Data Reshaping Restrictions/2

• when reshaped array is passed as an actual argument to a subroutine:
  • if reshaped array is passed as a whole (I.e. call sub(A)), the formal parameter should match exactly the number of dimensions and their size
  • if only elements of reshaped array are passed ( I.e. call sub(A(0)) or call sub(A(I)), the called procedure treats the incoming parameter as non-distributed
  • for elements of reshaped array, the declared bounds on the formal parameter are required not to exceed the size of the distributed array portion passed in as actual argument. Example:
  • compiler performs consistency check on the legality of the reshaping:
    • -MP:dsm=ON (default)
    • -MP:check_reshape={ON|OFF} (default OFF) generation of run-time consistency checks
    • -MP:clone={ON|OFF} (default ON) automatically generate clones of procedures called with the reshaped parameters

Real*8 A(1000)

c$ distribute_reshape A(cyclic(5))

do I=1,1000,5

call mysub(A(I))

enddo

end

subroutine mysub(X)

real*8 X(5)

…

end

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