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2.6.6 ordered Construct

The structured block following an ordered directive is executed in the order in which iterations would be executed in a sequential loop. The syntax of the ordered directive is as follows:

#pragma omp ordered new-line
   structured-block

An ordered directive must be within the dynamic extent of a for or parallel for construct. The for or parallel for directive to which the ordered construct binds must have an ordered clause specified as described in Section 2.4.1 on page 11. In the execution of a for or parallel for construct with an ordered clause, ordered constructs are executed strictly in the order in which they would be executed in a sequential execution of the loop.

Restrictions to the ordered directive are as follows:

  • An iteration of a loop with a for construct must not execute the same ordered directive more than once, and it must not execute more than one ordered directive.

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