WIP: DeviceMesh.is_part_of_mesh

[aorenste]

Stack from ghstack (oldest at bottom):

• #169552
• #169551
• #167553
• #169550
• #169549
• -> #169548
• #169547

[pytorch-bot[bot]]

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:x: 2 New Failures

As of commit d08f8d9765ec494d38cfa0938a60b2d656c55b38 with merge base 5afae12c140d5a119f9c090bee2c54831b89633b ():

NEW FAILURES - The following jobs have failed:

• pull / linux-jammy-py3.10-gcc11 / test (distributed, 1, 2, lf.linux.2xlarge) (gh) test/distributed/tensor/test_redistribute.py::RedistributeTestWithLocalTensor::test_all_gather_split_cat_fallback_batch_gt_1
• pull / linux-jammy-py3.10-gcc11 / test (distributed, 2, 2, lf.linux.2xlarge) (gh) test/distributed/tensor/test_redistribute.py::RedistributeTestWithLocalTensor::test_all_gather_no_optimization_gather_dim_not_1

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