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paddlepaddle--paddle/test/auto_parallel/spmd_rules/test_index_select_rule.py
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2026-07-13 12:40:42 +08:00

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Python

# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
from collections import OrderedDict
from paddle.distributed.auto_parallel.static.dist_attribute import (
DistTensorSpec,
TensorDistAttr,
)
from paddle.distributed.fleet import auto
from paddle.framework import core
class TestIndexSelectSPMDRule(unittest.TestCase):
def setUp(self):
x_shape = [4, 8, 16]
index_shape = [3]
process_mesh = auto.ProcessMesh(mesh=[[0, 1, 2], [3, 4, 5]])
self.attrs = OrderedDict()
self.attrs['axis'] = 1
self.rule = core.get_phi_spmd_rule("index_select")
x_dist_attr = TensorDistAttr()
x_dist_attr.dims_mapping = [-1, -1, -1]
x_dist_attr.process_mesh = process_mesh
self.x_spec = DistTensorSpec(x_shape, x_dist_attr)
index_dist_attr = TensorDistAttr()
index_dist_attr.dims_mapping = [-1]
index_dist_attr.process_mesh = process_mesh
self.index_spec = DistTensorSpec(index_shape, index_dist_attr)
def test_index_select_forward(self):
# [-1, -1, -1], [0], axis=1 --> [-1, -1, -1], [0], [-1, 0, -1]
self.x_spec.set_dims_mapping([-1, -1, -1])
self.index_spec.set_dims_mapping([0])
self.attrs["axis"] = 1
result_dist_attrs = self.rule.infer_forward(
self.x_spec,
self.index_spec,
self.attrs['axis'],
)
self.assertEqual(len(result_dist_attrs), 2)
inferred_input_dist_attrs = result_dist_attrs[0]
inferred_output_dist_attrs = result_dist_attrs[1]
self.assertEqual(len(inferred_input_dist_attrs), 2)
self.assertEqual(len(inferred_output_dist_attrs), 1)
self.assertEqual(
inferred_input_dist_attrs[0].dims_mapping, [-1, -1, -1]
)
self.assertEqual(inferred_input_dist_attrs[1].dims_mapping, [0])
self.assertEqual(
inferred_output_dist_attrs[0].dims_mapping, [-1, 0, -1]
)
# [-1, 0, -1], [0], axis=0 -> [-1, 0, -1], [-1], [-1, 0, -1]
self.x_spec.set_dims_mapping([-1, 0, -1])
self.index_spec.set_dims_mapping([0])
self.attrs["axis"] = 0
result_dist_attrs = self.rule.infer_forward(
self.x_spec,
self.index_spec,
self.attrs['axis'],
)
self.assertEqual(len(result_dist_attrs), 2)
inferred_input_dist_attrs = result_dist_attrs[0]
inferred_output_dist_attrs = result_dist_attrs[1]
self.assertEqual(len(inferred_input_dist_attrs), 2)
self.assertEqual(len(inferred_output_dist_attrs), 1)
self.assertEqual(inferred_input_dist_attrs[0].dims_mapping, [-1, 0, -1])
self.assertEqual(inferred_input_dist_attrs[1].dims_mapping, [-1])
self.assertEqual(
inferred_output_dist_attrs[0].dims_mapping, [-1, 0, -1]
)
# [-1, 1, -1], [0], axis=0 -> [-1, 1, -1], [0], [0, 1, -1]
self.x_spec.set_dims_mapping([-1, 1, -1])
self.index_spec.set_dims_mapping([0])
self.attrs["axis"] = 0
result_dist_attrs = self.rule.infer_forward(
self.x_spec,
self.index_spec,
self.attrs['axis'],
)
self.assertEqual(len(result_dist_attrs), 2)
inferred_input_dist_attrs = result_dist_attrs[0]
inferred_output_dist_attrs = result_dist_attrs[1]
self.assertEqual(len(inferred_input_dist_attrs), 2)
self.assertEqual(len(inferred_output_dist_attrs), 1)
self.assertEqual(inferred_input_dist_attrs[0].dims_mapping, [-1, 1, -1])
self.assertEqual(inferred_input_dist_attrs[1].dims_mapping, [0])
self.assertEqual(inferred_output_dist_attrs[0].dims_mapping, [0, 1, -1])
# [-1, 1, -1], [0], axis=1 -> [-1, -1, -1], [0], [-1, 0, -1]
self.x_spec.set_dims_mapping([-1, 1, -1])
self.index_spec.set_dims_mapping([0])
self.attrs["axis"] = 1
result_dist_attrs = self.rule.infer_forward(
self.x_spec,
self.index_spec,
self.attrs['axis'],
)
self.assertEqual(len(result_dist_attrs), 2)
inferred_input_dist_attrs = result_dist_attrs[0]
inferred_output_dist_attrs = result_dist_attrs[1]
self.assertEqual(len(inferred_input_dist_attrs), 2)
self.assertEqual(len(inferred_output_dist_attrs), 1)
self.assertEqual(
inferred_input_dist_attrs[0].dims_mapping, [-1, -1, -1]
)
self.assertEqual(inferred_input_dist_attrs[1].dims_mapping, [0])
self.assertEqual(
inferred_output_dist_attrs[0].dims_mapping, [-1, 0, -1]
)
def test_index_select_backward(self):
# [-1, -1, -1], [0], [-1, 0, -1], axis=1 --> [-1, -1, -1], [0], [-1, 0, -1], [-1, -1, -1](partial on axis=1 with 0)
self.out_grad_spec = DistTensorSpec(self.x_spec)
self.out_grad_spec.shape = [4, 3, 16]
self.out_grad_spec.set_dims_mapping([-1, 0, -1])
self.x_spec.set_dims_mapping([-1, -1, -1])
self.index_spec.set_dims_mapping([0])
self.attrs["axis"] = 1
result_dist_attrs = self.rule.infer_backward(
self.x_spec,
self.index_spec,
self.out_grad_spec,
self.attrs['axis'],
)
self.assertEqual(len(result_dist_attrs), 2)
inferred_input_dist_attrs = result_dist_attrs[0]
inferred_output_dist_attrs = result_dist_attrs[1]
self.assertEqual(len(inferred_input_dist_attrs), 3)
self.assertEqual(len(inferred_output_dist_attrs), 1)
self.assertEqual(
inferred_input_dist_attrs[0].dims_mapping, [-1, -1, -1]
)
self.assertEqual(inferred_input_dist_attrs[1].dims_mapping, [0])
self.assertEqual(inferred_input_dist_attrs[2].dims_mapping, [-1, 0, -1])
self.assertEqual(
inferred_output_dist_attrs[0].dims_mapping, [-1, -1, -1]
)
self.assertEqual(inferred_output_dist_attrs[0]._is_partial(), True)
self.assertEqual(inferred_output_dist_attrs[0]._partial_dims(), {0})
# [1, -1, -1], [0], [1, 0, -1], axis=1 -> [1, -1, -1], [0], [1, 0, -1], [1, -1, -1](partial on axis=1 with mesh_dim 0)
self.x_spec.set_dims_mapping([1, -1, -1])
self.x_spec.shape = [3, 4, 2]
self.index_spec.set_dims_mapping([0])
self.out_grad_spec = DistTensorSpec(self.x_spec)
self.out_grad_spec.shape = [3, 4, 2]
self.out_grad_spec.set_dims_mapping([1, 0, -1])
self.attrs["axis"] = 1
result_dist_attrs = self.rule.infer_backward(
self.x_spec,
self.index_spec,
self.out_grad_spec,
self.attrs['axis'],
)
self.assertEqual(len(result_dist_attrs), 2)
inferred_input_dist_attrs = result_dist_attrs[0]
inferred_output_dist_attrs = result_dist_attrs[1]
self.assertEqual(len(inferred_input_dist_attrs), 3)
self.assertEqual(len(inferred_output_dist_attrs), 1)
self.assertEqual(inferred_input_dist_attrs[0].dims_mapping, [1, -1, -1])
self.assertEqual(inferred_input_dist_attrs[1].dims_mapping, [0])
self.assertEqual(inferred_input_dist_attrs[2].dims_mapping, [1, 0, -1])
self.assertEqual(
inferred_output_dist_attrs[0].dims_mapping, [1, -1, -1]
)
self.assertEqual(inferred_output_dist_attrs[0]._is_partial(), True)
self.assertEqual(inferred_output_dist_attrs[0]._partial_dims(), {0})
if __name__ == "__main__":
unittest.main()