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Merge pull request #4738 from akva2/blackoilmodelebos_domain_ordering

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BlackoilModelEbos: improve domain ordering
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Bård Skaflestad 2023-07-03 14:52:12 +02:00 committed by GitHub
commit cc0b994eca
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3 changed files with 93 additions and 49 deletions
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105
opm/simulators/flow/BlackoilModelEbos.hpp
View File

@ -534,52 +534,7 @@ namespace Opm {
auto locally_solved = initial_solution;
// ----------- Decide on an ordering for the domains -----------
std::vector<int> domain_order(domains_.size());
if (param_.local_solve_approach_ == "gauss-seidel") {
// TODO: enable flexibility and choice in choosing domain ordering approach.
if (true) {
// Use average pressures to order domains.
std::vector<std::pair<double, int>> avgpress_per_domain(domains_.size());
for (const auto& domain : domains_) {
double press_sum = 0.0;
for (const int c : domain.cells) {
press_sum += solution[c][Indices::pressureSwitchIdx];
}
const double avgpress = press_sum / domain.cells.size();
avgpress_per_domain[domain.index] = std::make_pair(avgpress, domain.index);
}
// Lexicographical sort by pressure, then index.
std::sort(avgpress_per_domain.begin(), avgpress_per_domain.end());
// Reverse since we want high-pressure regions solved first.
std::reverse(avgpress_per_domain.begin(), avgpress_per_domain.end());
for (size_t ii = 0; ii < domains_.size(); ++ii) {
domain_order[ii] = avgpress_per_domain[ii].second;
}
} else {
// Use maximum residual to order domains.
const auto& residual = ebosSimulator_.model().linearizer().residual();
const int num_vars = residual[0].size();
std::vector<std::pair<double, int>> maxres_per_domain(domains_.size());
for (const auto& domain : domains_) {
double maxres = 0.0;
for (const int c : domain.cells) {
for (int ii = 0; ii < num_vars; ++ii) {
maxres = std::max(maxres, std::fabs(residual[c][ii]));
}
}
maxres_per_domain[domain.index] = std::make_pair(maxres, domain.index);
}
// Lexicographical sort by pressure, then index.
std::sort(maxres_per_domain.begin(), maxres_per_domain.end());
// Reverse since we want high-pressure regions solved first.
std::reverse(maxres_per_domain.begin(), maxres_per_domain.end());
for (size_t ii = 0; ii < domains_.size(); ++ii) {
domain_order[ii] = maxres_per_domain[ii].second;
}
}
} else {
std::iota(domain_order.begin(), domain_order.end(), 0);
}
const auto domain_order = this->getSubdomainOrder();
// ----------- Solve each domain separately -----------
std::vector<SimulatorReportSingle> domain_reports(domains_.size());
@ -1833,6 +1788,64 @@ namespace Opm {
double maxResidualAllowed() const { return param_.max_residual_allowed_; }
double linear_solve_setup_time_;
//! \brief Returns subdomain ordered according to method and ordering measure.
std::vector<int> getSubdomainOrder()
{
const auto& solution = ebosSimulator().model().solution(0);
std::vector<int> domain_order(domains_.size());
if (param_.local_solve_approach_ == "gauss-seidel") {
switch (param_.local_domain_ordering_) {
case DomainOrderingMeasure::AveragePressure: {
// Use average pressures to order domains.
std::vector<std::pair<double, int>> avgpress_per_domain(domains_.size());
for (const auto& domain : domains_) {
double press_sum = 0.0;
for (const int c : domain.cells) {
press_sum += solution[c][Indices::pressureSwitchIdx];
}
const double avgpress = press_sum / domain.cells.size();
avgpress_per_domain[domain.index] = std::make_pair(avgpress, domain.index);
}
// Lexicographical sort by pressure, then index.
std::sort(avgpress_per_domain.begin(), avgpress_per_domain.end());
// Reverse since we want high-pressure regions solved first.
std::reverse(avgpress_per_domain.begin(), avgpress_per_domain.end());
for (size_t ii = 0; ii < domains_.size(); ++ii) {
domain_order[ii] = avgpress_per_domain[ii].second;
}
break;
}
case DomainOrderingMeasure::Residual: {
// Use maximum residual to order domains.
const auto& residual = ebosSimulator().model().linearizer().residual();
const int num_vars = residual[0].size();
std::vector<std::pair<double, int>> maxres_per_domain(domains_.size());
for (const auto& domain : domains_) {
double maxres = 0.0;
for (const int c : domain.cells) {
for (int ii = 0; ii < num_vars; ++ii) {
maxres = std::max(maxres, std::fabs(residual[c][ii]));
}
}
maxres_per_domain[domain.index] = std::make_pair(maxres, domain.index);
}
// Lexicographical sort by pressure, then index.
std::sort(maxres_per_domain.begin(), maxres_per_domain.end());
// Reverse since we want high-pressure regions solved first.
std::reverse(maxres_per_domain.begin(), maxres_per_domain.end());
for (size_t ii = 0; ii < domains_.size(); ++ii) {
domain_order[ii] = maxres_per_domain[ii].second;
}
}
}
} else {
std::iota(domain_order.begin(), domain_order.end(), 0);
}
return domain_order;
}
public:
std::vector<bool> wasSwitched_;
};

29
opm/simulators/flow/BlackoilModelParametersEbos.hpp
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@ -20,9 +20,15 @@
#ifndef OPM_BLACKOILMODELPARAMETERS_EBOS_HEADER_INCLUDED
#define OPM_BLACKOILMODELPARAMETERS_EBOS_HEADER_INCLUDED
#include <opm/models/utils/propertysystem.hh>
#include <opm/models/utils/parametersystem.hh>
#include <opm/models/discretization/common/fvbaseproperties.hh>
#include <opm/models/utils/basicproperties.hh>
#include <opm/models/utils/parametersystem.hh>
#include <opm/models/utils/propertysystem.hh>
#include <opm/simulators/flow/SubDomain.hpp>
#include <stdexcept>
#include <string>
namespace Opm::Properties {
@ -209,6 +215,10 @@ template<class TypeTag, class MyTypeTag>
struct LocalDomainsPartitioningMethod {
using type = UndefinedProperty;
};
template<class TypeTag, class MyTypeTag>
struct LocalDomainsOrderingMeasure {
using type = UndefinedProperty;
};
template<class TypeTag>
struct DbhpMaxRel<TypeTag, TTag::FlowModelParameters> {
using type = GetPropType<TypeTag, Scalar>;
@ -401,6 +411,10 @@ template<class TypeTag>
struct LocalDomainsPartitioningMethod<TypeTag, TTag::FlowModelParameters> {
static constexpr auto value = "zoltan";
};
template<class TypeTag>
struct LocalDomainsOrderingMeasure<TypeTag, TTag::FlowModelParameters> {
static constexpr auto value = "pressure";
};
// if openMP is available, determine the number threads per process automatically.
#if _OPENMP
template<class TypeTag>
@ -535,6 +549,7 @@ namespace Opm
int num_local_domains_{0};
double local_domain_partition_imbalance_{1.03};
std::string local_domain_partition_method_;
DomainOrderingMeasure local_domain_ordering_{DomainOrderingMeasure::AveragePressure};
/// Construct from user parameters or defaults.
BlackoilModelParametersEbos()
@ -582,6 +597,14 @@ namespace Opm
deck_file_name_ = EWOMS_GET_PARAM(TypeTag, std::string, EclDeckFileName);
network_max_strict_iterations_ = EWOMS_GET_PARAM(TypeTag, int, NetworkMaxStrictIterations);
network_max_iterations_ = EWOMS_GET_PARAM(TypeTag, int, NetworkMaxIterations);
std::string measure = EWOMS_GET_PARAM(TypeTag, std::string, LocalDomainsOrderingMeasure);
if (measure == "residual") {
local_domain_ordering_ = DomainOrderingMeasure::Residual;
} else if (measure == "pressure") {
local_domain_ordering_ = DomainOrderingMeasure::AveragePressure;
} else {
throw std::runtime_error("Invalid domain ordering '" + measure + "' specified.");
}
}
static void registerParameters()
@ -631,6 +654,8 @@ namespace Opm
EWOMS_REGISTER_PARAM(TypeTag, Scalar, LocalDomainsPartitioningImbalance, "Subdomain partitioning imbalance tolerance. 1.03 is 3 percent imbalance.");
EWOMS_REGISTER_PARAM(TypeTag, std::string, LocalDomainsPartitioningMethod, "Subdomain partitioning method. "
"Allowed values are 'zoltan', 'simple', and the name of a partition file ending with '.partition'.");
EWOMS_REGISTER_PARAM(TypeTag, std::string, LocalDomainsOrderingMeasure, "Subdomain ordering measure. "
"Allowed values are 'pressure' and 'residual'.");
}
};
} // namespace Opm

6
opm/simulators/flow/SubDomain.hpp
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@ -28,6 +28,12 @@
namespace Opm
{
//! \brief Measure to use for domain ordering.
enum class DomainOrderingMeasure {
AveragePressure,
Residual
};
/// Representing a part of a grid, in a way suitable for performing
/// local solves.
template <class Grid>