[`T5`] Adding model_parallel = False to `T5ForQuestionAnswering` and...

[`T5`] Adding model_parallel = False to `T5ForQuestionAnswering` and `MT5ForQuestionAnswering` (#24684)

Adding model_parallel = False

src/transformers/models/mt5/modeling_mt5.py

@@ -2032,6 +2032,8 @@ class MT5ForQuestionAnswering(MT5PreTrainedModel):
         # Initialize weights and apply final processing
         self.post_init()
 
+        self.model_parallel = False
+
     # Copied from transformers.models.t5.modeling_t5.T5ForQuestionAnswering.get_input_embeddings
     def get_input_embeddings(self):
         return self.shared

src/transformers/models/t5/modeling_t5.py

@@ -1980,6 +1980,8 @@ class T5ForQuestionAnswering(T5PreTrainedModel):
         # Initialize weights and apply final processing
         self.post_init()
 
+        self.model_parallel = False
+
     def get_input_embeddings(self):
         return self.shared