Add a rotation + blocked tree example (time is the same with sequential to execute)

Tests/noDist/testBlockedRoation.cpp

+#include "../../Src/GroupTree/FGroupTree.hpp"
+
+#include "../../Src/Components/FSimpleLeaf.hpp"
+#include "../../Src/Containers/FVector.hpp"
+
+#include "../../Src/Kernels/P2P/FP2PParticleContainer.hpp"
+
+#include "../../Src/Kernels/Rotation/FRotationKernel.hpp"
+#include "../../Src/Kernels/Rotation/FRotationCell.hpp"
+
+#include "../../Src/Utils/FMath.hpp"
+#include "../../Src/Utils/FMemUtils.hpp"
+#include "../../Src/Utils/FParameters.hpp"
+
+#include "../../Src/Files/FRandomLoader.hpp"
+#include "../../Src/Files/FFmaGenericLoader.hpp"
+
+#include "../../Src/GroupTree/FGroupSeqAlgorithm.hpp"
+
+#include "../../Src/Utils/FParameterNames.hpp"
+
+#include "../../Src/Components/FTestParticleContainer.hpp"
+#include "../../Src/Components/FTestCell.hpp"
+#include "../../Src/Components/FTestKernels.hpp"
+#include "../Src/GroupTree/FP2PGroupParticleContainer.hpp"
+
+#include "../../Src/Core/FFmmAlgorithm.hpp"
+
+#include <memory>
+
+
+
+
+int main(int argc, char* argv[]){
+    const FParameterNames LocalOptionBlocSize { {"-bs"}, "The size of the block of the blocked tree"};
+    const FParameterNames LocalOptionNoValidate { {"-no-validation"}, "To avoid comparing with direct computation"};
+    FHelpDescribeAndExit(argc, argv, "Test the blocked tree by counting the particles.",
+                         FParameterDefinitions::OctreeHeight,FParameterDefinitions::InputFile,
+                         FParameterDefinitions::NbParticles, LocalOptionBlocSize, LocalOptionNoValidate);
+    // Initialize the types
+    static const int P = 9;
+    typedef FRotationCell<P>               GroupCellClass;
+    typedef FP2PGroupParticleContainer<>          GroupContainerClass;
+    typedef FGroupTree< GroupCellClass, GroupContainerClass, 5, FReal>  GroupOctreeClass;
+    typedef FRotationKernel< GroupCellClass, GroupContainerClass , P>   GroupKernelClass;
+    typedef FGroupSeqAlgorithm<GroupOctreeClass, typename GroupOctreeClass::CellGroupClass, GroupCellClass, GroupKernelClass, typename GroupOctreeClass::ParticleGroupClass, GroupContainerClass > GroupAlgorithm;
+
+    // Get params
+    const int NbLevels      = FParameters::getValue(argc,argv,FParameterDefinitions::OctreeHeight.options, 5);
+    const int groupSize     = FParameters::getValue(argc,argv,LocalOptionBlocSize.options, 250);
+    const char* const filename = FParameters::getStr(argc,argv,FParameterDefinitions::InputFile.options, "../Data/test20k.fma");
+
+    // Load the particles
+    //FRandomLoader loader(FParameters::getValue(argc,argv,FParameterDefinitions::NbParticles.options, 20), 1.0, FPoint(0,0,0), 0);
+    FFmaGenericLoader loader(filename);
+    FAssertLF(loader.isOpen());
+    FTic timer;
+
+    FP2PParticleContainer<> allParticles;
+    for(int idxPart = 0 ; idxPart < loader.getNumberOfParticles() ; ++idxPart){
+        FReal physicalValue;
+        FPoint particlePosition;
+        loader.fillParticle(&particlePosition, &physicalValue);
+        allParticles.push(particlePosition, physicalValue);
+    }
+    std::cout << "Particles loaded in " << timer.tacAndElapsed() << "s\n";
+
+    // Put the data into the tree
+    timer.tic();
+    GroupOctreeClass groupedTree(NbLevels, loader.getBoxWidth(), loader.getCenterOfBox(), groupSize, &allParticles);
+    groupedTree.printInfoBlocks();
+    std::cout << "Tree created in " << timer.tacAndElapsed() << "s\n";
+
+    // Run the algorithm
+    GroupKernelClass groupkernel(NbLevels, loader.getBoxWidth(), loader.getCenterOfBox());
+    GroupAlgorithm groupalgo(&groupedTree,&groupkernel);
+
+    timer.tic();
+    groupalgo.execute();
+    std::cout << "Kernel executed in in " << timer.tacAndElapsed() << "s\n";
+
+    // Validate the result
+    if(FParameters::existParameter(argc, argv, LocalOptionNoValidate.options) == false){
+        int offsetParticles = 0;
+        FReal*const allPhysicalValues = allParticles.getPhysicalValues();
+        FReal*const allPosX = const_cast<FReal*>( allParticles.getPositions()[0]);
+        FReal*const allPosY = const_cast<FReal*>( allParticles.getPositions()[1]);
+        FReal*const allPosZ = const_cast<FReal*>( allParticles.getPositions()[2]);
+
+        groupedTree.forEachCellLeaf<FP2PGroupParticleContainer<> >([&](GroupCellClass* cellTarget, FP2PGroupParticleContainer<> * leafTarget){
+            const FReal*const physicalValues = leafTarget->getPhysicalValues();
+            const FReal*const posX = leafTarget->getPositions()[0];
+            const FReal*const posY = leafTarget->getPositions()[1];
+            const FReal*const posZ = leafTarget->getPositions()[2];
+            const int nbPartsInLeafTarget = leafTarget->getNbParticles();
+
+            for(int idxPart = 0 ; idxPart < nbPartsInLeafTarget ; ++idxPart){
+                allPhysicalValues[offsetParticles + idxPart] = physicalValues[idxPart];
+                allPosX[offsetParticles + idxPart] = posX[idxPart];
+                allPosY[offsetParticles + idxPart] = posY[idxPart];
+                allPosZ[offsetParticles + idxPart] = posZ[idxPart];
+            }
+
+            offsetParticles += nbPartsInLeafTarget;
+        });
+
+        FAssertLF(offsetParticles == loader.getNumberOfParticles());
+
+        FReal*const allDirectPotentials = allParticles.getPotentials();
+        FReal*const allDirectforcesX = allParticles.getForcesX();
+        FReal*const allDirectforcesY = allParticles.getForcesY();
+        FReal*const allDirectforcesZ = allParticles.getForcesZ();
+
+        for(int idxTgt = 0 ; idxTgt < offsetParticles ; ++idxTgt){
+            for(int idxMutual = idxTgt + 1 ; idxMutual < offsetParticles ; ++idxMutual){
+                FP2PR::MutualParticles(
+                    allPosX[idxTgt],allPosY[idxTgt],allPosZ[idxTgt], allPhysicalValues[idxTgt],
+                    &allDirectforcesX[idxTgt], &allDirectforcesY[idxTgt], &allDirectforcesZ[idxTgt], &allDirectPotentials[idxTgt],
+                    allPosX[idxMutual],allPosY[idxMutual],allPosZ[idxMutual], allPhysicalValues[idxMutual],
+                    &allDirectforcesX[idxMutual], &allDirectforcesY[idxMutual], &allDirectforcesZ[idxMutual], &allDirectPotentials[idxMutual]
+                );
+            }
+        }
+
+        FMath::FAccurater potentialDiff;
+        FMath::FAccurater fx, fy, fz;
+        offsetParticles = 0;
+        groupedTree.forEachCellLeaf<FP2PGroupParticleContainer<> >([&](GroupCellClass* cellTarget, FP2PGroupParticleContainer<> * leafTarget){
+            const FReal*const potentials = leafTarget->getPotentials();
+            const FReal*const forcesX = leafTarget->getForcesX();
+            const FReal*const forcesY = leafTarget->getForcesY();
+            const FReal*const forcesZ = leafTarget->getForcesZ();
+            const int nbPartsInLeafTarget = leafTarget->getNbParticles();
+
+            for(int idxTgt = 0 ; idxTgt < nbPartsInLeafTarget ; ++idxTgt){
+                potentialDiff.add(allDirectPotentials[idxTgt + offsetParticles], potentials[idxTgt]);
+                fx.add(allDirectforcesX[idxTgt + offsetParticles], forcesX[idxTgt]);
+                fy.add(allDirectforcesY[idxTgt + offsetParticles], forcesY[idxTgt]);
+                fz.add(allDirectforcesZ[idxTgt + offsetParticles], forcesZ[idxTgt]);
+            }
+
+            offsetParticles += nbPartsInLeafTarget;
+        });
+
+        std::cout << "Error : Potential " << potentialDiff << "\n";
+        std::cout << "Error : fx " << fx << "\n";
+        std::cout << "Error : fy " << fy << "\n";
+        std::cout << "Error : fz " << fz << "\n";
+    }
+
+    return 0;
+}
+