Tpetra Matrix/Vector Services Version of the Day
MultiPrecExample_qd_dd.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 
00051 // no CXX11 on the GPU
00052 #undef HAVE_KOKKOSCLASSIC_THRUST
00053 #include <Tpetra_HybridPlatform.hpp>
00054 #include <TpetraExt_TypeStack.hpp>
00055 
00056 #include <iostream>
00057 
00058 #include <qd/qd_real.h>
00059 
00060 #include "MultiPrecDriver.hpp"
00061 
00066 int main(int argc, char *argv[])
00067 {
00068   using Teuchos::RCP;
00069   using Teuchos::rcp;
00070   using Teuchos::Comm;
00071   using Teuchos::ParameterList;
00072 
00073   // 
00074   // Get the communicator
00075   //
00076   Teuchos::oblackholestream blackhole;
00077   Teuchos::GlobalMPISession mpiSession(&argc,&argv,&blackhole);
00078   auto comm = Tpetra::DefaultPlatform::getDefaultPlatform().getComm();
00079   const int myImageID = comm->getRank();
00080 
00081   //
00082   // Get example parameters from command-line processor
00083   //  
00084   bool verbose = (myImageID==0);
00085   bool unfused = false;
00086   std::string matfile;
00087   std::string xmlfile;
00088   std::string machineFile;
00089   Teuchos::CommandLineProcessor cmdp(false,true);
00090   cmdp.setOption("verbose","quiet",&verbose,"Print messages and results.");
00091   cmdp.setOption("matrix-file",&matfile,"Filename for matrix");
00092   cmdp.setOption("param-file", &xmlfile,"XML file for solver parameters");
00093   cmdp.setOption("machine-file",&machineFile,"Filename for XML machine description file.");
00094   cmdp.setOption("unfused","no-unfused",&unfused,"Test unfused iteration.");
00095   if (cmdp.parse(argc,argv) != Teuchos::CommandLineProcessor::PARSE_SUCCESSFUL) {
00096     return -1;
00097   }
00098 
00099   // 
00100   // read machine file and initialize platform
00101   // 
00102   RCP<Teuchos::ParameterList> machinePL = Teuchos::parameterList();
00103   std::string defaultMachine(
00104     " <ParameterList>                                                               "
00105     "   <ParameterList name='%1=0'>                                                 "
00106     "     <Parameter name='NodeType'     type='string' value='KokkosClassic::SerialNode'/> "
00107     "   </ParameterList>                                                            "
00108     " </ParameterList>                                                              "
00109   );
00110   Teuchos::updateParametersFromXmlString(defaultMachine,machinePL.ptr());
00111   if (machineFile != "") Teuchos::updateParametersFromXmlFile(machineFile,machinePL.ptr());
00112 
00113   // 
00114   // create the platform object
00115   // 
00116   Tpetra::HybridPlatform platform(comm,*machinePL);
00117 
00118   // 
00119   // Define the type stack
00120   // 
00121   TPETRAEXT_TYPESTACK2(MPStack, qd_real, dd_real )
00122 
00123   //
00124   // instantiate a driver on the scalar stack
00125   //
00126   MultiPrecDriver<MPStack> driver;
00127   // hand output stream to driver
00128   if (verbose) driver.out = Teuchos::getFancyOStream(Teuchos::rcp(&std::cout,false));
00129   else         driver.out = Teuchos::getFancyOStream(Teuchos::rcp(new Teuchos::oblackholestream()));
00130   // hand matrix file to driver
00131   driver.matrixFile = matfile;
00132   // other params
00133   driver.unfusedTest = unfused;
00134 
00135   //
00136   // get the solver parameters
00137   // 
00138   RCP<Teuchos::ParameterList> params = Teuchos::parameterList();
00139   // default solver stack parameters
00140   std::string xmlString(
00141     " <ParameterList>                                                       \n"
00142     "   <Parameter name='tolerance' value='1e-60' type='double'/>           \n"
00143     "   <Parameter name='verbose' value='2' type='int'/>                    \n"
00144     "   <ParameterList name='child'>                                        \n"
00145     "     <Parameter name='tolerance' value='1e-28' type='double'/>         \n"
00146     "     <Parameter name='verbose' value='2' type='int'/>                  \n"
00147     "     <Parameter name='Extract Diagonal' value='true' type='bool'/>     \n"
00148     "   </ParameterList>                                                    \n"
00149     " </ParameterList>                                                      \n"
00150   );
00151   Teuchos::updateParametersFromXmlString(xmlString,params.ptr());
00152   if (xmlfile != "") Teuchos::updateParametersFromXmlFile(xmlfile,params.ptr());
00153   // hand solver parameters to driver
00154   driver.params = params;
00155 
00156   // 
00157   // run the driver
00158   // 
00159   platform.runUserCode(driver);
00160 
00161   //
00162   // Print result
00163   if (driver.testPassed) {
00164     *driver.out << "End Result: TEST PASSED" << std::endl;
00165   }
00166 
00167   return 0;
00168 }
00169 
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