Tpetra Matrix/Vector Services Version of the Day
RTIInlineCG.cpp
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00004 // 
00005 //          Tpetra: Templated Linear Algebra Services Package
00006 //                 Copyright (2008) Sandia Corporation
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00042 */
00043 
00044 #include "RTIInlineCG.hpp"
00045 
00046 int main(int argc, char *argv[])
00047 {
00048   using Tpetra::global_size_t;
00049   using Teuchos::RCP;
00050   using Teuchos::rcp;
00051   using Teuchos::Comm;
00052   using Teuchos::ParameterList;
00053 
00054   // 
00055   // Get the communicator
00056   //
00057   Teuchos::oblackholestream blackhole;
00058   Teuchos::GlobalMPISession mpiSession(&argc,&argv,&blackhole);
00059   auto comm = Tpetra::DefaultPlatform::getDefaultPlatform().getComm();
00060   const int myImageID = comm->getRank();
00061 
00062   //
00063   // Get example parameters from command-line processor
00064   //  
00065   bool verbose = (myImageID==0);
00066   std::string xmlfile;
00067   std::string machineFile;
00068 
00069   Teuchos::CommandLineProcessor cmdp(false,true);
00070   cmdp.setOption("verbose","quiet",&verbose,"Print messages and results.");
00071   cmdp.setOption("param-file", &xmlfile,"XML file for solver parameters");
00072   cmdp.setOption("machine-file",&machineFile,"Filename for XML machine description file.");
00073   if (cmdp.parse(argc,argv) != Teuchos::CommandLineProcessor::PARSE_SUCCESSFUL) {
00074     return -1;
00075   }
00076 
00077   // 
00078   // read machine file and initialize platform
00079   // 
00080   RCP<Teuchos::ParameterList> machinePL = Teuchos::parameterList();
00081   std::string defaultMachine(
00082     " <ParameterList>                                                               "
00083     "   <ParameterList name='%1=0'>                                                 "
00084     "     <Parameter name='NodeType'     type='string' value='Kokkos::SerialNode'/> "
00085     "   </ParameterList>                                                            "
00086     " </ParameterList>                                                              "
00087   );
00088   Teuchos::updateParametersFromXmlString(defaultMachine,machinePL.getRawPtr());
00089   if (machineFile != "") Teuchos::updateParametersFromXmlFile(machineFile,machinePL.getRawPtr());
00090 
00091   // 
00092   // create the platform object
00093   // 
00094   Tpetra::HybridPlatform platform(comm,*machinePL);
00095 
00096   //
00097   // instantiate a driver on the scalar stack
00098   //
00099   CGDriver<double> driver;
00100   // hand output stream to driver
00101   if (verbose) driver.out = Teuchos::getFancyOStream(Teuchos::rcp(&std::cout,false));
00102   else         driver.out = Teuchos::getFancyOStream(Teuchos::rcp(new Teuchos::oblackholestream()));
00103 
00104   //
00105   // get the solver parameters
00106   // 
00107   RCP<Teuchos::ParameterList> params = Teuchos::parameterList();
00108   // default solver stack parameters
00109   std::string xmlString(
00110     " <ParameterList>                                                  \n"
00111     "   <Parameter name='tolerance' value='5e-15' type='double'/>      \n"
00112     "   <Parameter name='verbose' value='1' type='int'/>               \n"
00113     "   <Parameter name='kappa' value='100' type='double'/>            \n"
00114     "   <Parameter name='size'  value='100' type='int'/>               \n"
00115     "   <Parameter name='numIters' value='100' type='int'/>            \n"
00116     " </ParameterList>                                                 \n"
00117   );
00118   Teuchos::updateParametersFromXmlString(xmlString,params.getRawPtr());
00119   if (xmlfile != "") Teuchos::updateParametersFromXmlFile(xmlfile,params.getRawPtr());
00120   // hand solver parameters to driver
00121   driver.params = params;
00122 
00123   // 
00124   // run the driver
00125   // 
00126   platform.runUserCode(driver);
00127 
00128   //
00129   // Print result
00130   if (driver.testPassed) {
00131     *driver.out << "End Result: TEST PASSED" << std::endl;
00132   }
00133 
00134   return 0;
00135 }
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