feat: upgrade transformers to v4.56.1 (#3127)

* feat: upgrade transformers to v4.56

* fix handling of CP/SP now that position_ids are default even for unpacked sequences

* feat: monkeypatch list_repo_templates

* fix: apply patch for tests only

* see if updated main works at least

* fix: update to patch release and remove monkeypatch

* remove fsdp2 eval patch

---------

Co-authored-by: Wing Lian <wing@axolotl.ai>

src/axolotl/loaders/patch_manager.py

@@ -80,13 +80,7 @@ class PatchManager:
             patch_maybe_log_save_evaluate,
         )
 
-        patch_fsdp2 = (
-            self.cfg.torch_compile
-            and self.cfg.fsdp_config
-            and self.cfg.fsdp_version == 2
-        )
-
-        patch_evaluation_loop(patch_fsdp2)
+        patch_evaluation_loop()
         patch_maybe_log_save_evaluate()
 
     def apply_post_model_load_patches(self, model: PreTrainedModel):

src/axolotl/monkeypatch/transformers/trainer_loss_calc.py

@@ -28,15 +28,6 @@ PATCHED_EVAL_CODE = {
     "array": 'metrics[f"{metric_key_prefix}_loss"] = np.nanmean(all_losses).item()',
 }
 
-ORIGINAL_FSDP2_CODE = """
-    model.eval()
-"""
-
-PATCHED_FSDP2_CODE = """
-    if hasattr(model, "eval") and callable(model.eval):
-        self.model.eval()
-"""
-
 ORIGINAL_MAYBE_CODE = "tr_loss_scalar = self._nested_gather(tr_loss).mean().item()"
 PATCHED_MAYBE_CODE = "tr_loss_scalar = self._nested_gather(tr_loss).nanmean().item()"
 
@@ -46,13 +37,7 @@ def check_evaluation_loop_is_patchable() -> bool:
     return all(value in evaluation_loop_source for value in ORIGINAL_EVAL_CODE.values())
 
 
-def check_evaluation_loop_is_fsdp2_patchable() -> bool:
-    evaluation_loop_source = inspect.getsource(Trainer.evaluation_loop)
-    evaluation_loop_source, _ = detab_code(evaluation_loop_source)
-    return ORIGINAL_FSDP2_CODE in evaluation_loop_source
-
-
-def patch_evaluation_loop(patch_fsdp2: bool):
+def patch_evaluation_loop():
     """Patch the evaluation_loop method."""
     # Check if already patched
     if hasattr(Trainer, "_original_evaluation_loop"):
@@ -75,13 +60,6 @@ def patch_evaluation_loop(patch_fsdp2: bool):
         ORIGINAL_EVAL_CODE["array"], PATCHED_EVAL_CODE["array"]
     )
 
-    # Apply FSDP2 eval guard patch if needed
-    if patch_fsdp2 and ORIGINAL_FSDP2_CODE in evaluation_loop_source:
-        evaluation_loop_source = evaluation_loop_source.replace(
-            ORIGINAL_FSDP2_CODE, PATCHED_FSDP2_CODE
-        )
-        LOG.info("Applied FSDP2 eval guard patch to evaluation_loop")
-
     # Rename the function to avoid conflicts
     evaluation_loop_source = evaluation_loop_source.replace(
         "def evaluation_loop(",

src/axolotl/utils/ctx_managers/sequence_parallel.py

@@ -48,10 +48,10 @@ def apply_sequence_parallelism(
             - The original sequence length before padding.
             - The number of padding tokens added.
     """
-    original_seq_len = batch["input_ids"].size(1)
+    batch_size, original_seq_len = batch["input_ids"].shape
 
     # Update ring attention params if needed
-    if batch.get("position_ids") is not None:
+    if batch.get("position_ids") is not None and batch_size == 1:
         update_ring_attn_params(position_ids=batch["position_ids"])
     else:
         # If position_ids aren't already in the batch, create them