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ShyLU: Implementation of Thyra interface for FROSch

James Willenbring requested to merge roeverf:FROSch_Thyra into develop

Created by: roeverf



This implementation adds a Stratimikos/Thyra adapter for FROSch. FROSch can be enabled to the Stratimikos::DefaultLinearSolverBuilder (Stratimikos_FROSchXpetra.hpp). Routines to build the preconditioner (Thyra_FROSchXpetraFactory_def.hpp, Thyra_FROSchXpetraTwoLevelBlockPrec_def.hpp) were added. The preconditioner is passed on to Thyra as a FROSchLinOP (Thyra_FROSchLinearOp_def.hpp) derived from Thyra::LinearOpDefaultBase.

Routines to extract coordinates and a repeated map from the parameter list were added.

How Has This Been Tested?

All prior existing ShyLu-DD/FROSch test were passed. For the specific tests "Thyra_xxx" tests were added. Iteration counts are equal to the existing tests solving the same problem. All test were run on a Mac OS X, compiled with MPICH version 3.2.1.


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  • All new and existing tests passed.
  • No new compiler warnings were introduced.
  • These changes break backwards compatibility.

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