Basic HTML version of Foils prepared
August 7 98
Foil 25 Examples of Incorrect
INDEPENDENT Assertions
From
DoD HPF Training -- 3. Parallel Constructs in HPF DoD Training and Others --
1995-98
.
by
Chuck Koelbel -- Rice University
INDEPENDENT does not handle reductions
!HPF$ INDEPENDENT
DO i = 1, n
x = x + a(i)*a(i)
END DO
INDEPENDENT does not know about higher-level correctness
DO WHILE (err > err_tol)
!HPF$ INDEPENDENT
DO i = 2, n-1
b(i) = a(i)
a(i) = 0.5 * (a(i-1) + a(i+1))
b(i) = ABS(b(i) - a(i))
END DO
err = MAXVAL(b(2:n-1))
END DO
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