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Tpetra map get min global index

James Willenbring requested to merge Tpetra_map_getMinGlobalIndex into develop

Created by: lucbv

Change in the behavior of Tpetra map when a process holds no GID. The goal is to provide more logical returns from getMinAllGlobalIndex()

@trilinos/tpetra

Description

Change minMyGID_ value to Teuchos::OrdinalTraits<GlobalOrdinal>::max() when a rank holds no GIDs.

Motivation and Context

The current behavior is not logical and block repartitioning algorithm for Xpetra::BlockedMatrix

Related Issues

Checklist

  • My commit messages mention the appropriate GitHub issue numbers.
  • My code follows the code style of the affected package(s).
  • My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • I have read the code contribution guidelines for this project.
  • I have added tests to cover my changes.
  • All new and existing tests passed.
  • No new compiler warnings were introduced.
  • These changes break backwards compatibility.

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