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Correctly compute the scaling factor for the equations in parallel.

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When running parallel one cannot use Eigen::Array::mean() for this
as the it is just a local part of the complete array. With this commit
we correctly compute the number of global cells in the grid and use this
together with a parallel reduction to compute a global mean value.
This commit is contained in:
Markus Blatt
2015-10-27 00:29:22 +01:00
parent fe1ba16e40
commit e555cd45f1
3 changed files with 36 additions and 5 deletions
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2
opm/autodiff/BlackoilModelBase.hpp
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@@ -280,6 +280,8 @@ namespace Opm {
/// \brief Whether we print something to std::cout /// \brief Whether we print something to std::cout
bool terminal_output_; bool terminal_output_;
/// \brief The number of cells of the global grid.
int global_nc_;
std::vector<int> primalVariable_; std::vector<int> primalVariable_;
V pvdt_; V pvdt_;

24
opm/autodiff/BlackoilModelBase_impl.hpp
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@@ -194,13 +194,16 @@ namespace detail {
int local_number_of_wells = wells_ ? wells_->number_of_wells : 0; int local_number_of_wells = wells_ ? wells_->number_of_wells : 0;
int global_number_of_wells = info.communicator().sum(local_number_of_wells); int global_number_of_wells = info.communicator().sum(local_number_of_wells);
wells_active_ = ( wells_ && global_number_of_wells > 0 ); wells_active_ = ( wells_ && global_number_of_wells > 0 );
// Compute the global number of cells
std::vector<int> v( Opm::AutoDiffGrid::numCells(grid_), 1);
global_nc_ = 0;
info.computeReduction(v, Opm::Reduction::makeGlobalSumFunctor<int>(), global_nc_);
}else }else
#endif
{ {
wells_active_ = ( wells_ && wells_->number_of_wells > 0 ); wells_active_ = ( wells_ && wells_->number_of_wells > 0 );
global_nc_ = Opm::AutoDiffGrid::numCells(grid_);
} }
#else
wells_active_ = ( wells_ && wells_->number_of_wells > 0 );
#endif
} }
@@ -969,7 +972,20 @@ namespace detail {
const int pos = pu.phase_pos[idx]; const int pos = pu.phase_pos[idx];
const ADB& temp_b = rq_[pos].b; const ADB& temp_b = rq_[pos].b;
B = 1. / temp_b.value(); B = 1. / temp_b.value();
residual_.matbalscale[idx] = B.mean(); #if HAVE_MPI
if ( linsolver_.parallelInformation().type() == typeid(ParallelISTLInformation) )
{
const ParallelISTLInformation& real_info =
boost::any_cast<const ParallelISTLInformation&>(linsolver_.parallelInformation());
double B_global_sum = 0;
real_info.computeReduction(B, Reduction::makeGlobalSumFunctor<double>(), B_global_sum);
residual_.matbalscale[idx] = B_global_sum / global_nc_;
}
else
#endif
{
residual_.matbalscale[idx] = B.mean();
}
} }
} }
} }

15
opm/autodiff/BlackoilSolventModel_impl.hpp
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@@ -237,7 +237,20 @@ namespace Opm {
if (has_solvent_) { if (has_solvent_) {
const ADB& temp_b = rq_[solvent_pos_].b; const ADB& temp_b = rq_[solvent_pos_].b;
ADB::V B = 1. / temp_b.value(); ADB::V B = 1. / temp_b.value();
residual_.matbalscale[solvent_pos_] = B.mean(); #if HAVE_MPI
if ( linsolver_.parallelInformation().type() == typeid(ParallelISTLInformation) )
{
const ParallelISTLInformation& real_info =
boost::any_cast<const ParallelISTLInformation&>(linsolver_.parallelInformation());
double B_global_sum = 0;
real_info.computeReduction(B, Reduction::makeGlobalSumFunctor<double>(), B_global_sum);
residual_.matbalscale[idx] = B_global_sum / global_nc_;
}
else
#endif
{
residual_.matbalscale[idx] = B.mean();
}
} }
} }