From a2965d33c65df3fef33321a22a548d5ee125b54e Mon Sep 17 00:00:00 2001
From: Timo Koch <timo.koch@iws.uni-stuttgart.de>
Date: Sun, 19 Feb 2023 13:49:35 +0100
Subject: [PATCH] [solverparams] Make compatible with LSTraits without gridview
information
---
dumux/linear/linearsolverparameters.hh | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/dumux/linear/linearsolverparameters.hh b/dumux/linear/linearsolverparameters.hh
index e588fb414c..2acb5ced21 100644
--- a/dumux/linear/linearsolverparameters.hh
+++ b/dumux/linear/linearsolverparameters.hh
@@ -32,7 +32,16 @@
#include <dune/common/parametertree.hh>
#include <dumux/common/parameters.hh>
+namespace Dumux::Detail::LinearSolverParameters {
+template <typename T>
+using GVDetector = typename T::GridView;
+
+template <typename T>
+constexpr bool hasGridView = Dune::Std::is_detected<GVDetector, T>::value;
+} // end namespace Dumux::Detail::LinearSolverParameters
+
namespace Dumux {
+
/*!
* \ingroup Linear
* \brief Generates a parameter tree required for the linear solvers and precondioners of the Dune ISTL
@@ -65,7 +74,10 @@ public:
params["preconditioner.relaxation"] = "1.0";
params["preconditioner.verbosity"] = "0";
params["preconditioner.defaultAggregationSizeMode"] = "isotropic";
- params["preconditioner.defaultAggregationDimension"] = std::to_string(LinearSolverTraits::GridView::dimension);
+ if constexpr (Detail::LinearSolverParameters::hasGridView<LinearSolverTraits>)
+ params["preconditioner.defaultAggregationDimension"] = std::to_string(LinearSolverTraits::GridView::dimension);
+ else
+ params["preconditioner.defaultAggregationDimension"] = "3";
params["preconditioner.maxLevel"] = "100";
params["ParameterGroup"] = paramGroup;
params["preconditioner.ParameterGroup"] = paramGroup;
--
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