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https://github.com/OPM/opm-simulators.git
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ed77c90238
This commit switches the current implementation of
'partitionCellsZoltan()', i.e., 'partitionCells("zoltan", ...)' into
using the MPI-aware ParallelNLDDPartitioningZoltan utility. In
doing so we make 'partitionCellsZoltan()' private since its
availability is not guaranteed. We also slightly reorder the
parameters and switch from passing a "Grid" into passing a
"GridView" as an argument to partitionCells(), and specialise this
function for the known grid views in OPM Flow.
We extract the Zoltan-related parameters out to an Entity-dependent
helper structure and move the complexity of forming this type to a
new helper function, BlackoilModelEbosNldd::partitionCells().
108 lines
4.1 KiB
C++
108 lines
4.1 KiB
C++
/*
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Copyright 2021 Total SE
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPM_ASPINPARTITION_HEADER_INCLUDED
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#define OPM_ASPINPARTITION_HEADER_INCLUDED
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#include <functional>
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#include <string>
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#include <utility>
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#include <vector>
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namespace Opm {
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class Well;
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} // namespace Opm
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namespace Opm {
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/// Control parameters for on-rank subdomain partitioning using Zoltan library.
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///
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/// \tparam Element Grid view entity type
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template <typename Element>
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struct ZoltanPartitioningControl
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{
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/// Partition imbalance, percentage units. Assumed to be the run's
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/// value of ZoltanImbalanceTol.
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double domain_imbalance{1.03};
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/// Compute a locally unique, for this MPI process, ID of a local
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/// cell/element/entity.
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std::function<int(const Element&)> index;
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/// Compute a globally unique, across all MPI processes, ID for a local
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/// cell/element/entity. Might for instance return the cell's
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/// linearised index
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///
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/// i + nx*(j + ny*k)
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///
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/// of the Cartesian cell (i,j,k).
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std::function<int(int)> local_to_global;
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};
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/// Partition rank's interior cells.
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///
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/// \param[in] method Partitioning method. Supported values are \c
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/// "zoltan", \c "simple", or a filename with the extension \c
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/// ".partition". The \c "zoltan" method invokes the Zoltan graph
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/// partitioning package and requires both MPI and an active Zoltan
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/// library. The \c "simple" method uses a one-dimensional load-balanced
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/// approach, and the filename method will read a precomputed partition
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/// vector from the named file.
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///
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/// \param[in] num_local_domains Number of subdomains. Not used when
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/// explicit partitioning is input from a file.
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///
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/// \param[in] comm MPI Communication object for exchanging globally unique
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/// cell IDs and for communication within the Zoltan library. Not used
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/// unless \code method == "zoltan" \endcode.
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///
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/// \param[in] grid_view View of rank's cells, both interior and overlap
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/// cells. Not used unless \code method == "zoltan" \endcode.
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///
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/// \param[in] wells Collection of simulation model wells. Not used unless
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/// \code method == "zoltan" \endcode.
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///
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/// \param[in] zoltan_ctrl Control parameters for local Zoltan-based
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/// partitioning. Not used unless \code method == "zoltan" \endcode.
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///
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/// \return Partition vector--subdomain ID for each cell in \p grid_view
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/// traversal order for its interior cells--and the number of subdomains
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/// on current rank.
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template <class GridView, class Element>
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std::pair<std::vector<int>, int>
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partitionCells(const std::string& method,
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const int num_local_domains,
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const GridView& grid_view,
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const std::vector<Well>& wells,
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const ZoltanPartitioningControl<Element>& zoltan_ctrl);
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/// Read a partitioning from file, assumed to contain one number per cell, its partition number.
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/// \return pair containing a partition vector (partition number for each cell), and the number of partitions.
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std::pair<std::vector<int>, int> partitionCellsFromFile(const std::string& filename, const int num_cells);
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/// Trivially simple partitioner assigning partitions en bloc, consecutively by cell index.
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/// \return pair containing a partition vector (partition number for each cell), and the number of partitions.
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std::pair<std::vector<int>, int> partitionCellsSimple(const int num_cells, const int num_domains);
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} // namespace Opm
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#endif // OPM_ASPINPARTITION_HEADER_INCLUDED
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