task_reduction Clause

| OPENMP API Specification: "Version 5.2 -- GIT rev 95b2e3a44"

5.5.9 task_reduction Clause


Name: task_reduction	Properties: data-environment attribute, data-sharing attribute, privatization, reduction scoping

Arguments


Name	Type	Properties

list	list of variable list item type	default

Modiﬁers


Name	Modiﬁes	Type	Properties

reduction-identiﬁer	list	An OpenMP reduction identiﬁer	required, ultimate

Directives

taskgroup

Semantics

The task_reduction clause is a reduction scoping clause, as described in Section 5.5.6, that speciﬁes a reduction among tasks. For each list item, the number of copies is unspeciﬁed. Any copies associated with the reduction are initialized before they are accessed by the tasks that participate in the reduction. After the end of the region, the original list item contains the result of the reduction.

Restrictions

Restrictions to the task_reduction clause are as follows:

All restrictions common to all reduction clauses, as listed in Section 5.5.5, apply to this clause.

Cross References

taskgroup directive, see Section 15.4

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