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bug[next]: Fix codegen in gtfn for unused vertical offset provider #1746

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bug[next]: Fix codegen in gtfn for unused vertical offset provider #1746

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7fbf5ad
small kdim fix
nfarabullini Nov 25, 2024
1714fb8
added execution test
nfarabullini Nov 25, 2024
e42ab70
Merge branch 'main' into koff_small_fix
nfarabullini Nov 25, 2024
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3 changes: 3 additions & 0 deletions src/gt4py/next/program_processors/codegens/gtfn/itir_to_gtfn_ir.py
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Original file line number Diff line number Diff line change
Expand Up @@ -198,6 +198,9 @@ def _collect_offset_definitions(
"Mapping an offset to a horizontal dimension in unstructured is not allowed."
)
# create alias from vertical offset to vertical dimension
offset_definitions[dim.value] = TagDefinition(
name=Sym(id=dim.value), alias=_vertical_dimension
)
offset_definitions[offset_name] = TagDefinition(
name=Sym(id=offset_name), alias=SymRef(id=dim.value)
)
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2 changes: 2 additions & 0 deletions tests/next_tests/integration_tests/feature_tests/ffront_tests/ffront_test_utils.py
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Expand Up @@ -229,6 +229,7 @@ def simple_mesh() -> MeshDescriptor:
C2E.value: gtx.NeighborTableOffsetProvider(
c2e_arr, Cell, Edge, 4, has_skip_values=False
),
Koff.value: KDim,
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@havogt havogt Nov 25, 2024 •
edited
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Why is this change here? I don't understand how this is related. Is it required to make the test below fail before the fix?

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This is an easy way to trigger the error.

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But not the best I guess. An isolated test would be one that has an Cartesian offset for a dimension that is not in any field?

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any updates on this? I would need it for C2SM/icon4py#564

},
)

Expand Down Expand Up @@ -305,6 +306,7 @@ def skip_value_mesh() -> MeshDescriptor:
C2E.value: gtx.NeighborTableOffsetProvider(
c2e_arr, Cell, Edge, 3, has_skip_values=False
),
Koff.value: KDim,
},
)

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15 changes: 14 additions & 1 deletion tests/next_tests/integration_tests/feature_tests/ffront_tests/test_execution.py
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Expand Up @@ -81,7 +81,7 @@ def testee(a: cases.IJKField) -> cases.IJKField:


@pytest.mark.uses_unstructured_shift
def test_unstructured_shift(unstructured_case):
def test_unstructured_shift_indexed(unstructured_case):
@gtx.field_operator
def testee(a: cases.VField) -> cases.EField:
return a(E2V[0])
Expand All @@ -93,6 +93,19 @@ def testee(a: cases.VField) -> cases.EField:
)


@pytest.mark.uses_unstructured_shift
def test_unstructured_shift(unstructured_case):
@gtx.field_operator
def testee(a: cases.VField) -> cases.EField:
return neighbor_sum(a(E2V), axis=E2VDim)

cases.verify_with_default_data(
unstructured_case,
testee,
ref=lambda a: np.sum(a[unstructured_case.offset_provider["E2V"].table], axis=1),
)


@pytest.mark.uses_unstructured_shift
def test_composed_unstructured_shift(unstructured_case):
@gtx.field_operator
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