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flydsl: skip unsupported architectures instead of crashing at import #3683

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Merged
mgehre-amd merged 1 commit into from
Jun 12, 2026
Merged

flydsl: skip unsupported architectures instead of crashing at import #3683

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12 changes: 11 additions & 1 deletion aiter/ops/flydsl/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -68,5 +68,15 @@ def get_shared_memory_per_block(device=None, fallback_gfx: str = "") -> int:
return _get_shared_memory_per_block_cached(device, fallback_gfx)


@lru_cache(maxsize=1)
def is_flydsl_available() -> bool:
return importlib.util.find_spec("flydsl") is not None
if importlib.util.find_spec("flydsl") is None:
return False
# flydsl only ships kernels for the architectures in its SMEM_CAPACITY_MAP.
# On other archs (e.g. gfx1100 / RDNA3) importing the kernel modules crashes
# during config registration, so report flydsl as unavailable there instead
# of failing the import.
from flydsl.runtime.device import get_rocm_arch
from flydsl.utils.smem_allocator import SMEM_CAPACITY_MAP

return get_rocm_arch() in SMEM_CAPACITY_MAP
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