diff --git a/aiter/ops/flydsl/utils.py b/aiter/ops/flydsl/utils.py
index ba6a60b00e..c8660fc115 100644
--- a/aiter/ops/flydsl/utils.py
+++ b/aiter/ops/flydsl/utils.py
@@ -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