junrushao commented on code in PR #15680:
URL: https://github.com/apache/tvm/pull/15680#discussion_r1319179762
##########
python/tvm/relax/transform/legalize_ops/ccl.py:
##########
@@ -46,9 +48,34 @@ def _allreduce(_bb: BlockBuilder, call: Call) -> Expr:
@register_legalize("relax.ccl.broadcast_from_worker0")
-def broadcast_from_worker0(_bb: BlockBuilder, call: Call) -> Expr:
+def _broadcast_from_worker0(_bb: BlockBuilder, call: Call) -> Expr:
return call_pure_packed(
"runtime.disco.broadcast_from_worker0",
call.args[0],
sinfo_args=call.args[0].struct_info,
)
+
+
+@register_legalize("relax.ccl.scatter_from_worker0")
+def _scatter_from_worker0(_bb: BlockBuilder, call: Call) -> Expr:
+ output_shape = []
+ for i, shape_value in enumerate(call.args[0].struct_info.shape.values):
Review Comment:
```python
assert isinstance(call.args[0].struct_info, TensorStructInfo)
assert isinstance(call.args[0].struct_info.shape.struct_info,
ShapeStructInfo)
arg_shape = call.args[0].struct_info.shape.struct_info
```
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