Add broken cuda test

.buildkite/pipeline.yml

@@ -651,7 +651,18 @@ steps:
           CLIMACOMMS_DEVICE: "CUDA"
         agents:
           slurm_gpus: 1
-
+
+      - label: "Unit: operators on levels and extruded spaces"
+        key: unit_cuda_operators_example
+        command: "julia --color=yes --check-bounds=yes --project=.buildkite test/Operators/unit_operators_examples.jl"
+        command:
+          - "julia --project=.buildkite -e 'using CUDA; CUDA.versioninfo()'"
+          - "julia --color=yes --check-bounds=yes --project=.buildkite test/Operators/unit_operators_examples.jl"
+        env:
+          CLIMACOMMS_DEVICE: "CUDA"
+        agents:
+          slurm_gpus: 1
+
       - label: "Unit: velocity grad tensor ops"
         key: unit_spectral_tensor_op_cuda
         command: "julia --color=yes --check-bounds=yes --project=.buildkite test/Operators/spectralelement/covar_deriv_ops.jl"

test/Operators/unit_operators_examples.jl

@@ -0,0 +1,77 @@
+import ClimaCore:
+    Domains,
+    Meshes,
+    Geometry,
+    Grids,
+    Spaces,
+    Topologies,
+    Hypsography,
+    Fields,
+    Operators,
+    Utilities
+import ClimaComms
+
+ClimaComms.@import_required_backends
+device = ClimaComms.device()
+comms_ctx = ClimaComms.context(device)
+
+h_domain = Domains.RectangleDomain(
+    Domains.IntervalDomain(
+        Geometry.XPoint(0.0),
+        Geometry.XPoint(1.0);
+        periodic = true,
+    ),
+    Domains.IntervalDomain(
+        Geometry.YPoint(0.0),
+        Geometry.YPoint(1.0);
+        periodic = true,
+    ),
+)
+h_mesh = Meshes.RectilinearMesh(h_domain, 10, 10)
+h_grid = Spaces.grid(
+    Spaces.SpectralElementSpace2D(
+        Topologies.DistributedTopology2D(
+            comms_ctx,
+            h_mesh,
+            Topologies.spacefillingcurve(h_mesh),
+        ),
+        Spaces.Quadratures.GLL{4}(),
+    ),
+)
+z_domain = Domains.IntervalDomain(
+    Geometry.ZPoint(0.0),
+    Geometry.ZPoint(1.0);
+    boundary_names = (:bottom, :top),
+)
+z_grid = Grids.FiniteDifferenceGrid(
+    Topologies.IntervalTopology(
+        comms_ctx,
+        Meshes.IntervalMesh(z_domain, Meshes.Uniform(); nelems = 10),
+    ),
+)
+grid = Grids.ExtrudedFiniteDifferenceGrid(
+    h_grid,
+    z_grid,
+    Hypsography.Flat();
+    deep = false,
+)
+center_space = Spaces.CenterExtrudedFiniteDifferenceSpace(grid)
+face_space = Spaces.FaceExtrudedFiniteDifferenceSpace(grid)
+
+# Create fields and show that it fails
+ᶜgradᵥ = Operators.GradientF2C()
+
+level_field = Fields.level(Fields.Field(Float64, face_space), Utilities.half)
+ᶠscalar_field = Fields.Field(Float64, face_space)
+# Does not work:
+using Test
+
+@testset "Broken broadcast expression on GPUs" begin
+    if device isa ClimaComms.CUDADevice
+        @test_broken begin
+            @. ᶜgradᵥ(level_field + ᶠscalar_field)
+        end
+    else
+        @. ᶜgradᵥ(level_field + ᶠscalar_field)
+    end
+end