explicit_euler.cpp

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#include "../../include/integrator/explicit_euler.h"
 
/*ExplicitEuler::ExplicitEuler(SimulationParameters simulationParameters, integer numParticles,
                             integer numNodes) : Miluphpc(simulationParameters, numParticles, numNodes) {
    //integratedParticles = new IntegratedParticles[1];
    printf("ExplicitEuler()\n");
}*/
 
ExplicitEuler::ExplicitEuler(SimulationParameters simulationParameters) : Miluphpc(simulationParameters) {
    Logger(DEBUG) << "ExplicitEuler()";
}
 
ExplicitEuler::~ExplicitEuler() {
    Logger(DEBUG) << "~ExplicitEuler()";
}
 
void ExplicitEuler::integrate(int step) {
 
    Timer timer;
    real time = 0.;
 
    real timeElapsed;
 
    Logger(INFO) << "ExplicitEuler::integrate()... currentTime: " << *simulationTimeHandler->h_currentTime
        << " | subEndTime: " << *simulationTimeHandler->h_subEndTime
        << " | endTime: " << *simulationTimeHandler->h_endTime;
 
    while (*simulationTimeHandler->h_currentTime < *simulationTimeHandler->h_subEndTime) {
 
        //profiler.setStep(subStep);
        subStep++;
 
        Logger(INFO) << "ExplicitEuler::integrate while...";
 
        timer.reset();
        if (simulationParameters.removeParticles) {
            time = removeParticles();
        }
        timeElapsed = timer.elapsed();
        profiler.value2file(ProfilerIds::Time::removeParticles, timeElapsed);
        Logger(TIME) << "removing particles: " << timeElapsed << " ms";
 
        Logger(INFO) << "rhs::loadBalancing()";
        timer.reset();
        if (simulationParameters.loadBalancing && step != 0 && step % simulationParameters.loadBalancingInterval == 0) {
            dynamicLoadBalancing(simulationParameters.loadBalancingBins);
        }
        real elapsed = timer.elapsed();
        //totalTime += elapsed;
        Logger(TIME) << "rhs::loadBalancing(): " << elapsed << " ms";
        profiler.value2file(ProfilerIds::Time::loadBalancing, elapsed);
 
        //Logger(INFO) << "checking for nans before update() ..";
        //ParticlesNS::Kernel::Launch::check4nans(particleHandler->d_particles, numParticlesLocal);
 
        timer.reset();
        //real time;
        // -------------------------------------------------------------------------------------------------------------
        time = rhs(step, true, true);
        // -------------------------------------------------------------------------------------------------------------
        timeElapsed = timer.elapsed();
        Logger(TIME) << "rhs: " << time << " ms";
        Logger(TIME) << "rhsElapsed: " << timeElapsed << " ms";
        profiler.value2file(ProfilerIds::Time::rhs, time);
        profiler.value2file(ProfilerIds::Time::rhsElapsed, timeElapsed);
 
        time = ExplicitEulerNS::Kernel::Launch::update(particleHandler->d_particles, numParticlesLocal,
                                                *simulationTimeHandler->h_dt); //(real) simulationParameters.timestep);
 
        profiler.value2file(ProfilerIds::Time::integrate, time);
 
        //Logger(INFO) << "timestep: " << (real) simulationParameters.timestep;
 
        *simulationTimeHandler->h_currentTime += *simulationTimeHandler->h_dt;
        simulationTimeHandler->copy(To::device);
 
#if INTEGRATE_SML
        cuda::set(particleHandler->d_dsmldt, (real)0, numParticles);
#endif
 
        Logger(TRACE) << "finished sub step - simulation time: " << *simulationTimeHandler->h_currentTime
                     << " (STEP: " << step << " | subStep: " << subStep
                     << " | time = " << *simulationTimeHandler->h_currentTime << "/"
                     << *simulationTimeHandler->h_subEndTime << "/"
                     << *simulationTimeHandler->h_endTime << ")";
 
        subDomainKeyTreeHandler->copy(To::host, true, false);
        profiler.vector2file(ProfilerIds::ranges, subDomainKeyTreeHandler->h_range);
 
        boost::mpi::communicator comm;
        sumParticles = numParticlesLocal;
        all_reduce(comm, boost::mpi::inplace_t<integer*>(&sumParticles), 1, std::plus<integer>());
 
        profiler.value2file(ProfilerIds::numParticles, sumParticles);
        profiler.value2file(ProfilerIds::numParticlesLocal, numParticlesLocal);
 
    }
 
    //Logger(INFO) << "checking for nans after update()...";
    //ParticlesNS::Kernel::Launch::check4nans(particleHandler->d_particles, numParticlesLocal);
 
 
 
}