diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f4580c04c..00e7a8ba7 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -12,23 +12,8 @@ jobs:
     container: ghcr.io/gridtools/gridtools-base:${{ matrix.compiler }}
     strategy:
         matrix:
-            compiler: [gcc-8, gcc-9, gcc-10, gcc-11, gcc-12, gcc-13, clang-11, clang-12, clang-13, clang-14, clang-15, clang-16, clang-14-cuda-11, gcc-10-cuda-11.8, gcc-11-cuda-12.0, gcc-12-cuda-12.3, gcc-12-cuda-12.4, base-rocm-6.2.2, gcc-10-hpx, nvhpc-23.3, nvhpc-23.9]
-            build_type: [debug, release]
-            exclude:
-              - compiler: gcc-8
-                build_type: debug
-              - compiler: gcc-9
-                build_type: debug
-              - compiler: gcc-10
-                build_type: debug
-              - compiler: gcc-11
-                build_type: debug
-              - compiler: clang-13
-                build_type: debug
-              - compiler: clang-14
-                build_type: debug
-              - compiler: gcc-10-hpx
-                build_type: debug
+            compiler: [gcc-13, clang-16, clang-14-cuda-11, gcc-12-cuda-12.4, base-rocm-6.2.2, gcc-10-hpx, nvhpc-23.9]
+            build_type: [release]
     steps:
     - uses: actions/checkout@v2
     - name: setup environment
@@ -38,7 +23,7 @@ jobs:
         echo "OMP_NUM_THREADS=$(nproc)" >> $GITHUB_ENV
     - name: build
       run: |
-        python3 pyutils/driver.py -vv build -b ${{ matrix.build_type }} -o $(pwd)/build -i $(pwd)/install -t perftests
+        python3 pyutils/driver.py -vv build -b ${{ matrix.build_type }} -o $(pwd)/build -i $(pwd)/install
     - name: run tests
       # no GPUs available -> no tests (for nvhpc we could run cpu, but we currently don't expose that option in pyutils/driver.py)
       if: (!contains(matrix.compiler, 'cuda') && !contains(matrix.compiler, 'rocm') && !contains(matrix.compiler, 'nvhpc'))
diff --git a/tests/regression/icosahedral/curl.cpp b/tests/regression/icosahedral/curl.cpp
index 002b774d7..48275c0e7 100644
--- a/tests/regression/icosahedral/curl.cpp
+++ b/tests/regression/icosahedral/curl.cpp
@@ -41,11 +41,11 @@ namespace {
         run(spec,
             stencil_backend_t(),
             TypeParam ::make_grid(),
-            TypeParam ::icosahedral_make_storage(vertices(), repo.dual_area_reciprocal),
-            TypeParam ::icosahedral_make_storage(edges(), repo.dual_edge_length),
-            TypeParam ::icosahedral_make_storage(edges(), repo.u),
+            TypeParam ::icosahedral_make_storage(vertices(), repo.dual_area_reciprocal()),
+            TypeParam ::icosahedral_make_storage(edges(), repo.dual_edge_length()),
+            TypeParam ::icosahedral_make_storage(edges(), repo.u()),
             out);
-        TypeParam::verify(repo.curl_u, out, eq<TypeParam>);
+        TypeParam::verify(repo.curl_u(), out, eq<TypeParam>);
     }
 
     GT_REGRESSION_TEST(curl_flow_convention, icosahedral_test_environment<2>, stencil_backend_t) {
@@ -54,10 +54,10 @@ namespace {
         run_single_stage(curl_functor_flow_convention(),
             stencil_backend_t(),
             TypeParam ::make_grid(),
-            TypeParam ::icosahedral_make_storage(edges(), repo.u),
-            TypeParam ::icosahedral_make_storage(vertices(), repo.dual_area_reciprocal),
-            TypeParam ::icosahedral_make_storage(edges(), repo.dual_edge_length),
+            TypeParam ::icosahedral_make_storage(edges(), repo.u()),
+            TypeParam ::icosahedral_make_storage(vertices(), repo.dual_area_reciprocal()),
+            TypeParam ::icosahedral_make_storage(edges(), repo.dual_edge_length()),
             out);
-        TypeParam ::verify(repo.curl_u, out, eq<TypeParam>);
+        TypeParam ::verify(repo.curl_u(), out, eq<TypeParam>);
     }
 } // namespace
diff --git a/tests/regression/icosahedral/div.cpp b/tests/regression/icosahedral/div.cpp
index bad4c3333..57a36c2b6 100644
--- a/tests/regression/icosahedral/div.cpp
+++ b/tests/regression/icosahedral/div.cpp
@@ -34,11 +34,11 @@ namespace {
         run(spec,
             stencil_backend_t(),
             TypeParam ::make_grid(),
-            TypeParam ::icosahedral_make_storage(edges(), repo.u),
-            TypeParam ::icosahedral_make_storage(edges(), repo.edge_length),
-            TypeParam ::icosahedral_make_storage(cells(), repo.cell_area_reciprocal),
+            TypeParam ::icosahedral_make_storage(edges(), repo.u()),
+            TypeParam ::icosahedral_make_storage(edges(), repo.edge_length()),
+            TypeParam ::icosahedral_make_storage(cells(), repo.cell_area_reciprocal()),
             out);
-        TypeParam ::verify(repo.div_u, out);
+        TypeParam ::verify(repo.div_u(), out);
     }
 
     GT_REGRESSION_TEST(div_flow_convention, icosahedral_test_environment<2>, stencil_backend_t) {
@@ -47,10 +47,10 @@ namespace {
         run_single_stage(div_functor_flow_convention_connectivity(),
             stencil_backend_t(),
             TypeParam::make_grid(),
-            TypeParam ::icosahedral_make_storage(edges(), repo.u),
-            TypeParam ::icosahedral_make_storage(edges(), repo.edge_length),
-            TypeParam ::icosahedral_make_storage(cells(), repo.cell_area_reciprocal),
+            TypeParam ::icosahedral_make_storage(edges(), repo.u()),
+            TypeParam ::icosahedral_make_storage(edges(), repo.edge_length()),
+            TypeParam ::icosahedral_make_storage(cells(), repo.cell_area_reciprocal()),
             out);
-        TypeParam ::verify(repo.div_u, out);
+        TypeParam ::verify(repo.div_u(), out);
     }
 } // namespace
diff --git a/tests/regression/icosahedral/lap.cpp b/tests/regression/icosahedral/lap.cpp
index b953c24a6..4e078c692 100644
--- a/tests/regression/icosahedral/lap.cpp
+++ b/tests/regression/icosahedral/lap.cpp
@@ -81,15 +81,15 @@ namespace {
         run(spec,
             stencil_backend_t(),
             TypeParam::make_grid(),
-            TypeParam::icosahedral_make_storage(edges(), repo.edge_length),
-            TypeParam::icosahedral_make_storage(cells(), repo.cell_area_reciprocal),
-            TypeParam::icosahedral_make_storage(vertices(), repo.dual_area_reciprocal),
-            TypeParam::icosahedral_make_storage(edges(), repo.dual_edge_length),
-            TypeParam::icosahedral_make_storage(edges(), repo.u),
-            TypeParam::icosahedral_make_storage(edges(), repo.dual_edge_length_reciprocal),
-            TypeParam::icosahedral_make_storage(edges(), repo.edge_length_reciprocal),
+            TypeParam::icosahedral_make_storage(edges(), repo.edge_length()),
+            TypeParam::icosahedral_make_storage(cells(), repo.cell_area_reciprocal()),
+            TypeParam::icosahedral_make_storage(vertices(), repo.dual_area_reciprocal()),
+            TypeParam::icosahedral_make_storage(edges(), repo.dual_edge_length()),
+            TypeParam::icosahedral_make_storage(edges(), repo.u()),
+            TypeParam::icosahedral_make_storage(edges(), repo.dual_edge_length_reciprocal()),
+            TypeParam::icosahedral_make_storage(edges(), repo.edge_length_reciprocal()),
             out);
-        TypeParam::verify(TypeParam::icosahedral_make_storage(edges(), repo.lap), out);
+        TypeParam::verify(TypeParam::icosahedral_make_storage(edges(), repo.lap()), out);
     }
 
     GT_REGRESSION_TEST(lap_flow_convention, icosahedral_test_environment<2>, stencil_backend_t) {
@@ -125,14 +125,14 @@ namespace {
         run(spec,
             stencil_backend_t(),
             TypeParam::make_grid(),
-            TypeParam::icosahedral_make_storage(edges(), repo.u),
-            TypeParam::icosahedral_make_storage(edges(), repo.edge_length),
-            TypeParam::icosahedral_make_storage(cells(), repo.cell_area_reciprocal),
-            TypeParam::icosahedral_make_storage(vertices(), repo.dual_area_reciprocal),
-            TypeParam::icosahedral_make_storage(edges(), repo.dual_edge_length),
-            TypeParam::icosahedral_make_storage(edges(), repo.dual_edge_length_reciprocal),
-            TypeParam::icosahedral_make_storage(edges(), repo.edge_length_reciprocal),
+            TypeParam::icosahedral_make_storage(edges(), repo.u()),
+            TypeParam::icosahedral_make_storage(edges(), repo.edge_length()),
+            TypeParam::icosahedral_make_storage(cells(), repo.cell_area_reciprocal()),
+            TypeParam::icosahedral_make_storage(vertices(), repo.dual_area_reciprocal()),
+            TypeParam::icosahedral_make_storage(edges(), repo.dual_edge_length()),
+            TypeParam::icosahedral_make_storage(edges(), repo.dual_edge_length_reciprocal()),
+            TypeParam::icosahedral_make_storage(edges(), repo.edge_length_reciprocal()),
             out);
-        TypeParam::verify(TypeParam::icosahedral_make_storage(edges(), repo.lap), out);
+        TypeParam::verify(TypeParam::icosahedral_make_storage(edges(), repo.lap()), out);
     }
 } // namespace
diff --git a/tests/regression/icosahedral/operators_repository.hpp b/tests/regression/icosahedral/operators_repository.hpp
index 300b5b326..3ef49e57c 100644
--- a/tests/regression/icosahedral/operators_repository.hpp
+++ b/tests/regression/icosahedral/operators_repository.hpp
@@ -12,7 +12,6 @@
 
 #include <cassert>
 #include <cmath>
-#include <functional>
 
 #include <gridtools/common/defs.hpp>
 #include <gridtools/stencil/frontend/icosahedral/location_type.hpp>
@@ -24,8 +23,6 @@ class operators_repository {
     using edges = gridtools::stencil::icosahedral::edges;
     using vertices = gridtools::stencil::icosahedral::vertices;
 
-    using fun_t = std::function<double(int, int, int, int)>;
-
     size_t m_d1, m_d2;
 
     const double PI = std::atan(1) * 4;
@@ -38,70 +35,90 @@ class operators_repository {
     double y(int j) const { return j * 1. / m_d2; }
 
   public:
-    fun_t u = [this](int i, int j, int k, int c) {
-        auto t = PI * (x<edges>(i, c) + 1.5 * y(j));
-        return k + 2 * (2 + cos(t) + sin(2 * t));
-    };
-
-    fun_t edge_length = [this](int i, int j, int, int c) {
-        auto t = PI * (x<edges>(i, c) + 1.5 * y(j));
-        return 2.95 + (2 + cos(t) + sin(2 * t)) / 4;
-    };
-
-    fun_t edge_length_reciprocal = [this](int i, int j, int k, int c) { return 1 / edge_length(i, j, k, c); };
-
-    fun_t cell_area_reciprocal = [this](int i, int j, int, int c) {
-        auto xx = x<cells>(i, c);
-        auto yy = y(j);
-        return 1 / (2.53 + (2 + cos(PI * (1.5 * xx + 2.5 * yy)) + sin(2 * PI * (xx + 1.5 * yy))) / 4);
-    };
-
-    fun_t dual_area_reciprocal = [this](int i, int j, int, int c) {
-        auto xx = x<vertices>(i, c);
-        auto yy = y(j);
-        return 1 / (1.1 + (2 + cos(PI * (1.5 * xx + yy)) + sin(1.5 * PI * (xx + 1.5 * yy))) / 4);
-    };
-
-    fun_t dual_edge_length = [this](int i, int j, int, int c) {
-        auto xx = x<edges>(i, c);
-        auto yy = y(j);
-        return 2.2 + (2 + cos(PI * (xx + 2.5 * yy)) + sin(2 * PI * (xx + 3.5 * yy))) / 4;
-    };
-
-    fun_t dual_edge_length_reciprocal = [this](int i, int j, int k, int c) { return 1 / dual_edge_length(i, j, k, c); };
-
-    fun_t div_u = [this](int i, int j, int k, int c) {
-        double res = 0;
-        int e = 0;
-        for (auto &&neighbour : gridtools::neighbours_of<cells, edges>(i, j, k, c)) {
-            res += (c == 0 ? 1 : -1) * neighbour.call(u) * neighbour.call(edge_length);
-            ++e;
-        }
-        return res * cell_area_reciprocal(i, j, k, c);
-    };
-
-    fun_t curl_u = [this](int i, int j, int k, int c) {
-        double res = 0;
-        int e = 0;
-        for (auto &&neighbour : gridtools::neighbours_of<vertices, edges>(i, j, k, c)) {
-            res += (e % 2 ? 1 : -1) * neighbour.call(u) * neighbour.call(dual_edge_length);
-            ++e;
-        }
-        return res * dual_area_reciprocal(i, j, k, c);
-    };
-
-    fun_t lap = [this](int i, int j, int k, int c) {
-        auto neighbours_ec = gridtools::neighbours_of<edges, cells>(i, j, k, c);
-        assert(neighbours_ec.size() == 2);
-        auto grad_n =
-            (neighbours_ec[1].call(div_u) - neighbours_ec[0].call(div_u)) * dual_edge_length_reciprocal(i, j, k, c);
-
-        auto neighbours_vc = gridtools::neighbours_of<edges, vertices>(i, j, k, c);
-        assert(neighbours_vc.size() == 2);
-        auto grad_tau =
-            (neighbours_vc[1].call(curl_u) - neighbours_vc[0].call(curl_u)) * edge_length_reciprocal(i, j, k, c);
-        return grad_n - grad_tau;
-    };
+    auto u() const {
+        return [this](int i, int j, int k, int c) {
+            auto t = PI * (x<edges>(i, c) + 1.5 * y(j));
+            return k + 2 * (2 + cos(t) + sin(2 * t));
+        };
+    }
+
+    auto edge_length() const {
+        return [this](int i, int j, int, int c) {
+            auto t = PI * (x<edges>(i, c) + 1.5 * y(j));
+            return 2.95 + (2 + cos(t) + sin(2 * t)) / 4;
+        };
+    }
+
+    auto edge_length_reciprocal() const {
+        return [this](int i, int j, int k, int c) { return 1 / edge_length()(i, j, k, c); };
+    }
+
+    auto cell_area_reciprocal() const {
+        return [this](int i, int j, int, int c) {
+            auto xx = x<cells>(i, c);
+            auto yy = y(j);
+            return 1 / (2.53 + (2 + cos(PI * (1.5 * xx + 2.5 * yy)) + sin(2 * PI * (xx + 1.5 * yy))) / 4);
+        };
+    }
+
+    auto dual_area_reciprocal() const {
+        return [this](int i, int j, int, int c) {
+            auto xx = x<vertices>(i, c);
+            auto yy = y(j);
+            return 1 / (1.1 + (2 + cos(PI * (1.5 * xx + yy)) + sin(1.5 * PI * (xx + 1.5 * yy))) / 4);
+        };
+    }
+
+    auto dual_edge_length() const {
+        return [this](int i, int j, int, int c) {
+            auto xx = x<edges>(i, c);
+            auto yy = y(j);
+            return 2.2 + (2 + cos(PI * (xx + 2.5 * yy)) + sin(2 * PI * (xx + 3.5 * yy))) / 4;
+        };
+    }
+
+    auto dual_edge_length_reciprocal() const {
+        return [this](int i, int j, int k, int c) { return 1 / dual_edge_length()(i, j, k, c); };
+    }
+
+    auto div_u() const {
+        return [this](int i, int j, int k, int c) {
+            double res = 0;
+            int e = 0;
+            for (auto &&neighbour : gridtools::neighbours_of<cells, edges>(i, j, k, c)) {
+                res += (c == 0 ? 1 : -1) * neighbour.call(u()) * neighbour.call(edge_length());
+                ++e;
+            }
+            return res * cell_area_reciprocal()(i, j, k, c);
+        };
+    }
+
+    auto curl_u() const {
+        return [this](int i, int j, int k, int c) {
+            double res = 0;
+            int e = 0;
+            for (auto &&neighbour : gridtools::neighbours_of<vertices, edges>(i, j, k, c)) {
+                res += (e % 2 ? 1 : -1) * neighbour.call(u()) * neighbour.call(dual_edge_length());
+                ++e;
+            }
+            return res * dual_area_reciprocal()(i, j, k, c);
+        };
+    }
+
+    auto lap() const {
+        return [this](int i, int j, int k, int c) {
+            auto neighbours_ec = gridtools::neighbours_of<edges, cells>(i, j, k, c);
+            assert(neighbours_ec.size() == 2);
+            auto grad_n = (neighbours_ec[1].call(div_u()) - neighbours_ec[0].call(div_u())) *
+                          dual_edge_length_reciprocal()(i, j, k, c);
+
+            auto neighbours_vc = gridtools::neighbours_of<edges, vertices>(i, j, k, c);
+            assert(neighbours_vc.size() == 2);
+            auto grad_tau = (neighbours_vc[1].call(curl_u()) - neighbours_vc[0].call(curl_u())) *
+                            edge_length_reciprocal()(i, j, k, c);
+            return grad_n - grad_tau;
+        };
+    }
 
     operators_repository(size_t d1, size_t d2) : m_d1(d1), m_d2(d2) {}
 };
diff --git a/tests/unit_tests/common/test_int_vector.cpp b/tests/unit_tests/common/test_int_vector.cpp
index 63d560886..93a0dcc05 100644
--- a/tests/unit_tests/common/test_int_vector.cpp
+++ b/tests/unit_tests/common/test_int_vector.cpp
@@ -97,7 +97,9 @@ namespace gridtools {
             auto testee = int_vector::multiply(vec, 2_c);
 
             using testee_t = decltype(testee);
+#ifndef __NVCC__
             static_assert(element_at<a, testee_t>::value == 2);
+#endif
             EXPECT_EQ(4, at_key<b>(testee));
         }
 
@@ -109,7 +111,9 @@ namespace gridtools {
             EXPECT_EQ(1, at_key<a>(testee));
             using testee_t = decltype(testee);
             static_assert(!has_key<testee_t, b>());
+#ifndef __NVCC__
             static_assert(element_at<c, testee_t>::value == 2);
+#endif
         }
 
         TEST(unary_ops, smoke) {
@@ -121,14 +125,18 @@ namespace gridtools {
 
             EXPECT_EQ(-1, at_key<a>(testee));
             using testee_t = decltype(testee);
+#ifndef __NVCC__
             static_assert(element_at<b, testee_t>::value == 0);
             static_assert(element_at<c, testee_t>::value == -2);
+#endif
 
             auto testee2 = +vec;
             EXPECT_EQ(1, at_key<a>(testee2));
             using testee2_t = decltype(testee2);
+#ifndef __NVCC__
             static_assert(element_at<b, testee2_t>::value == 0);
             static_assert(element_at<c, testee2_t>::value == 2);
+#endif
         }
 
         TEST(minus_op, smoke) {
@@ -141,7 +149,9 @@ namespace gridtools {
 
             EXPECT_EQ(0, at_key<a>(testee));
             using testee_t = decltype(testee);
+#ifndef __NVCC__
             static_assert(element_at<b, testee_t>::value == 1);
+#endif
             EXPECT_EQ(-3, at_key<c>(testee));
         }
     } // namespace