/usr/include/trilinos/Piro_MatrixFreeDecorator_Def.hpp is in libtrilinos-piro-dev 12.10.1-3.
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// ************************************************************************
//
// Piro: Strategy package for embedded analysis capabilitites
// Copyright (2010) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
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// National Laboratories.
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// ************************************************************************
// @HEADER
#include "Piro_MatrixFreeDecorator.hpp"
#include "Piro_MatrixFreeLinearOp.hpp"
#include "Thyra_VectorStdOps.hpp"
template <typename Scalar>
Piro::MatrixFreeDecorator<Scalar>::MatrixFreeDecorator(
Teuchos::RCP<Thyra::ModelEvaluator<Scalar> > model,
double lambda_) :
Thyra::ModelEvaluatorDelegatorBase<Scalar>(model),
lambda(lambda_)
{
}
template <typename Scalar>
Teuchos::RCP<Thyra::LinearOpBase<Scalar> >
Piro::MatrixFreeDecorator<Scalar>::create_W_op() const
{
return Teuchos::rcp(new MatrixFreeLinearOp<Scalar>(this->getUnderlyingModel(), lambda));
}
template <typename Scalar>
Thyra::ModelEvaluatorBase::OutArgs<Scalar>
Piro::MatrixFreeDecorator<Scalar>::createOutArgsImpl() const
{
const Thyra::ModelEvaluatorBase::OutArgs<Scalar> modelOutArgs =
this->getUnderlyingModel()->createOutArgs();
Thyra::ModelEvaluatorBase::OutArgsSetup<Scalar> result = modelOutArgs;
result.setModelEvalDescription(this->description());
const bool modelSupportsResidual = modelOutArgs.supports(Thyra::ModelEvaluatorBase::OUT_ARG_f);
result.setSupports(Thyra::ModelEvaluatorBase::OUT_ARG_W_op, modelSupportsResidual);
return result;
}
template <typename Scalar>
void
Piro::MatrixFreeDecorator<Scalar>::evalModelImpl(
const Thyra::ModelEvaluatorBase::InArgs<Scalar> &inArgs,
const Thyra::ModelEvaluatorBase::OutArgs<Scalar> &outArgs) const
{
using Teuchos::RCP;
// Forward all input arguments
Thyra::ModelEvaluatorBase::InArgs<Scalar> modelInArgs =
this->getUnderlyingModel()->createInArgs();
modelInArgs.setArgs(inArgs, /*ignoreUnsupported =*/ false);
// Forward all supported output arguments, except Jacobian operator
Thyra::ModelEvaluatorBase::OutArgs<Scalar> modelOutArgs =
this->getUnderlyingModel()->createOutArgs();
modelOutArgs.setArgs(outArgs, /*ignoreUnsupported =*/ true);
if (modelOutArgs.supports(Thyra::ModelEvaluatorBase::OUT_ARG_W_op)) {
modelOutArgs.set_W_op(Teuchos::null);
}
const bool computeResidual = Teuchos::nonnull(outArgs.get_f());
const bool computeJacobian = Teuchos::nonnull(outArgs.get_W_op());
if (computeJacobian && !computeResidual) {
// Residual required to compute Jacobian
// Must be computed even if not requested by user
modelOutArgs.set_f(Thyra::createMember(this->getUnderlyingModel()->get_f_space()));
}
this->getUnderlyingModel()->evalModel(inArgs, modelOutArgs);
if (computeJacobian) {
const RCP<Thyra::LinearOpBase<Scalar> > W_out = outArgs.get_W_op();
const RCP<MatrixFreeLinearOp<Scalar> > W_actual =
Teuchos::rcp_dynamic_cast<MatrixFreeLinearOp<Scalar> >(W_out);
TEUCHOS_TEST_FOR_EXCEPT(Teuchos::is_null(W_actual));
RCP<const Thyra::VectorBase<Scalar> > f_base;
{
const RCP<const Thyra::VectorBase<Scalar> > f_out = modelOutArgs.get_f();
if (computeResidual) {
// Make a deep copy to assert exclusive ownership of *f_out
// to avoid aliasing or dangling pointer
f_base = f_out->clone_v();
} else {
// A shallow copy is safe since we created and therefore are the exclusive owner of *f_out
f_base = f_out;
}
}
// Deep copy of the input parameters since we are not guaranteed to own the referenced objects
Thyra::ModelEvaluatorBase::InArgs<Scalar> clonedModelInArgs =
this->getUnderlyingModel()->createInArgs();
clonedModelInArgs.setArgs(modelInArgs, /*ignoreUnsupported =*/ false, /*cloneObjects =*/ true);
// Pass references to operator for shallow copies
W_actual->setBase(clonedModelInArgs, f_base);
}
}
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