Fix sep compatible (#7721)

* run 4096

* fix get sep attr if paddle do not support sep

* polish

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Co-authored-by: pangengzheng <pangengzheng.baidu.com>

Author: pangengzheng

paddlenlp/trainer/trainer_utils.py

@@ -99,8 +99,11 @@ def _get_distributed_seeds(seed: int = 1234, topo: Topology = None):
         mp_rank = hcg.get_model_parallel_rank()
         mp_size = hcg.get_model_parallel_world_size()
 
-        sep_rank = hcg.get_sep_parallel_rank()
-        sep_size = hcg.get_sep_parallel_world_size()
+        if hasattr(hcg, "get_sep_parallel_rank"):
+            sep_rank = hcg.get_sep_parallel_rank()
+            sep_size = hcg.get_sep_parallel_world_size()
+        else:
+            sep_rank, sep_size = 0, 1
 
         pp_rank = hcg.get_stage_id()
         pp_size = hcg.get_pipe_parallel_world_size()