[Model] Add Cache-DiT and CPU offload support for SANA-Video 2B (#5882)

Signed-off-by: cr-gao <gaochenrui@sjtu.edu.cn>
Co-authored-by: Hongsheng Liu <liuhongsheng4@huawei.com>
Co-authored-by: Alicia <115451386+congw729@users.noreply.github.com>

tests/model_tests/diffusion/model_settings.py

@@ -57,6 +57,11 @@ DIFFUSION_TEST_SETTINGS = {
             [DiffusionAccs.TENSOR_PARALLEL],
             [DiffusionAccs.CFG_PARALLEL],
             [DiffusionAccs.TENSOR_PARALLEL, DiffusionAccs.CFG_PARALLEL],
+            [DiffusionAccs.CACHE_DIT],
+            [DiffusionAccs.CPU_OFFLOAD],
+            [DiffusionAccs.LAYERWISE_OFFLOAD],
+            [DiffusionAccs.CACHE_DIT, DiffusionAccs.CPU_OFFLOAD],
+            [DiffusionAccs.CACHE_DIT, DiffusionAccs.LAYERWISE_OFFLOAD],
         ],
         check_multi_output=False,
     ),