Lecture 12: OpenMP Synchronization and Reduction

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Private data and copy-in / copy-out

Lastprivate example

Quiz: change the chunk size to three

A loop-carried dependency is not removed by omp for

Barriers and nowait

Critical regions, atomic updates, and reductions

Critical

Atomic

Reduction

Worked reductions

Numerical integration

Find the one non-repeating integer

Quiz: reduction over sections

Histogram with a custom vector reduction