[Test] Try to fix CI flaky rotary test

Author: tridao

tests/test_rotary.py

@@ -135,6 +135,12 @@ def assert_one_cuda_kernel_no_memcpy(prof):
             "(CUPTI unavailable); cannot verify kernel-count / no-memcpy."
         )
     names = cuda_event_names(prof)
+    if not names:
+        # Probe confirmed CUPTI works in this process, but kineto intermittently
+        # delivers zero CUDA events for an individual profile block under load
+        # (observed in containerized CI). The "kernel removed entirely" regression
+        # this would mask is still caught by the numerical asserts in these tests.
+        pytest.skip("torch.profiler captured no CUDA events for this run (kineto flake)")
     kernels = [name for name in names if not name.startswith("Memcpy")]
     memcpys = [name for name in names if name.startswith("Memcpy")]
     assert len(kernels) == 1, names