Platforms: rocm, linux, slow

This test was disabled because it is failing in CI. See recent examples and the most recent trunk workflow logs.

Over the past 3 hours, it has been determined flaky in 12 workflow(s) with 24 failures and 12 successes.

Debugging instructions (after clicking on the recent samples link):
DO NOT ASSUME THINGS ARE OKAY IF THE CI IS GREEN. We now shield flaky tests from developers so CI will thus be green but it will be harder to parse the logs.
To find relevant log snippets:

1. Click on the workflow logs linked above
2. Click on the Test step of the job so that it is expanded. Otherwise, the grepping will not work.
3. Grep for test_graph_partition_cpu_scalar2
4. There should be several instances run (as flaky tests are rerun in CI) from which you can study the logs.

Traceback (most recent call last):
  File "/var/lib/jenkins/pytorch/test/inductor/test_cudagraph_trees.py", line 2749, in test_graph_partition_cpu_scalar2
    self.assertEqual(self.get_manager().new_graph_id().id, 1)
AttributeError: 'NoneType' object has no attribute 'new_graph_id'

To execute this test, run the following from the base repo dir:
    PYTORCH_TEST_WITH_ROCM=1 python test/inductor/test_cudagraph_trees.py CudaGraphTreeTests.test_graph_partition_cpu_scalar2

This message can be suppressed by setting PYTORCH_PRINT_REPRO_ON_FAILURE=0

Test file path: inductor/test_cudagraph_trees_expandable_segments.py

For all disabled tests (by GitHub issue), see https://hud.pytorch.org/disabled.

cc @ptrblck @msaroufim @eqy @jerryzh168 @jeffdaily @sunway513 @jithunnair-amd @pruthvistony @ROCmSupport @dllehr-amd @jataylo @hongxiayang @naromero77amd @clee2000