Difference between revisions of "OpenMP in Small Bites/Worksharing"
OpenMP in Small Bites/Worksharing
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| − | |title = 3. Can the following code snipped be parallelized with the OpenMP for-construct with out breaking the semantic? Justify your answer. | + | |title = 3. Can the following code snipped be parallelized with the OpenMP for-construct with out breaking the semantic? Justify your answer. <br> |
| + | <code> int i, int s = 0; <br /> for (i = 1; i < 100; i++){ </code> <div style="margin-left: 1em;"><code> s = a[i-1] + a[i]; </code></div> <code>} </code> <br /> | ||
}} | }} | ||
<quiz display=simple> | <quiz display=simple> | ||
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+ Click and submit to see the answer | + Click and submit to see the answer | ||
| − | || | + | || {{Note|'''No. Due to the dependency between the loop iterations this would cause a data race'''}} |
</quiz> | </quiz> | ||
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Revision as of 17:38, 2 November 2020
| HPC.NRW | |
|---|---|
 | |
| Other HPC Courses | |
| 1. | Gprof Tutorial |
| 2. | Introduction to Linux in HPC |
| OpenMP in Small Bites | |
| 1. | Overview |
| 2. | Worksharing |
| 3. | Data Scoping |
| 4. | Non-Uniform Memory Access
|
Video
Quiz
1. What is most commonly used worksharing construct in OpenMP to distribute work among loop interations?
2. Give an example for a parallel vector addition using OpenMP worksharing!
3. Can the following code snipped be parallelized with the OpenMP for-construct with out breaking the semantic? Justify your answer.
int i, int s = 0;
for (i = 1; i < 100; i++){ s = a[i-1] + a[i]; }