[petsc-users] Calculating the PETSc index of a DMComposite vector

[Anush Krishnan]

Hi all,

I have two 2D distributed arrays U and V, and a vector created from the
DMComposite of both. If I know just the Natural Ordering index of an
element of U  or V, can I calculate the PETSc Ordering index of that
element in the composite vector?

Thank you,
Anush
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