[WAN_S2V] Enable HSDP for wan s2v (#4458)

Signed-off-by: Chendi Xue <chendi.xue@intel.com>

examples/offline_inference/speech_to_video/speech_to_video.py

@@ -172,6 +172,29 @@ def parse_args() -> argparse.Namespace:
         default=1,
         help="Number of GPUs used for ulysses sequence parallelism.",
     )
+    parser.add_argument(
+        "--use-hsdp",
+        action="store_true",
+        help="Enable Hybrid Sharded Data Parallel to shard model weights across GPUs.",
+    )
+    parser.add_argument(
+        "--hsdp-shard-size",
+        type=int,
+        default=-1,
+        help=(
+            "Number of GPUs to shard model weights across within each replica group. "
+            "-1 (default) auto-calculates as world_size / replicate_size."
+        ),
+    )
+    parser.add_argument(
+        "--hsdp-replicate-size",
+        type=int,
+        default=1,
+        help=(
+            "Number of replica groups for HSDP. Each replica holds a full sharded copy. "
+            "Default 1 means pure sharding (no replication)."
+        ),
+    )
     parser.add_argument(
         "--enforce-eager",
         action="store_true",
@@ -234,6 +257,9 @@ def main():
         vae_patch_parallel_size=args.vae_patch_parallel_size,
         ring_degree=args.ring_degree,
         ulysses_degree=args.ulysses_degree,
+        use_hsdp=args.use_hsdp,
+        hsdp_shard_size=args.hsdp_shard_size,
+        hsdp_replicate_size=args.hsdp_replicate_size,
     )
 
     profiler_enabled = args.profiler_config is not None