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Parallel tpetra scatter gather

James Willenbring requested to merge parallel_tpetra_scatter_gather into develop

Created by: bathmatt

I sped up several panzer evaluators gather/scatter and vector to scalar, by using parallel fors.

@trilinos/panzer

Suggesting either @jmgate or @rppawlo

Description

Motivation and Context

This gained a factor of 5 in runtime for the EMPIRE application

How Has This Been Tested?

Using gcc/opt/debug with openMP I got 100% tests passed, 0 tests failed out of 114

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.

Additional Information

Merge request reports