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There is a restriction for loops 2.5.1 (p42, l3-4) "The loops must form a rectangular iteration space and the bounds and stride of each loop must be invariant in every loop". But what is "rectangular iteration space"? Do the following loops form a non-rectangular iteration space?
- Code: Select all
#pragma omp for collapse(3)
for (i=1; i<10; i++)
for (j=i; j<10; j++)
for (k=j; k<10; k++)
No, it is not rectangular. We're working on cleaning up the wording. The invariant requirement is supposed to disallow this case.
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- Location: OpenMP ARB
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