fix DTensor-pytorch-AtomGit

已合并

fix DTensor #29015

jizewei创建于 1月4日从jizewei/pytorch： v2.7.1_fix_dtensor_ut 合入到 Ascend/pytorch： v2.7.1

fix DTensor #29015

已合并

jizewei创建于 1月4日

从jizewei/pytorch v2.7.1_fix_dtensor_ut合入到Ascend/pytorch v2.7.1

jizewei

1月4日

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind bug
/kind task
/kind feature

/kind bug

What does this PR do / why do we need it:

change DTensor UT from 4 devices to 2 devices, because the CI environment only has 2 devices
fix dtensor strategy
adapt the newest npu_fusion_attention

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewers:

test_attention_ops.py

test_gather_swiglu.py

test_math_ops.py

test_matrix_ops.py

test_moe_ops.py

Pull Request已成功合入, 合并人@ascend-robot

（感谢 jizewei 的贡献）

J jizewei

1月4日创建了 pull request，commit 2cbdbe28

ascend-robot成员

1月4日评论：

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AtlasAccount成员

1月4日评论：

openLiBing可接管PR, PR详情链接:
https://www.openlibing.com/apps/transitionPrDetail?owner=Ascend&repo=pytorch&number=29015&platform=gitcode&codeHostingPlatformFlag=gitcode

ascend-robot成员

1月4日评论：

以下是根据您提交的修改文件推荐的Reviewer和Committer序列，需各模块评审通过后方可合入

Module List	Reviewers	Committers
repo-Ascend/pytorch	shaoyf, yangkaixin, wangchao285, culechan, wangchao430	dilililiwhy, chenhao_1209, yanpengquan, shaoyf, anyrenwei

ascend-robot成员

1月4日添加了label：stat/needs-squash

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王

王超成员

1月6日评论：

/approve

ascend-robot成员

1月6日添加了label：approved

ascend-robot成员

1月6日评论：

Review Guide

This Pull-Request Passes Review.
Committers who writed a comment of /approve are: zqwenn, wangchao430.
Reviewers who writed a comment of /lgtm are: wangchao430, zqwenn.

ascend-robot成员

1月6日合入了pull request

J jizewei

1月6日修改了pull request 的描述