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Issue created by James Willenbring@jmwilleOwner2 of 2 checklist items completed2/2 checklist items

MueLu: update LTG Matrix kernels in TpetraExt

Created by: jjellio

Update the TpetraExt (LTG) kernels to use improved copies and memory management.

These changes were not propagated from the work done last fall. This issue mirrors the PR being submitted.

@trilinos/muelu @csiefer2

Expectations

  • The kernels will use bulk threaded copies for copy-out
  • The kernels will compute the rowptr in-place (reduced memory overhead)