The INDEPENDENT Directive

The INDEPENDENT directive:

• can be applied to DO loops and FORALL assignments.
• asserts that no iteration affects any other iteration either directly or indirectly.

For DO-loops INDEPENDENT means the iterations or assignments can be performed in any order:

 !HPF$ INDEPENDENT
 DO i = 1,n
   x(i) = i**2
 END DO

For FORALL statements INDEPENDENT means the whole RHS does not have to be evaluated before assignment to the LHS can begin,

 !HPF$ INDEPENDENT
 FORALL (i = 1:n) x(i) = i**2

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