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Merge pull request #2898 from blattms/always-accu-to-one-proc-as-default

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Always accumulates data in AMG to 1 process on coarse levels.
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Atgeirr Flø Rasmussen 2020-11-05 15:41:57 +01:00 committed by GitHub
commit adfb8ef771
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2 changed files with 12 additions and 0 deletions
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4
opm/simulators/linalg/PreconditionerFactory.hpp
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@ -134,6 +134,10 @@ private:
criterion.setNoPreSmoothSteps(prm.get<int>("pre_smooth", 1)); criterion.setNoPreSmoothSteps(prm.get<int>("pre_smooth", 1));
criterion.setNoPostSmoothSteps(prm.get<int>("post_smooth", 1)); criterion.setNoPostSmoothSteps(prm.get<int>("post_smooth", 1));
criterion.setDebugLevel(prm.get<int>("verbosity", 0)); criterion.setDebugLevel(prm.get<int>("verbosity", 0));
// As the default we request to accumulate data to 1 process always as our matrix
// graph might be unsymmetric and hence not supported by the PTScotch/ParMetis
// calls in DUNE. Accumulating to 1 skips PTScotch/ParMetis
criterion.setAccumulate(static_cast<Dune::Amg::AccumulationMode>(prm.get<int>("accumulate", 1)));
return criterion; return criterion;
} }

8
opm/simulators/linalg/setupPropertyTree.cpp
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@ -61,6 +61,10 @@ setupCPR(const std::string& conf, const FlowLinearSolverParameters& p)
prm.put("preconditioner.coarsesolver.preconditioner.verbosity", 0); prm.put("preconditioner.coarsesolver.preconditioner.verbosity", 0);
prm.put("preconditioner.coarsesolver.preconditioner.maxlevel", 15); prm.put("preconditioner.coarsesolver.preconditioner.maxlevel", 15);
prm.put("preconditioner.coarsesolver.preconditioner.skip_isolated", 0); prm.put("preconditioner.coarsesolver.preconditioner.skip_isolated", 0);
// We request to accumulate data to 1 process always as our matrix
// graph might be unsymmetric and hence not supported by the PTScotch/ParMetis
// calls in DUNE. Accumulating to 1 skips PTScotch/ParMetis
prm.put("preconditioner.coarsesolver.preconditioner.accumulate", 1);
return prm; return prm;
} }
@ -85,6 +89,10 @@ setupAMG([[maybe_unused]] const std::string& conf, const FlowLinearSolverParamet
prm.put("preconditioner.verbosity", 0); prm.put("preconditioner.verbosity", 0);
prm.put("preconditioner.maxlevel", 15); prm.put("preconditioner.maxlevel", 15);
prm.put("preconditioner.skip_isolated", 0); prm.put("preconditioner.skip_isolated", 0);
// We request to accumulate data to 1 process always as our matrix
// graph might be unsymmetric and hence not supported by the PTScotch/ParMetis
// calls in DUNE. Accumulating to 1 skips PTScotch/ParMetis
prm.put("preconditioner.accumulate", 1);
return prm; return prm;
} }