Procedure Calls in INDEPENDENT Loops

• Call non - pure subprograms from parallel loops

  • When all communication can be generated at caller sites
  • INTENT attribute is extended so that array access region can be specified

interface block

subroutine SUB(A,K)

real A(100,100)

intent (inout) :: A(1:100,K)

end subroutine

end interface block

do i=1,100

call SUB(A,i)

enddo

subroutine sub(A,k)

real A(100,100)

do i=1,100

A(i,k)=A(i,k)+1.0

enddo

Call

k

• Existing F77 routines can be used in the parallelization with HPF

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