Target Parallel Worksharing-Loop Construct

| OPENMP API Specification: Version 5.1 November 2020

2.16.17 Target Parallel Worksharing-Loop Construct

Summary The target parallel worksharing-loop construct is a shortcut for specifying a target construct containing a parallel worksharing-loop construct and no other statements.

Syntax

The syntax of the target parallel worksharing-loop construct is as follows:

 
#pragma omp target parallel for [clause[ [,] clause] ... ] new-line 
    loop-nest

where loop-nest is a canonical loop nest and clause can be any of the clauses accepted by the target or parallel for directives, except for copyin, with identical meanings and restrictions.

The syntax of the target parallel worksharing-loop construct is as follows:

 
!$omp target parallel do [clause[ [,] clause] ... ] 
    loop-nest 
[!$omp end target parallel do]

where loop-nest is a canonical loop nest and clause can be any of the clauses accepted by the target or parallel do directives, except for copyin, with identical meanings and restrictions.

If an end target parallel do directive is not specified, an end target parallel do directive is assumed at the end of the loop-nest.

Description The semantics are identical to explicitly specifying a target directive immediately followed by a parallel worksharing-loop directive.

Restrictions The restrictions for the target and parallel worksharing-loop constructs apply except for the following explicit modifications:

If any if clause on the directive includes a directive-name-modifier then all if clauses on the directive must include a directive-name-modifier.
At most one if clause without a directive-name-modifier can appear on the directive.
At most one if clause with the parallel directive-name-modifier can appear on the directive.
At most one if clause with the target directive-name-modifier can appear on the directive.

Cross References

Canonical loop nest form, see Section 2.11.1.
target construct, see Section 2.14.5.
Parallel Worksharing-Loop construct, see Section 2.16.1.
if clause, see Section 2.18.
Data attribute clauses, see Section 2.21.4.
copyin clause, see Section 2.21.6.1.

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