This is a rule oft-used in HPF Compilation Systems. It says that:
the processor that owns the left-hand side element will perform the calculation.
For example, in
DO i = 1,n
a(i-1) = b(i*6)/c(i+j)-a(i**i)
END DO
the processor that owns a(i-1) will perform the assignment. The components of the RHS expression may have to be communicated to this processor before the assignment is made.
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