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Raise error when autotune_with_torch_compile_fusion is set without torch_compile_fusion #1951

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Raise error when autotune_with_torch_compile_fusion is set without torch_compile_fusion #1951

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37da98b
Raise error when autotune_with_torch_compile_fusion is set without to…
yf225 Apr 4, 2026
00c8fb9
Simplify error message for fusion autotune without fusion
yf225 Apr 4, 2026
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7 changes: 7 additions & 0 deletions helion/exc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -310,6 +310,13 @@ class IncompatibleInterpretModes(BaseError):
message = "TRITON_INTERPRET=1 and HELION_INTERPRET=1 cannot be used together. Please use only one of these debug modes at a time."


class FusionAutotuneRequiresTorchCompileFusion(BaseError):
location_suffix = ""
message = (
"autotune_with_torch_compile_fusion=True requires torch_compile_fusion=True."
)


class MissingEnableTile(BaseError):
message = (
"HELION_BACKEND=tileir requires the Triton TileIR driver to be active. "
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3 changes: 3 additions & 0 deletions helion/runtime/settings.py
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Expand Up @@ -677,6 +677,9 @@ def __init__(self, **settings: object) -> None:
if self.backend == "tileir" and os.environ.get("ENABLE_TILE", "0") != "1":
raise exc.MissingEnableTile

if self.autotune_with_torch_compile_fusion and not self.torch_compile_fusion:
raise exc.FusionAutotuneRequiresTorchCompileFusion

self._check_ref_eager_mode_before_print_output_code()

def to_dict(self) -> dict[str, object]:
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