[Model] Add LingBot World Ulysses sequence parallelism (#6841)

Signed-off-by: wtz2333 <2955110911@qq.com>
Co-authored-by: Zhou Taichang <tzhouam@connect.ust.hk>

tests/examples/offline_inference/test_lingbot_world_v2.py

@@ -0,0 +1,24 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM-Omni project
+
+from pathlib import Path
+
+import pytest
+
+from examples.offline_inference.diffusion import lingbot_world_v2 as example
+
+pytestmark = [pytest.mark.core_model, pytest.mark.cpu, pytest.mark.diffusion]
+
+
+def test_offline_ulysses_argument(tmp_path):
+    argv = ["--image", "frame.jpg", "--action-dir", "forward", "--prompt", "A lake"]
+    paths = example.LingBotPaths(
+        tmp_path / "frame.jpg", tmp_path / "forward", tmp_path, Path("forward"), 9, tmp_path / "out.mp4"
+    )
+    assert example.parse_args(argv).ulysses_degree == 1
+    args = example.parse_args([*argv, "--ulysses-degree", "4"])
+    kwargs = example.build_omni_kwargs(args, paths)
+    assert kwargs["ulysses_degree"] == 4 and kwargs["tensor_parallel_size"] == 1
+    args.ulysses_degree = 0
+    with pytest.raises(ValueError, match="--ulysses-degree"):
+        example.build_omni_kwargs(args, paths)