Release 2.6 Validations Failures

[atalman]

Looks like there are multiple issues revealed with Release 2.6 validation:

Runs:
https://github.com/pytorch/test-infra/actions/runs/12375056109/job/34539017465
https://github.com/pytorch/audio/actions/runs/12359503259/job/34537783507

1. AArch64 cpu and CUDA failures, except python 3.12 :

import setuptools
torch._dynamo.exc.BackendCompilerFailed: backend='inductor' raised:
ModuleNotFoundError: No module named 'setuptools'

[atalman]

Resolved Issues:

3. Rocm 6.2.4 failure to download the binary - RESOLVED

++ eval pip3 install --force-reinstall torch --index-url https://download.pytorch.org/whl/test/rocm6.2.4
+++ pip3 install --force-reinstall torch --index-url https://download.pytorch.org/whl/test/rocm6.2.4
Looking in indexes: https://download.pytorch.org/whl/test/rocm6.2.4
ERROR: Could not find a version that satisfies the requirement torch (from versions: none)
ERROR: No matching distribution found for torch

deployed
#6071
and
#6080

4. Rocm 6.1 failure gxx ABI 0 not expected - RESOLVED

+++ echo 'gcc ABI 0 not as expected.'
gcc ABI 0 not as expected.

deployed #6080

5. XPU linux - RESOLVED

+++ echo 'gcc ABI 1 not as expected.'
gcc ABI 1 not as expected.

Should be fixed by: #6078

7. Windows failures unable to checkout repo
   Caused by [ROCm] CK Flash Attention Backend pytorch#138947 (comment) will probably need to be reverted

8. Torch compile failure on py3.13:

esting smoke_test_compile for cuda and torch.float16
Traceback (most recent call last):
  File "/pytorch/pytorch/.ci/pytorch/./smoke_test/smoke_test.py", line 385, in <module>
    main()
    ~~~~^^
  File "/pytorch/pytorch/.ci/pytorch/./smoke_test/smoke_test.py", line 379, in main
    smoke_test_cuda(
    ~~~~~~~~~~~~~~~^
        options.package, options.runtime_error_check, options.torch_compile_check
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/pytorch/pytorch/.ci/pytorch/./smoke_test/smoke_test.py", line 186, in smoke_test_cuda
    smoke_test_compile("cuda" if torch.cuda.is_available() else "cpu")
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/pytorch/pytorch/.ci/pytorch/./smoke_test/smoke_test.py", line 286, in smoke_test_compile
    x_pt2 = torch.compile(foo)(x)
  File "/opt/conda/envs/conda-env-12375056109/lib/python3.13/site-packages/torch/_dynamo/eval_frame.py", line 573, in _fn
    return fn(*args, **kwargs)
  File "/opt/conda/envs/conda-env-12375056109/lib/python3.13/site-packages/torch/_dynamo/convert_frame.py", line 1380, in __call__
    return self._torchdynamo_orig_callable(
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        frame, cache_entry, self.hooks, frame_state, skip=1
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/opt/conda/envs/conda-env-12375056109/lib/python3.13/site-packages/torch/_dynamo/convert_frame.py", line 1164, in __call__
    result = self._inner_convert(
        frame, cache_entry, hooks, frame_state, skip=skip + 1
    )
  File "/opt/conda/envs/conda-env-12375056109/lib/python3.13/site-packages/torch/_dynamo/convert_frame.py", line 547, in __call__
    return _compile(
        frame.f_code,
    ...<14 lines>...
        skip=skip + 1,
    )
  File "/opt/conda/envs/conda-env-12375056109/lib/python3.13/site-packages/torch/_dynamo/convert_frame.py", line 986, in _compile
    guarded_code = compile_inner(code, one_graph, hooks, transform)
  File "/opt/conda/envs/conda-env-12375056109/lib/python3.13/site-packages/torch/_dynamo/convert_frame.py", line 715, in compile_inner
    return _compile_inner(code, one_graph, hooks, transform)
  File "/opt/conda/envs/conda-env-12375056109/lib/python3.13/site-packages/torch/_utils_internal.py", line 95, in wrapper_function
    return function(*args, **kwargs)
  File "/opt/conda/envs/conda-env-12375056109/lib/python3.13/site-packages/torch/_dynamo/convert_frame.py", line 750, in _compile_inner
    out_code = transform_code_object(code, transform)
  File "/opt/conda/envs/conda-env-12375056109/lib/python3.13/site-packages/torch/_dynamo/bytecode_transformation.py", line 1361, in transform_code_object
    transformations(instructions, code_options)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Need to rebuild the rc. Triton installation is missing