[WIP] Ifpack2: Compute residual update #13610
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@trilinos/ifpack2
Motivation
This is a work in progress to test changes to the compute residual kernel used by the TriDiag Solver.
@brian-kelley @vbrunini @tcfisher This is a draft of the changes we discussed. It should give a small performance uplift, though I think there is room for further improvement.
Using the Ifpack2 block tridiag benchmark:
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