Link to this document's Jupyter Notebook

In order to successfully complete this assignment you must do the required reading, watch the provided videos and complete all instructions. The embedded survey form must be entirely filled out and submitted on or before 11:59pm on Sunday February 21. Students must come to class the next day prepared to discuss the material covered in this assignment.

Pre-Class Assignment: Into the OpenMP Weeds

Goals for today's pre-class assignment

  1. Getting into the weeds
  2. Locks
  3. RunTime Libraries
  4. Assignment wrap up

1. Getting into the weeds

✅ DO THIS: Watch the following video on YouTube which is a review of the "Pi" program and it's summary on critical sections Introduction to OpenMP: 11 part 1 Module 6

✅ QUESTION: Why is there always an implied barrier at the end of a parrallel region?

Put your answer to the above question here.

✅ QUESTION: What is the single section used.

Put your answer to the above question here.

2. Locks

✅ DO THIS: Watch the following video on YouTube which is a review of the "Pi" program and it's summary on critical sections Introduction to OpenMP: 11 part 2 Module 6

Here is the code from the video for your review.

#pragma omp parallel for
for(int i=0;INBUCKETS;i++){
    omp_init_lock(&hist_locks[i]); 
    hist[i] = 0;
}
#pragma omp parallel for
for(int i=0;INVALS;i++){
    ival = (int) sample(arr[i]);
    omp_set_lock(&hist_locks[ival]);
        hist[ival]++;
    omp_unset_lock(&hist_locks[ival]);
}
for(int i=0;i<NBUCKETS;i++)
    omp_destroy_lock(&hist_locks[i]);

3. RunTime Libraries

✅ DO THIS: Watch the following video on YouTube which is a review of the "Pi" program and it's summary on critical sections Introduction to OpenMP: 11 part 3 Module 6

4. Assignment wrap up

Please fill out the form that appears when you run the code below. You must completely fill this out in order to receive credits for the assignment!

Direct Link to Google Form

If you have trouble with the embedded form, please make sure you log on with your MSU google account at googleapps.msu.edu and then click on the direct link above.

✅ Assignment-Specific QUESTION: Why is there always an implied barrier at the end of a parrallel region?

Put your answer to the above question here

✅ QUESTION: Summarize what you did in this assignment.

Put your answer to the above question here

✅ QUESTION: What questions do you have, if any, about any of the topics discussed in this assignment after working through the jupyter notebook?

Put your answer to the above question here

✅ QUESTION: How well do you feel this assignment helped you to achieve a better understanding of the above mentioned topic(s)?

Put your answer to the above question here

✅ QUESTION: What was the most challenging part of this assignment for you?

Put your answer to the above question here

✅ QUESTION: What was the least challenging part of this assignment for you?

Put your answer to the above question here

✅ QUESTION: What kind of additional questions or support, if any, do you feel you need to have a better understanding of the content in this assignment?

Put your answer to the above question here

✅ QUESTION: Do you have any further questions or comments about this material, or anything else that's going on in class?

Put your answer to the above question here

✅ QUESTION: Approximately how long did this pre-class assignment take?

Put your answer to the above question here

Congratulations, we're done!

To get credit for this assignment you must fill out and submit the above survey from on or before the assignment due date.

Course Resources:

Written by Dr. Dirk Colbry, Michigan State University Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.