OpenMP in Small Bites/Tasking

Quiz

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1. What is the default data scoping of a variable in a task scope? Hint: Assume that the variable is declared before the task region, but in the same function.

	Always firstprivate.
	firstprivate unless shared in the enclosing context.
	shared unless firstprivate in the enclosing context.

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2. Which tasks are synchronized with by a taskyield construct?

	All tasks of the same thread team.
	All desendant tasks.
	The direct child tasks.

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3. Why can it be benficial for the performance to use cut-off strategies for task-based OpenMP programs?

	It can avoid overhead caused by too fine-grained tasks.
	It can synchonize tasks faster.
	It can accelerate task stealing be enforcing one task queue per thread.