message: Add 'optonly' directive to linear_operator_circulant tests.
diff: @@ -85,7 +85,10 @@ cuda_py_test(
  "//tensorflow/python:platform_test",
  ],
  shard_count = 5,
  - tags = ["noasan"], # times out b/63678675
  + tags = [
  + "noasan", # times out, b/63678675
  + "optonly", # times out, b/79171797
  + ],
  )
  cuda_py_test(
  