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Teko_ProbingPreconditionerFactory.cpp
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00006 //      Teko: A package for block and physics based preconditioning
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00045 */
00046 
00047 #include "Teko_ProbingPreconditionerFactory.hpp"
00048 
00049 #ifdef Teko_ENABLE_Isorropia
00050 
00051 #include "Teko_EpetraOperatorWrapper.hpp"
00052 
00053 #include "Thyra_get_Epetra_Operator.hpp"
00054 #include "Thyra_EpetraLinearOp.hpp"
00055 #include "Epetra_CrsMatrix.h"
00056 
00057 using Teuchos::rcp;
00058 using Teuchos::rcp_dynamic_cast;
00059 using Teuchos::rcpFromRef;
00060 using Teuchos::RCP;
00061 
00062 namespace Teko {
00063 
00064 /*****************************************************/
00065 
00066 
00067 ProbingPreconditionerFactory::ProbingPreconditionerFactory()
00068 {
00069    prober = rcp(new Isorropia::Epetra::Prober);
00070 }
00071 
00072 LinearOp ProbingPreconditionerFactory::buildPreconditionerOperator(LinearOp & lo,PreconditionerState & state) const
00073 {
00074    // make an epetra operator to be probed
00075    RCP<Epetra_Operator> epetraLo = rcp(new Teko::Epetra::EpetraOperatorWrapper(lo));
00076 
00077    // build color scheme
00078    prober->color();
00079 
00080    // probe operator: take me to your leader
00081    RCP<Epetra_CrsMatrix> retOp = prober->probe(*epetraLo);
00082    Teko::LinearOp probedOp = Thyra::epetraLinearOp(retOp);
00083 
00084    return Teko::buildInverse(*invFactory_,probedOp);
00085 }
00086 
00087 void ProbingPreconditionerFactory::initializeFromParameterList(const Teuchos::ParameterList & pl)
00088 {
00089    RCP<const InverseLibrary> invLib = getInverseLibrary();
00090 
00091    const std::string inverse_type = "Inverse Type";
00092    const std::string probing_graph_operator = "Probing Graph Operator";
00093    const std::string probing_graph = "Probing Graph";
00094    const std::string user_graph = "User Will Set Probing Graph";
00095 
00096    // get string specifying default inverse
00097    std::string invStr ="Amesos"; 
00098    if(pl.isParameter(inverse_type))
00099       invStr = pl.get<std::string>(inverse_type);
00100 
00101    if(pl.isParameter(probing_graph_operator))
00102       setGraphOperator(pl.get<Teko::LinearOp>(probing_graph_operator));
00103    else if(pl.isParameter(probing_graph))
00104       setGraph(pl.get<RCP<const Epetra_CrsGraph> >(probing_graph));
00105    else if(pl.isParameter(user_graph) && pl.get<bool>("User Will Set Probing Graph")){
00106      //noop
00107    }    
00108    else {
00109       Teuchos::RCP<Teko::RequestHandler> rh = getRequestHandler();
00110       rh->preRequest<RCP<const Epetra_CrsGraph> >(Teko::RequestMesg("Probing Graph"));
00111       setGraph(rh->request<RCP<const Epetra_CrsGraph> >(Teko::RequestMesg("Probing Graph")));
00112    }
00113 
00114    setInverseFactory(invLib->getInverseFactory(invStr));
00115 }
00116 
00117 void ProbingPreconditionerFactory::setGraphOperator(const Teko::LinearOp & graphOp)
00118 {
00119    RCP<const Epetra_CrsMatrix> crsMatrix = rcp_dynamic_cast<const Epetra_CrsMatrix>(Thyra::get_Epetra_Operator(*graphOp));
00120    setGraph(Teuchos::rcpFromRef(crsMatrix->Graph()));
00121 }
00122 
00123 void ProbingPreconditionerFactory::setGraph(const Teuchos::RCP<const Epetra_CrsGraph> & graph)
00124 {
00125    prober->setGraph(graph);
00126 }
00127 
00128 void ProbingPreconditionerFactory::setProberList(const Teuchos::ParameterList & list)
00129 {
00130    prober->setList(list);
00131 }
00132 
00133 } // end namespace Teko
00134 
00135 #endif
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