topic 3.3 Lecture , Topic 3.3 Demonstration

worksheet11lec11-slides  WS12-solution 

5 

MonWed

Feb 0409

Lecture 12:  Barrier Synchronization 13: Parallel Speedup, Critical Path, Amdahl's Law

Module 1: Section 31.45

Topic

3

1.

4

5 Lecture , Topic

3

1.

4

5 Demonstration

worksheet12worksheet13lec12lec13-slides  WS13-solution 

 

Fri

Feb

11

Lecture 13: Parallelism in Java Streams, Parallel Prefix Sums

 Topic 3.7 Java Streams, Topic 3.7 Java Streams Demonstrationworksheet13lec13-slides

Homework 3 (includes 2 intermediate checkpoints)

Homework 2 

-

Fri

Feb 08

Spring Recess

       
No class: Spring Recess

 

        
6

Mon

Feb 14

Lecture 14: Accumulation and reduction. Finish accumulators

Module 1: Section 2.3Topic 2.3 Lecture   Topic 2.3 Demonstration

6

Mon

Feb 11

Lecture 14: Iterative Averaging Revisited, SPMD pattern

Module 1: Sections 3.5, 3.6worksheet14lec14-slidesQuiz for Unit 3  WS14-solution 

 

Wed

Feb 1316

Lecture 15:   Data-Driven Tasks

Module 1: Section 4.5

Recursive Task Parallelism  

  Topic 4.5 Lecture   Topic 4.5 Demonstrationworksheet15lec15-slides

 

 

 WS15-solution 
 FriFeb 18

Lecture 16:

Data Races, Functional & Structural Determinism

Module 1: Sections 42.5, 2, 4.36Topic 2.5 Lecture ,  Topic 2.5 Demonstration,  Topic 2.6 Lecture,  Topic 2.6 Demonstrationworksheet16 lec16-slidesHomework 3 Homework 2WS16-solution 

7

Mon

Feb 1821

Lecture 17: Midterm Summary Midterm Review

   lec17-slides    

 

Wed

Feb 20

Midterm Review (interactive Q&A)

       

23

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

 

Fri

Feb 22

Lecture 18: Abstract vs. Real Performance

  worksheet18lec18lec18-slides Homework 3, Checkpoint-1 

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

 

 
 WS18-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, worksheet19lec19

 

Wed

Feb 27

Lecture 20: Critical sections, Isolated construct, Parallel Spanning Tree algorithm, Atomic variables (start of Module 2)

Module 2: Sections 5.1, 5.2, 5.3, 5.4, 5.6

Topic 5.1 Lecture, Topic 5.1 Demonstration, Topic 5.2 Lecture, Topic 5.2 Demonstration, Topic 5.3 Lecture, Topic 5.3 Demonstration, Topic 5.4 Lecture, Topic 5.4 Demonstration, Topic 5.6 Lecture, Topic 5.6 Demonstration

worksheet20lec20-slides  WS19-solution 

 8

FriMon

Mar 01

Lecture 21:  Read-Write Isolation, Review of Phasers

Module 2: Section 5.5

Feb 28

Lecture 20: Confinement & Monitor Pattern. Critical sections
Global lock

Module 2: Sections 5.1, 5.2, 5.6 Topic 5.1 Lecture, Topic 5.1 Demonstration, Topic 5.2 Lecture, Topic 5.2 Demonstration, Topic 5.6 Topic 5.5 Lecture, Topic 5.5 6 Demonstrationworksheet21 worksheet20lec21lec20-slidesQuiz for Unit 5        WS20-solutionQuiz for Unit 4 

9 

MonWed

Mar 0402

Lecture 22: Actors21:  Atomic variables, Synchronized statements

Module 2:

6

Sections 5.

1

4,

6

7.2

Topic 65.1 4 Lecture,   Topic 65.1 4 Demonstration,   Topic 67.2 Lectureworksheet21lec21-slides  WS21-solution 

 

Fri

Mar 04

Lecture 22: Parallel Spanning Tree, other graph algorithms 

  , Topic 6.2 Demonstrationworksheet22lec22-slides Homework 4

 

 

Homework 3

WS22-solution 

 9

WedMon

Mar 0607

Lecture 23:   Actors (contd)Java Threads and Locks

Module 2: 6Sections 7.31, 6.4, 6.5, 6.67.3

Topic

6

7.

3

1 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 Demonstration
worksheet23 lec23-slides

Quiz for Unit 6

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-slides 

 

WS24-solutionHomework 3, Checkpoint-2 

 

Fri

Mar 0811Lecture 24: Java Threads, Java synchronized statement

 Lecture 25: Dining Philosophers Problem  Module 2: 7.1, 7.26Topic 7.1 Lecture, Topic 7.2 6 Lectureworksheet24worksheet25lec24lec25-slides 

 

Quiz for Unit 5
WS25-solution 
- 

M-FMon

Mar 14

No class: 11 - Mar 15 Spring Break

     

 

  
 WedMar 16No class: Spring Break    

10

Mon

Mar 18

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

Module 2: 7.2Topic 7.2 Lectureworksheet25lec25-slides

 

   

 

Fri

Mar

18

Lecture 26: Java Locks, Linearizability of Concurrent Objects

Module 2: 7.3, 7.4Topic 7.3 Lecture, Topic 7.4 Lectureworksheet26 lec26-slides

No class: Spring Break

     

 

  

10

Mon

Mar 21

Lecture 26: N-Body problem, applications and implementations

 

  worksheet26lec26-slides   WS26-solution 

 

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-slides

 

 WS27-solutionQuiz for Unit 7Quiz for Unit 6 

 

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

WedMon

Mar 2728

Lecture 29:   Message Passing Interface (MPI, contd)

 

Active Object Pattern. Combining Actors with task parallelism 

Module 2: 6.3, 6.4Topic 6.3 Lecture, Topic 6.3 Demonstration,   Topic 6Topic 8.4 Lecture, Topic 8.5 Lecture, Topic 8 Demonstration Video6.4 Demonstrationworksheet29lec29-slides

Quiz for Unit 8 

 

WS29-solution 

 

Wed

Mar

30

Lecture 30:

 

Task Affinity and locality. Memory hierarchy 

  worksheet30lec30-slides

 

 WS30-solution 

12 

MonFri

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-slidesQuiz for Unit 9Homework 5

Homework 4

WS31-solution  

 12

WedMon

Apr 03

Guest Lecture

 

04

Lecture 32: Barrier Synchronization with PhasersModule 1: Section 3.4Topic 3.4 Lecture,  Topic 3.4 Demonstrationworksheet32lec32-slides

 

 

 

Homework 4 Checkpoint-1WS32-solution 

 

FriWed

Apr 0506

Lecture 32: Partitioned Global Address Space (PGAS) programming models

 Lectures 10.1 - 10.5, Unit 10 Demonstration (all videos optional – unit 10 has no quiz)worksheet32lec32-slides

 

Quiz for Unit 8

 

33:  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

worksheet33lec33-slides

 

 WS33-solution 

 

Fri

13

Mon

Apr 08

Lecture 33: Combining Distribution and Multithreading

  worksheet33

34: Fuzzy Barriers with Phasers

Module 1: Section 4.1Topic 4.1 Lecture, Topic 4.1 Demonstrationworksheet34lec34lec33-slides 

 

WS34-solution 

13

WedMon

Apr 1011

Lecture 34: Task Affinity with Places35: Eureka-style Speculative Task Parallelism 

 

worksheet34worksheet35lec34lec35-slides

Homework 5

 

 

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

 

worksheet35worksheet36lec36-slides  WS36-solution 
 FriApr 15Lecture 37: Parallel Prefix Sum applications  worksheet36worksheet37lec36lec37-slides    
14MonApr 18Lecture 38: Overview of other models and frameworks  worksheet37 lec37lec38-slides    
 WedApr 20Lecture 39: Course Review (Lectures 19-38)   lec38lec39-slides 

Homework 5

 -  
  Fri Apr 22Lecture 40: Course Review (Lectures 19-38)     lec40-slides     Homework 5      

Lab Schedule

0  Setup1 16 

Lab #

Date (20202022)

Topic

Handouts

Examples

1

Jan 10

Infrastructure

setup

lab0-handout

lab1-handout

 
2Jan

Async-Finish Parallel Programming with abstract metrics

lab1-handout
-

2

Jan 23

Futures

lab2-handout
-

3

Jan 30

Cutoff Strategy and Real World Performance

lab3-handout -

4

 

Java's ForkJoin Framework

lab4-handout -

-

 

No lab this week - Spring Recess -

5

 

DDFs

 

lab5-handout-

6

 

Loop-level Parallelism

lab6-handout lab6-intro

7

 

Isolated Statement and Atomic Variables

lab7-handout -

-

 

No lab this week - Spring Break

  

8

 

Actors

lab8-handout-
9

 

Java Threads, Java Locks

lab9-handout -

10

 

Message Passing Interface (MPI)

lab10-handout -

11

 

Apache Spark

lab11-handout -

 

 

Eureka-style Speculative Task Parallelism

  
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 

-

Mar 14

No lab this week (Spring Break)

  
9Mar 21Concurrent Listslab9-handout 
10Mar 28Actorslab10-handout 
11

Apr 04

Loop Parallelism

lab11-handout 

-

Apr 11

No 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.

...