Tpetra Matrix/Vector Services Version of the Day
MultiPrecExample_double_double.cpp
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00043 
00044 #include <Teuchos_CommandLineProcessor.hpp>
00045 #include <Teuchos_GlobalMPISession.hpp>
00046 #include <Teuchos_oblackholestream.hpp>
00047 #include <Teuchos_XMLParameterListHelpers.hpp>
00048 
00049 #include <Tpetra_DefaultPlatform.hpp>
00050 #include <Tpetra_HybridPlatform.hpp>
00051 #include <TpetraExt_TypeStack.hpp>
00052 
00053 #include <iostream>
00054 
00055 #include "MultiPrecDriver.hpp"
00056 
00061 int main(int argc, char *argv[])
00062 {
00063   using Teuchos::RCP;
00064   using Teuchos::rcp;
00065   using Teuchos::Comm;
00066   using Teuchos::ParameterList;
00067 
00068   // 
00069   // Get the communicator
00070   //
00071   Teuchos::oblackholestream blackhole;
00072   Teuchos::GlobalMPISession mpiSession(&argc,&argv,&blackhole);
00073   auto comm = Tpetra::DefaultPlatform::getDefaultPlatform().getComm();
00074   const int myImageID = comm->getRank();
00075 
00076   //
00077   // Get example parameters from command-line processor
00078   //  
00079   bool verbose = (myImageID==0);
00080   bool unfused = false;
00081   std::string matfile;
00082   std::string xmlfile;
00083   std::string machineFile;
00084   Teuchos::CommandLineProcessor cmdp(false,true);
00085   cmdp.setOption("verbose","quiet",&verbose,"Print messages and results.");
00086   cmdp.setOption("matrix-file",&matfile,"Filename for matrix");
00087   cmdp.setOption("param-file", &xmlfile,"XML file for solver parameters");
00088   cmdp.setOption("machine-file",&machineFile,"Filename for XML machine description file.");
00089   cmdp.setOption("unfused","no-unfused",&unfused,"Test unfused iteration.");
00090   if (cmdp.parse(argc,argv) != Teuchos::CommandLineProcessor::PARSE_SUCCESSFUL) {
00091     return -1;
00092   }
00093 
00094   // 
00095   // read machine file and initialize platform
00096   // 
00097   RCP<Teuchos::ParameterList> machinePL = Teuchos::parameterList();
00098   std::string defaultMachine(
00099     " <ParameterList>                                                               "
00100     "   <ParameterList name='%1=0'>                                                 "
00101     "     <Parameter name='NodeType'     type='string' value='Kokkos::SerialNode'/> "
00102     "   </ParameterList>                                                            "
00103     " </ParameterList>                                                              "
00104   );
00105   Teuchos::updateParametersFromXmlString(defaultMachine,machinePL.ptr());
00106   if (machineFile != "") Teuchos::updateParametersFromXmlFile(machineFile,machinePL.ptr());
00107 
00108   // 
00109   // create the platform object
00110   // 
00111   Tpetra::HybridPlatform platform(comm,*machinePL);
00112 
00113   // 
00114   // Define the type stack
00115   // 
00116   TPETRAEXT_TYPESTACK2(MPStack, double, double)
00117 
00118   //
00119   // instantiate a driver on the scalar stack
00120   //
00121   MultiPrecDriver<MPStack> driver;
00122   // hand output stream to driver
00123   if (verbose) driver.out = Teuchos::getFancyOStream(Teuchos::rcp(&std::cout,false));
00124   else         driver.out = Teuchos::getFancyOStream(Teuchos::rcp(new Teuchos::oblackholestream()));
00125   // hand matrix file to driver
00126   driver.matrixFile = matfile;
00127   // other params
00128   driver.unfusedTest = unfused;
00129 
00130   //
00131   // get the solver parameters
00132   // 
00133   RCP<Teuchos::ParameterList> params = Teuchos::parameterList();
00134   // default solver stack parameters
00135   std::string xmlString(
00136     " <ParameterList>                                                  \n"
00137     "   <Parameter name='tolerance' value='5e-15' type='double'/>      \n"
00138     "   <Parameter name='verbose' value='2' type='int'/>               \n"
00139     "   <Parameter name='Extract Diagonal' value='true' type='bool'/>  \n"
00140     "   <ParameterList name='child'>                                     \n"
00141     "     <Parameter name='tolerance' value='1e-7' type='double'/>       \n"
00142     "     <Parameter name='verbose' value='1' type='int'/>               \n"
00143     "     <Parameter name='Extract Diagonal' value='true' type='bool'/>  \n" 
00144     "   </ParameterList>                                                 \n"
00145     " </ParameterList>                                                 \n"
00146   );
00147   Teuchos::updateParametersFromXmlString(xmlString,params.ptr());
00148   if (xmlfile != "") Teuchos::updateParametersFromXmlFile(xmlfile,params.ptr());
00149   // hand solver parameters to driver
00150   driver.params = params;
00151 
00152   // 
00153   // run the driver
00154   // 
00155   platform.runUserCode(driver);
00156 
00157   //
00158   // Print result
00159   if (driver.testPassed) {
00160     *driver.out << "End Result: TEST PASSED" << std::endl;
00161   }
00162 
00163   return 0;
00164 }
00165 
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