void updateState(const V& dx,
ReservoirState& reservoir_state,
WellState& well_state)
{
// Naively, rs and rv can get overwritten, so we
// avoid that by storing.
std::vector<double> rs_old = reservoir_state.gasoilratio();
std::vector<double> rv_old = reservoir_state.rv();
auto hs_old = reservoir_state.hydroCarbonState();
auto phasecond_old = Base::phaseCondition_;
auto isRs_old = Base::isRs_;
auto isRv_old = Base::isRv_;
auto isSg_old = Base::isSg_;
// Compute the pressure range.
const auto minmax_iters = std::minmax_element(reservoir_state.pressure().begin(),
reservoir_state.pressure().end());
const double range = *minmax_iters.second - *minmax_iters.first;
// Use the base class' updateState().
Base::updateState(dx, reservoir_state, well_state);
// Compute relative change.
max_dp_rel_ = dx.head(reservoir_state.pressure().size()).abs().maxCoeff() / range;
// Restore rs and rv, also various state flags.
reservoir_state.gasoilratio() = rs_old;
reservoir_state.rv() = rv_old;
reservoir_state.hydroCarbonState() = hs_old;
Base::phaseCondition_ = phasecond_old;
Base::isRs_ = isRs_old;
Base::isRv_ = isRv_old;
Base::isSg_ = isSg_old;
}
SimulatorReport SimulatorBase<Implementation>::run(SimulatorTimer& timer,
ReservoirState& state)
{
WellState prev_well_state;
// Create timers and file for writing timing info.
Opm::time::StopWatch solver_timer;
double stime = 0.0;
Opm::time::StopWatch step_timer;
Opm::time::StopWatch total_timer;
total_timer.start();
std::string tstep_filename = output_writer_.outputDirectory() + "/step_timing.txt";
std::ofstream tstep_os(tstep_filename.c_str());
// adaptive time stepping
std::unique_ptr< AdaptiveTimeStepping > adaptiveTimeStepping;
if( param_.getDefault("timestep.adaptive", true ) )
{
adaptiveTimeStepping.reset( new AdaptiveTimeStepping( param_, solver_.parallelInformation() ) );
}
// init output writer
output_writer_.writeInit( timer );
std::string restorefilename = param_.getDefault("restorefile", std::string("") );
if( ! restorefilename.empty() )
{
// -1 means that we'll take the last report step that was written
const int desiredRestoreStep = param_.getDefault("restorestep", int(-1) );
output_writer_.restore( timer, state, prev_well_state, restorefilename, desiredRestoreStep );
}
unsigned int totalNewtonIterations = 0;
unsigned int totalLinearIterations = 0;
// Main simulation loop.
while (!timer.done()) {
// Report timestep.
step_timer.start();
if ( terminal_output_ )
{
timer.report(std::cout);
}
// Create wells and well state.
WellsManager wells_manager(eclipse_state_,
timer.currentStepNum(),
Opm::UgGridHelpers::numCells(grid_),
Opm::UgGridHelpers::globalCell(grid_),
Opm::UgGridHelpers::cartDims(grid_),
Opm::UgGridHelpers::dimensions(grid_),
Opm::UgGridHelpers::cell2Faces(grid_),
Opm::UgGridHelpers::beginFaceCentroids(grid_),
props_.permeability(),
is_parallel_run_);
const Wells* wells = wells_manager.c_wells();
WellState well_state;
well_state.init(wells, state, prev_well_state);
// give the polymer and surfactant simulators the chance to do their stuff
asImpl().handleAdditionalWellInflow(timer, wells_manager, well_state, wells);
// write simulation state at the report stage
output_writer_.writeTimeStep( timer, state, well_state );
// Max oil saturation (for VPPARS), hysteresis update.
props_.updateSatOilMax(state.saturation());
props_.updateSatHyst(state.saturation(), allcells_);
// Compute reservoir volumes for RESV controls.
asImpl().computeRESV(timer.currentStepNum(), wells, state, well_state);
// Run a multiple steps of the solver depending on the time step control.
solver_timer.start();
auto solver = asImpl().createSolver(wells);
// If sub stepping is enabled allow the solver to sub cycle
// in case the report steps are too large for the solver to converge
//
// \Note: The report steps are met in any case
// \Note: The sub stepping will require a copy of the state variables
if( adaptiveTimeStepping ) {
adaptiveTimeStepping->step( timer, *solver, state, well_state, output_writer_ );
}
else {
// solve for complete report step
solver->step(timer.currentStepLength(), state, well_state);
}
// take time that was used to solve system for this reportStep
solver_timer.stop();
// accumulate the number of Newton and Linear Iterations
totalNewtonIterations += solver->newtonIterations();
totalLinearIterations += solver->linearIterations();
// Report timing.
const double st = solver_timer.secsSinceStart();
if ( terminal_output_ )
{
std::cout << "Fully implicit solver took: " << st << " seconds." << std::endl;
}
stime += st;
if ( output_writer_.output() ) {
SimulatorReport step_report;
step_report.pressure_time = st;
step_report.total_time = step_timer.secsSinceStart();
step_report.reportParam(tstep_os);
}
// Increment timer, remember well state.
++timer;
prev_well_state = well_state;
}
// Write final simulation state.
output_writer_.writeTimeStep( timer, state, prev_well_state );
// Stop timer and create timing report
total_timer.stop();
SimulatorReport report;
report.pressure_time = stime;
report.transport_time = 0.0;
report.total_time = total_timer.secsSinceStart();
report.total_newton_iterations = totalNewtonIterations;
report.total_linear_iterations = totalLinearIterations;
return report;
}
SimulatorReport SimulatorBase<Implementation>::run(SimulatorTimer& timer,
ReservoirState& state)
{
WellState prev_well_state;
if (output_writer_.isRestart()) {
// This is a restart, populate WellState and ReservoirState state objects from restart file
output_writer_.initFromRestartFile(props_.phaseUsage(), props_.permeability(), grid_, state, prev_well_state);
}
// Create timers and file for writing timing info.
Opm::time::StopWatch solver_timer;
double stime = 0.0;
Opm::time::StopWatch step_timer;
Opm::time::StopWatch total_timer;
total_timer.start();
std::string tstep_filename = output_writer_.outputDirectory() + "/step_timing.txt";
std::ofstream tstep_os(tstep_filename.c_str());
const auto& schedule = eclipse_state_->getSchedule();
const auto& events = schedule->getEvents();
// adaptive time stepping
std::unique_ptr< AdaptiveTimeStepping > adaptiveTimeStepping;
if( param_.getDefault("timestep.adaptive", true ) )
{
adaptiveTimeStepping.reset( new AdaptiveTimeStepping( param_, terminal_output_ ) );
}
// init output writer
output_writer_.writeInit( timer );
std::string restorefilename = param_.getDefault("restorefile", std::string("") );
if( ! restorefilename.empty() )
{
// -1 means that we'll take the last report step that was written
const int desiredRestoreStep = param_.getDefault("restorestep", int(-1) );
output_writer_.restore( timer, state, prev_well_state, restorefilename, desiredRestoreStep );
}
unsigned int totalNonlinearIterations = 0;
unsigned int totalLinearIterations = 0;
bool is_well_potentials_computed = param_.getDefault("compute_well_potentials", false );
std::vector<double> well_potentials;
// Main simulation loop.
while (!timer.done()) {
// Report timestep.
step_timer.start();
if ( terminal_output_ )
{
timer.report(std::cout);
}
// Create wells and well state.
WellsManager wells_manager(eclipse_state_,
timer.currentStepNum(),
Opm::UgGridHelpers::numCells(grid_),
Opm::UgGridHelpers::globalCell(grid_),
Opm::UgGridHelpers::cartDims(grid_),
Opm::UgGridHelpers::dimensions(grid_),
Opm::UgGridHelpers::cell2Faces(grid_),
Opm::UgGridHelpers::beginFaceCentroids(grid_),
props_.permeability(),
is_parallel_run_,
well_potentials);
const Wells* wells = wells_manager.c_wells();
WellState well_state;
well_state.init(wells, state, prev_well_state);
// give the polymer and surfactant simulators the chance to do their stuff
asImpl().handleAdditionalWellInflow(timer, wells_manager, well_state, wells);
// write simulation state at the report stage
output_writer_.writeTimeStep( timer, state, well_state );
// Max oil saturation (for VPPARS), hysteresis update.
props_.updateSatOilMax(state.saturation());
props_.updateSatHyst(state.saturation(), allcells_);
// Compute reservoir volumes for RESV controls.
asImpl().computeRESV(timer.currentStepNum(), wells, state, well_state);
// Run a multiple steps of the solver depending on the time step control.
solver_timer.start();
auto solver = asImpl().createSolver(wells);
// If sub stepping is enabled allow the solver to sub cycle
// in case the report steps are too large for the solver to converge
//
// \Note: The report steps are met in any case
// \Note: The sub stepping will require a copy of the state variables
if( adaptiveTimeStepping ) {
adaptiveTimeStepping->step( timer, *solver, state, well_state, output_writer_ );
}
else {
// solve for complete report step
solver->step(timer.currentStepLength(), state, well_state);
}
// update the derived geology (transmissibilities, pore volumes, etc) if the
// has geology changed for the next report step
const int nextTimeStepIdx = timer.currentStepNum() + 1;
if (nextTimeStepIdx < timer.numSteps()
&& events.hasEvent(ScheduleEvents::GEO_MODIFIER, nextTimeStepIdx)) {
// bring the contents of the keywords to the current state of the SCHEDULE
// section
//
// TODO (?): handle the parallel case (maybe this works out of the box)
DeckConstPtr miniDeck = schedule->getModifierDeck(nextTimeStepIdx);
eclipse_state_->applyModifierDeck(miniDeck);
geo_.update(grid_, props_, eclipse_state_, gravity_);
}
// take time that was used to solve system for this reportStep
solver_timer.stop();
// accumulate the number of nonlinear and linear Iterations
totalNonlinearIterations += solver->nonlinearIterations();
totalLinearIterations += solver->linearIterations();
// Report timing.
const double st = solver_timer.secsSinceStart();
// accumulate total time
stime += st;
if ( terminal_output_ )
{
std::cout << "Fully implicit solver took: " << st << " seconds. Total solver time taken: " << stime << " seconds." << std::endl;
}
if ( output_writer_.output() ) {
SimulatorReport step_report;
step_report.pressure_time = st;
step_report.total_time = step_timer.secsSinceStart();
step_report.reportParam(tstep_os);
}
// Increment timer, remember well state.
++timer;
prev_well_state = well_state;
// The well potentials are only computed if they are needed
// For now thay are only used to determine default guide rates for group controlled wells
if ( is_well_potentials_computed ) {
asImpl().computeWellPotentials(wells, well_state, well_potentials);
}
}
// Write final simulation state.
output_writer_.writeTimeStep( timer, state, prev_well_state );
// Stop timer and create timing report
total_timer.stop();
SimulatorReport report;
report.pressure_time = stime;
report.transport_time = 0.0;
report.total_time = total_timer.secsSinceStart();
report.total_newton_iterations = totalNonlinearIterations;
report.total_linear_iterations = totalLinearIterations;
return report;
}