Tpetra Matrix/Vector Services Version of the Day
MultiPrecExample_qd_dd_double.cpp
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00005 //          Tpetra: Templated Linear Algebra Services Package
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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 <qd/qd_real.h>
00056 
00057 #include "MultiPrecDriver.hpp"
00058 
00063 int main(int argc, char *argv[])
00064 {
00065   using Teuchos::RCP;
00066   using Teuchos::rcp;
00067   using Teuchos::Comm;
00068   using Teuchos::ParameterList;
00069 
00070   // 
00071   // Get the communicator
00072   //
00073   Teuchos::oblackholestream blackhole;
00074   Teuchos::GlobalMPISession mpiSession(&argc,&argv,&blackhole);
00075   auto comm = Tpetra::DefaultPlatform::getDefaultPlatform().getComm();
00076   const int myImageID = comm->getRank();
00077 
00078   //
00079   // Get example parameters from command-line processor
00080   //  
00081   bool verbose = (myImageID==0);
00082   bool unfused = false;
00083   std::string matfile;
00084   std::string xmlfile;
00085   std::string machineFile;
00086   Teuchos::CommandLineProcessor cmdp(false,true);
00087   cmdp.setOption("verbose","quiet",&verbose,"Print messages and results.");
00088   cmdp.setOption("matrix-file",&matfile,"Filename for matrix");
00089   cmdp.setOption("param-file", &xmlfile,"XML file for solver parameters");
00090   cmdp.setOption("machine-file",&machineFile,"Filename for XML machine description file.");
00091   cmdp.setOption("unfused","no-unfused",&unfused,"Test unfused iteration.");
00092   if (cmdp.parse(argc,argv) != Teuchos::CommandLineProcessor::PARSE_SUCCESSFUL) {
00093     return -1;
00094   }
00095 
00096   // 
00097   // read machine file and initialize platform
00098   // 
00099   RCP<Teuchos::ParameterList> machinePL = Teuchos::parameterList();
00100   std::string defaultMachine(
00101     " <ParameterList>                                                               "
00102     "   <ParameterList name='%1=0'>                                                 "
00103     "     <Parameter name='NodeType'     type='string' value='Kokkos::SerialNode'/> "
00104     "   </ParameterList>                                                            "
00105     " </ParameterList>                                                              "
00106   );
00107   Teuchos::updateParametersFromXmlString(defaultMachine,machinePL.ptr());
00108   if (machineFile != "") Teuchos::updateParametersFromXmlFile(machineFile,machinePL.ptr());
00109 
00110   // 
00111   // create the platform object
00112   // 
00113   Tpetra::HybridPlatform platform(comm,*machinePL);
00114 
00115   // 
00116   // Define the type stack
00117   // 
00118   TPETRAEXT_TYPESTACK3(MPStack, qd_real, dd_real, double )
00119 
00120   //
00121   // instantiate a driver on the scalar stack
00122   //
00123   MultiPrecDriver<MPStack> driver;
00124   // hand output stream to driver
00125   if (verbose) driver.out = Teuchos::getFancyOStream(Teuchos::rcp(&std::cout,false));
00126   else         driver.out = Teuchos::getFancyOStream(Teuchos::rcp(new Teuchos::oblackholestream()));
00127   // hand matrix file to driver
00128   driver.matrixFile = matfile;
00129   // other params
00130   driver.unfusedTest = unfused;
00131 
00132   //
00133   // get the solver parameters
00134   // 
00135   RCP<Teuchos::ParameterList> params = Teuchos::parameterList();
00136   // default solver stack parameters
00137   std::string xmlString(
00138     " <ParameterList>                                                       \n"
00139     "   <Parameter name='tolerance' value='1e-60' type='double'/>           \n"
00140     "   <Parameter name='verbose' value='2' type='int'/>                    \n"
00141     "   <ParameterList name='child'>                                        \n"
00142     "     <Parameter name='tolerance' value='1e-28' type='double'/>         \n"
00143     "     <Parameter name='verbose' value='2' type='int'/>                  \n"
00144     "     <ParameterList name='child'>                                      \n"
00145     "       <Parameter name='tolerance' value='1e-14' type='double'/>       \n"
00146     "       <Parameter name='verbose' value='0' type='int'/>                \n"
00147     "       <Parameter name='Extract Diagonal' value='true' type='bool'/>   \n"
00148     "     </ParameterList>                                                  \n"
00149     "   </ParameterList>                                                    \n"
00150     " </ParameterList>                                                      \n"
00151   );
00152   Teuchos::updateParametersFromXmlString(xmlString,params.ptr());
00153   if (xmlfile != "") Teuchos::updateParametersFromXmlFile(xmlfile,params.ptr());
00154   // hand solver parameters to driver
00155   driver.params = params;
00156 
00157   // 
00158   // run the driver
00159   // 
00160   platform.runUserCode(driver);
00161 
00162   //
00163   // Print result
00164   if (driver.testPassed) {
00165     *driver.out << "End Result: TEST PASSED" << std::endl;
00166   }
00167 
00168   return 0;
00169 }
00170 
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