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Tpetra: Fix #2968

James Willenbring requested to merge Fix-2968 into develop

Created by: mhoemmen

Add Inf, NaN, zero diagonal entry, and zero row sum (I'm using the AztecOO term; this is actually a one-norm, that is, a sum of absolute values) detection to Tpetra::computeRowAndColumnNorms. This imitates and improves upon AztecOO's zero row sum detection.

@trilinos/ifpack2 @trilinos/tpetra @vbrunini

Motivation and Context

Aria and Fuego want this.

Related Issues

How Has This Been Tested?

Locally. I added tests for all the different error conditions that the routine checks.


  • My commit messages mention the appropriate GitHub issue numbers.
  • My code follows the code style of the affected package(s).
  • 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.

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