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COMP 322: Fundamentals of Parallel Programming (Spring

...

2022)

 

InstructorInstructors:

Mackale Joyner, DH 2071

Head TA:Abbey Baker

Co-Instructor:

2063

Zoran Budimlić, DH 30813003

Graduate TAs:Jonathan Sharman, Srdjan MilakovicAdrienne 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:

Ashok Sankaran, Austin Bae, Avery Whitaker, Aydin Zanager, Eduard Danalache, Frank Chen, Hamza Nauman, Harrison Brown, Jahid Adam, Jeemin Sim, Kitty Cai, Madison Lewis, Ryan Han, Teju Manchenella, Victor Gonzalez, Victoria Nazari

 

 

Piazza site:

https:

Piazza site:

https://piazza.com/rice/classspring2022/j3w0pi8pl9s8scomp322 (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-Cross-listing:

ELEC 323

Lecture location:

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

Lecture times:

MWF 1:00pm - 1:50pm

Lab locations:

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

Lab times:

Thursday, 4Mon  3:00pm - 43:50pm

Course Syllabus

(Austin, Claire)

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

Course Syllabus

A summary PDF file containing 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 . 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 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

 

Lecture Schedule

 

 

19 Future Tasks, Functional Parallelism ("Back to the Future") 24 Finish Accumulators3 3   Homework 1Jan 31 Java’s Fork/Join LibraryTopic 2.7 Lecture, Topic 2.8 Lecture, 02 Loop-Level Parallelism, Parallel Matrix Multiplication, Iteration Grouping (Chunking)   05  Barrier Synchronization 3 3 07 Parallelism in Java Streams, Parallel Prefix Sums Homework 3 (includes two intermediate checkpoints)   12 Iterative Averaging Revisited, SPMD pattern 3.5 Lecture , Topic 3.5 Demonstration , Topic 3.6 Lecture,   Topic 3.6 Demonstration   4 4 42 4. Demonstration, Topic 4.3 Lecture,  Topic 4.3   Exam 1 held during lab time (7:00pm - 10:00pm), scope of exam limited to lectures 1-16 4, 6.5, 6.6Mon 19Wed 21Mar 26 Passing Interface (MPI), (start of Module 3)Topic 8.1 Lecture, Topic 8 8.3 Lecture,Fri Distributed Map-Reduce using Hadoop and Spark frameworksFriAlgorithms based on (Scan) operationsApr 16Algorithms based on (Scan) operations, contd.Wed GPU ComputingFri 18

Week

Day

Date (2022

Week

Day

Date (2018)

Lecture

Assigned Reading

Assigned Videos (see Canvas site for video links)

In-class Worksheets

Slides

Work Assigned

Work Due

Worksheet Solutions 

1

Mon

Jan 0810

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 1012

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

Functional Programming

GList.java worksheet2lec02-slides

 

 

WS2-solutionHomework 1 
 FriJan 1214Lecture 3: Abstract Performance Metrics, Multiprocessor SchedulingModule 1: Section 1.4Topic 1.4 Lecture, Topic 1.4 Demonstrationworksheet3lec3-slides Higher order functions  worksheet3 lec3-slides   

 

 WS3-solution  

2

Mon

Jan 15No lecture, School Holiday (Martin Luther King, Jr. Day)17

No class: MLK

        

 

Wed

Jan 1719

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 Demonstrationworksheet4lec4-slides  WS4-solutionQuiz for Unit 1 

 

Fri

Jan

21

Lecture 5:

Java Streams

  Module 1: Section 2.1Topic 2.1 Lecture, Topic 2.1 Demonstrationworksheet5lec5-slidesHomework 1 WS5-solution 
3MonJan 2224

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 2628

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  WS8-solution Quiz for Unit 1

4

Mon

 

Jan 2931 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-solutionModule 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 
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  WS13-solution 

 

Homework 2

-

Fri

Feb 0911

No class: Spring Recess

 

        Quiz for Unit 2
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-slides  WS14-solution 

 

Wed

Feb 1416

Lecture 15:   Data-Driven Tasks, Point-to-Point Synchronization with Phasers Recursive Task Parallelism  

  worksheet15lec15-slides

 

 

 WS15-solution 
 FriFeb 18

Lecture 16: Data Races, Functional & Structural Determinism

Module 1: Sections 42.5, 4. 2, 4.36Topic 2.5 Lecture ,  Topic 2.5 Demonstration,  Topic 2.6 Lecture,  Topic 2.6 Demonstrationworksheet15 worksheet16 lec15lec16-slidesHomework 3Homework 2WS16-solution 

 7

FriMon

Feb 1621

Lecture 1617: Phasers  Midterm Review

Module 1: Sections 4.2Topic 4.2 Lecture ,   Topic 4.2 Demonstrationworksheet16    lec17lec16-slides Quiz for Unit 3   

 

Wed

Feb 23

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

7

Mon

Feb 19

Lecture 17: Midterm Summary

   worksheet18lec17lec18-slides  

 

Wed

Feb 21

Midterm Review (interactive Q&A)

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-slides  

Fri

Feb 23

Lecture 18: Abstract vs. Real Performance

  worksheet18 lec18-slides  Homework 3, Checkpoint-1WS19-solution 

8

Mon

Feb 2628

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,worksheet19

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 Lecture, Topic 5.6 Demonstrationworksheet20lec20-slides      lec19-slides   WS20-solution 

 

WedFeb

28Mar 02

Lecture 20: Critical sections, Isolated construct, Parallel Spanning Tree algorithm, Atomic variables (start of Module 2)21:  Atomic variables, Synchronized statements

Module 2: Sections 5.

1

4,

5

7.2

, 5.3, 5.4, 5.6

Topic 5.1 4 Lecture, Topic 5.1 4 Demonstration, Topic 57.2 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 Demonstrationworksheet20 lec20-slides  

 

 

Fri

Mar 02

Lecture 21:  Read-Write Isolation, Review of Phasers

Module 2: Section 5.5Topic 5.5 Lecture, Topic 5.5 Demonstrationworksheet21 lec21-slides  

Quiz for Unit 4

worksheet21lec21-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 05

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 0711Lecture 23:  Actors (contd)

 Lecture 25: Dining Philosophers Problem  Module 2: 67.3, 6Topic 7.Topic 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

 

Homework 3, Checkpoint-2

 

Fri

Mar 09

Lecture 24: Java Threads, Java synchronized statement

Module 2: 7.1, 7.2Topic 7.1 Lecture, Topic 7.2 Lectureworksheet24 lec24-slides   Quiz for Unit 5
6 Lectureworksheet25lec25-slides 

 

WS25-solution 
 

Mon

Mar 14

No class:

-

M-F

Mar 12 - Mar 16

Spring Break

     

 

10

  
 WedMar 16

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

Module 2: 7.2Topic 7.2 Lectureworksheet25 No class: Spring Break    

 

lec25-slides

   

 

Fri

Mar

18

No class: Spring Break

     

 

  

10

Mon

Mar 21

Lecture 26: N-Body problem, applications and implementations 

  worksheet26lec26-slides   WS26-solution 

 

Wed

Mar 23

Lecture 27: Read-Write Locks, Linearizability of Concurrent Objects

Lecture 26: Java Locks, Linearizability of Concurrent Objects

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

 

Homework 4

(includes one intermediate checkpoint)

 

Homework 3 (all)

 

Fri

Mar 23

Lecture 27: Safety and Liveness Properties, Java Synchronizers, Dining Philosophers Problem

Module 2: 7.53, 7.64Topic 7.5 3 Lecture, Topic 7.6 4 Lectureworksheet27lec27-slides

 

Quiz for Unit 6

11

Mon

 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 28

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 6.4 Lecture, Topic 6.4 DemonstrationTopic 8.4 Lecture, Topic 8.5 Lecture, Topic 8 Demonstration Videoworksheet29lec29-slides

 

 

WS29-solution 

 

Wed

Mar 30

Lecture 30:

Task Affinity and locality. Memory hierarchy 

  worksheet30 Topic 9.1 Lecture (optional, overlaps with video 2.4), Topic 9.2 Lecture, Topic 9.3 Lectureworksheet30 lec30-slides

 

 Quiz for Unit 7

12

Mon

WS30-solution 

 

Fri

Apr 01Apr 02

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-solution  

 12

WedMon

Apr 04

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 06

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

Apr 08

13

Mon

Apr 09

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

MonWed

Apr 11

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

Mon

 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 

Homework 5

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

Lab Schedule

0  Setup1 11lab7-handout, lab7-slides 08Actors - 29 10 05lab1012 19lab12-handout

Lab #

Date (20172022)

Topic

Handouts

Code Examples

1

Jan 10

Infrastructure

setup

lab0-handout

lab1-handout

 
2Jan

Async-Finish Parallel Programming with abstract metrics

lab1-handout, lab1-slides
lab_1.zip

2

Jan 18

Futures and HJ-Viz 

lab2-handout, lab2-slides
lab_2.zip

3

Jan 25

Cutoff Strategy and Real World Performance

lab3-handout, lab3-slides lab_3.zip

4

Feb 01

Java's ForkJoin Framework

lab4-handout, lab4-slides   lab_4.zip

5

Feb 08

Loop-level Parallelism

lab5-handout, lab5-slides lab_5.zip

6

Feb 15

Phasers

lab6-handout   lab_6.zip

-

Feb 22

No lab this week — Exam 1

--
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

7

Mar 01

Isolated Statement and Atomic Variables

 
8Mar 07Java Threadslab8-handout 

-

Mar 1514

No lab this week (Spring Break)

  
9Mar 2221Concurrent ListsJava Threads, Java Lockslab9-handout 
10Mar 28Actorslab10-handout

No lab this week — Willy Week!

 
11

Apr

04

Loop Parallelism

lab11

Message Passing Interface (MPI) 

-handout 

11-

Apr 12

Apache Spark

11

No lab this week

 lab11-handout  

-

Apr

Eureka-style Speculative Task Parallelism

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.

Labs must be submitted by the following Wednesday at 4:30pm.  Labs must be checked off by a TA prior to the start of the lab the following week..

Worksheets should be completed by the deadline listed in Canvas 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, 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.

 Graded homeworks will be returned to you via email, and exams as marked-up hardcopies. If you believe we have made an error in grading your homework or exam, please bring the matter to our

attention within 7 daysFor grade disputes, please send an email to the course instructors within 7 days of receiving your grade. The email subject should include COMP 322 and the assignment. Please provide enough information in the email so that the instructor does not need to perform a checkout of your code.

Accommodations for Students with Special Needs

...