wehub-resource-sync
46 lines
1.8 KiB
Python
46 lines
1.8 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# pylint: disable=invalid-name
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"""Default legalization function for distir-related operators."""
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from tvm import relax, tirx
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from tvm.ir import Call
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from ...block_builder import BlockBuilder
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from ...expr import Expr
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from ...op import call_pure_packed
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from ...type import ShapeType
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from .common import register_legalize
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@register_legalize("relax.dist.redistribute_replica_to_shard")
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def _redistribute_replica_to_shard(_bb: BlockBuilder, call: Call) -> Expr:
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num_workers = call.attrs.num_workers
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axis = call.attrs.axis
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worker_id_symbol = tirx.Var("worker_id", "int64")
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worker_id_var = _bb.emit(call_pure_packed("runtime.disco.worker_id", ty_args=[ShapeType(None)]))
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_bb.match_cast(worker_id_var, ShapeType([worker_id_symbol]))
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split_axis_size = call.args[0].ty.shape[axis]
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return relax.op.strided_slice(
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call.args[0],
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axes=[axis],
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begin=[worker_id_symbol * split_axis_size // num_workers],
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end=[(worker_id_symbol + 1) * split_axis_size // num_workers],
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assume_inbound=True,
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)
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