utestLagrange.cpp 9.13 KB
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// See LICENCE file at project root
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// ==== CMAKE =====
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// @FUSE_FFT
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// ================
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// Keep in private GIT
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// 
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#include "ScalFmmConfig.h"
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#include "Utils/FGlobal.hpp"

#include "Containers/FOctree.hpp"

#include "Files/FFmaGenericLoader.hpp"

#include "Core/FFmmAlgorithm.hpp"

#include "FUTester.hpp"

#include "Components/FSimpleLeaf.hpp"


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#include "Kernels/Uniform/FUnifCell.hpp"
#include "Kernels/Interpolation/FInterpMatrixKernel.hpp"
#include "Kernels/Uniform/FUnifKernel.hpp"
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#include "Kernels/P2P/FP2PParticleContainerIndexed.hpp"
/*
  In this test we compare the TestLagrange fmm results with the direct results.
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*/
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/** the test class
 *
 */
class TestLagrange : public FUTester<TestLagrange> {

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  ///////////////////////////////////////////////////////////
  // The tests!
  ///////////////////////////////////////////////////////////
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  template <class FReal, class CellClass, class ContainerClass, class KernelClass, class MatrixKernelClass,
	    class LeafClass, class OctreeClass, class FmmClass>
  void RunTest()	{
    //
    // Load particles
    //
    if(sizeof(FReal) == sizeof(float) ) {
      std::cerr << "No input data available for Float "<< std::endl;
      exit(EXIT_FAILURE);
    }
    const std::string parFile( (sizeof(FReal) == sizeof(float))?
			       "Test/DirectFloatbfma":
			       "UTest/DirectDouble.bfma");
    //
    std::string filename(SCALFMMDataPath+parFile);
    //
    FFmaGenericLoader<FReal> loader(filename);
    Print("Number of particles:");
    Print(loader.getNumberOfParticles());

    const int NbLevels        = 4;
    const int SizeSubLevels = 2;
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    // Load particles
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    FSize nbParticles = loader.getNumberOfParticles() ;
    FmaRWParticle<FReal, 8,8>* const particles = new FmaRWParticle<FReal, 8,8>[nbParticles];
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    loader.fillParticle(particles,nbParticles);
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    // Create octree
    OctreeClass tree(NbLevels, SizeSubLevels, loader.getBoxWidth(), loader.getCenterOfBox());
    //
    //   Insert particle in the tree
    //
    for(FSize idxPart = 0 ; idxPart < loader.getNumberOfParticles() ; ++idxPart){
      tree.insert(particles[idxPart].getPosition(), idxPart, particles[idxPart].getPhysicalValue() );
    }
    //
    // Create Matrix Kernel
    const MatrixKernelClass MatrixKernel; // FUKernelTester is only designed to work with 1/R, i.e. matrix kernel ctor takes no argument.
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    //
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    /////////////////////////////////////////////////////////////////////////////////////////////////
    // Run FMM computation
    /////////////////////////////////////////////////////////////////////////////////////////////////
    Print("Fmm...");
    KernelClass kernels(NbLevels, loader.getBoxWidth(), loader.getCenterOfBox(),&MatrixKernel);
    FmmClass algo(&tree,&kernels);
    algo.execute();
    //0
    FReal energy= 0.0 , energyD = 0.0 ;
    /////////////////////////////////////////////////////////////////////////////////////////////////
    // Compute direct energy
    /////////////////////////////////////////////////////////////////////////////////////////////////

    for(FSize idx = 0 ; idx < loader.getNumberOfParticles()  ; ++idx){
      energyD +=  particles[idx].getPotential()*particles[idx].getPhysicalValue() ;
    }
    /////////////////////////////////////////////////////////////////////////////////////////////////
    // Compare
    /////////////////////////////////////////////////////////////////////////////////////////////////
    Print("Compute Diff...");
    FMath::FAccurater<FReal> potentialDiff;
    FMath::FAccurater<FReal> fx, fy, fz;
    { // Check that each particle has been summed with all other

      tree.forEachLeaf([&](LeafClass* leaf){
	  const FReal*const potentials        = leaf->getTargets()->getPotentials();
	  const FReal*const physicalValues    = leaf->getTargets()->getPhysicalValues();
	  const FReal*const forcesX           = leaf->getTargets()->getForcesX();
	  const FReal*const forcesY           = leaf->getTargets()->getForcesY();
	  const FReal*const forcesZ           = leaf->getTargets()->getForcesZ();
	  const FSize nbParticlesInLeaf       = leaf->getTargets()->getNbParticles();
	  const FVector<FSize>& indexes       = leaf->getTargets()->getIndexes();

	  for(FSize idxPart = 0 ; idxPart < nbParticlesInLeaf ; ++idxPart){
	    const FSize indexPartOrig = indexes[idxPart];
	    potentialDiff.add(particles[indexPartOrig].getPotential(),potentials[idxPart]);
	    fx.add(particles[indexPartOrig].getForces()[0],forcesX[idxPart]);
	    fy.add(particles[indexPartOrig].getForces()[1],forcesY[idxPart]);
	    fz.add(particles[indexPartOrig].getForces()[2],forcesZ[idxPart]);
	    energy   += potentials[idxPart]*physicalValues[idxPart];
	  }
	});
    }

    delete[] particles;

    // Print for information

    Print("Potential diff is = ");
    printf("         Pot L2Norm     %e\n",potentialDiff.getL2Norm());
    printf("         Pot RL2Norm   %e\n",potentialDiff.getRelativeL2Norm());
    printf("         Pot RMSError   %e\n",potentialDiff.getRMSError());
    Print("Fx diff is = ");
    printf("         Fx L2Norm     %e\n",fx.getL2Norm());
    printf("         Fx RL2Norm   %e\n",fx.getRelativeL2Norm());
    printf("         Fx RMSError   %e\n",fx.getRMSError());
    Print("Fy diff is = ");
    printf("        Fy L2Norm     %e\n",fy.getL2Norm());
    printf("        Fy RL2Norm   %e\n",fy.getRelativeL2Norm());
    printf("        Fy RMSError   %e\n",fy.getRMSError());
    Print("Fz diff is = ");
    printf("        Fz L2Norm     %e\n",fz.getL2Norm());
    printf("        Fz RL2Norm   %e\n",fz.getRelativeL2Norm());
    printf("        Fz RMSError   %e\n",fz.getRMSError());
    FReal L2error = (fx.getRelativeL2Norm()*fx.getRelativeL2Norm() + fy.getRelativeL2Norm()*fy.getRelativeL2Norm()  + fz.getRelativeL2Norm() *fz.getRelativeL2Norm()  );
    printf(" Total L2 Force Error= %e\n",FMath::Sqrt(L2error)) ;
    printf("  Energy Error  =   %.12e\n",FMath::Abs(energy-energyD));
    printf("  Energy FMM    =   %.12e\n",FMath::Abs(energy));
    printf("  Energy DIRECT =   %.12e\n",FMath::Abs(energyD));

    // Assert
    const FReal MaximumDiffPotential = FReal(9e-3);
    const FReal MaximumDiffForces     = FReal(9e-2);

    Print("Test1 - Error Relative L2 norm Potential ");
    uassert(potentialDiff.getRelativeL2Norm() < MaximumDiffPotential);    //1
    Print("Test2 - Error RMS L2 norm Potential ");
    uassert(potentialDiff.getRMSError() < MaximumDiffPotential);  //2
    Print("Test3 - Error Relative L2 norm FX ");
    uassert(fx.getRelativeL2Norm()  < MaximumDiffForces);                       //3
    Print("Test4 - Error RMS L2 norm FX ");
    uassert(fx.getRMSError() < MaximumDiffForces);                      //4
    Print("Test5 - Error Relative L2 norm FY ");
    uassert(fy.getRelativeL2Norm()  < MaximumDiffForces);                       //5
    Print("Test6 - Error RMS L2 norm FY ");
    uassert(fy.getRMSError() < MaximumDiffForces);                      //6
    Print("Test7 - Error Relative L2 norm FZ ");
    uassert(fz.getRelativeL2Norm()  < MaximumDiffForces);                      //8
    Print("Test8 - Error RMS L2 norm FZ ");
    uassert(fz.getRMSError() < MaximumDiffForces);                                           //8
    Print("Test9 - Error Relative L2 norm F ");
    uassert(L2error              < MaximumDiffForces);                                            //9   Total Force
    Print("Test10 - Relative error Energy ");
    uassert(FMath::Abs(energy-energyD) /energyD< MaximumDiffPotential);                     //10  Total Energy


  }

  /** If memstas is running print the memory used */
  void PostTest() {
    if( FMemStats::controler.isUsed() ){
      std::cout << "Memory used at the end " << FMemStats::controler.getCurrentAllocated()
		<< " Bytes (" << FMemStats::controler.getCurrentAllocatedMB() << "MB)\n";
      std::cout << "Max memory used " << FMemStats::controler.getMaxAllocated()
		<< " Bytes (" << FMemStats::controler.getMaxAllocatedMB() << "MB)\n";
      std::cout << "Total memory used " << FMemStats::controler.getTotalAllocated()
		<< " Bytes (" << FMemStats::controler.getTotalAllocatedMB() << "MB)\n";
    }
  }


  ///////////////////////////////////////////////////////////
  // Set the tests!
  ///////////////////////////////////////////////////////////


  /** TestUnifKernel */
  void TestUnifKernel(){
    typedef double FReal;
    const unsigned int ORDER = 6;
    // typedefs
    typedef FP2PParticleContainerIndexed<FReal> ContainerClass;
    typedef FSimpleLeaf<FReal, ContainerClass >  LeafClass;
    typedef FInterpMatrixKernelR<FReal> MatrixKernelClass;
    typedef FUnifCell<FReal,ORDER> CellClass;
    typedef FOctree<FReal, CellClass,ContainerClass,LeafClass> OctreeClass;
    typedef FUnifKernel<FReal,CellClass,ContainerClass,MatrixKernelClass,ORDER> KernelClass;
    typedef FFmmAlgorithm<OctreeClass,CellClass,ContainerClass,KernelClass,LeafClass> FmmClass;
    // run test
    RunTest<FReal,CellClass,ContainerClass,KernelClass,MatrixKernelClass,LeafClass,OctreeClass,FmmClass>();
  }

  ///////////////////////////////////////////////////////////
  // Set the tests!
  ///////////////////////////////////////////////////////////

  /** set test */
  void SetTests(){
    AddTest(&TestLagrange::TestUnifKernel,"Test Lagrange Kernel ");
  }
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};


// You must do this
TestClass(TestLagrange)