diff --git a/src/llamafactory/extras/misc.py b/src/llamafactory/extras/misc.py
index 93153b3e..30c287bd 100644
--- a/src/llamafactory/extras/misc.py
+++ b/src/llamafactory/extras/misc.py
@@ -1,4 +1,7 @@
-# Copyright 2024 the LlamaFactory team.
+# Copyright 2024 HuggingFace Inc. and the LlamaFactory team.
+#
+# This code is inspired by the HuggingFace's PEFT library.
+# https://github.com/huggingface/peft/blob/v0.10.0/src/peft/peft_model.py
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,15 +17,11 @@
 
 import gc
 import os
-from typing import TYPE_CHECKING, Dict, Tuple
+from typing import TYPE_CHECKING, Tuple
 
 import torch
-from peft import PeftModel
-from transformers import InfNanRemoveLogitsProcessor, LogitsProcessorList, PreTrainedModel
+from transformers import InfNanRemoveLogitsProcessor, LogitsProcessorList
 from transformers.utils import (
-    SAFE_WEIGHTS_NAME,
-    WEIGHTS_NAME,
-    is_safetensors_available,
     is_torch_bf16_gpu_available,
     is_torch_cuda_available,
     is_torch_mps_available,
@@ -31,15 +30,9 @@ from transformers.utils import (
 )
 from transformers.utils.versions import require_version
 
-from .constants import V_HEAD_SAFE_WEIGHTS_NAME, V_HEAD_WEIGHTS_NAME
 from .logging import get_logger
 
 
-if is_safetensors_available():
-    from safetensors import safe_open
-    from safetensors.torch import save_file
-
-
 _is_fp16_available = is_torch_npu_available() or is_torch_cuda_available()
 try:
     _is_bf16_available = is_torch_bf16_gpu_available()
@@ -48,8 +41,6 @@ except Exception:
 
 
 if TYPE_CHECKING:
-    from trl import AutoModelForCausalLMWithValueHead
-
     from ..hparams import ModelArguments
 
 
@@ -99,7 +90,7 @@ def count_parameters(model: torch.nn.Module) -> Tuple[int, int]:
         if num_params == 0 and hasattr(param, "ds_numel"):
             num_params = param.ds_numel
 
-        # Due to the design of 4bit linear layers from bitsandbytes, multiply the number of parameters by 2
+        # Due to the design of 4bit linear layers from bitsandbytes, multiply the number of parameters by itemsize
         if param.__class__.__name__ == "Params4bit":
             if hasattr(param, "quant_storage") and hasattr(param.quant_storage, "itemsize"):
                 num_bytes = param.quant_storage.itemsize
@@ -117,51 +108,6 @@ def count_parameters(model: torch.nn.Module) -> Tuple[int, int]:
     return trainable_params, all_param
 
 
-def fix_valuehead_checkpoint(
-    model: "AutoModelForCausalLMWithValueHead", output_dir: str, safe_serialization: bool
-) -> None:
-    r"""
-    The model is already unwrapped.
-
-    There are three cases:
-    1. full tuning without ds_zero3: state_dict = {"model.layers.*": ..., "v_head.summary.*": ...}
-    2. lora tuning without ds_zero3: state_dict = {"v_head.summary.*": ...}
-    3. under deepspeed zero3: state_dict = {"pretrained_model.model.layers.*": ..., "v_head.summary.*": ...}
-
-    We assume `stage3_gather_16bit_weights_on_model_save=true`.
-    """
-    if not isinstance(model.pretrained_model, (PreTrainedModel, PeftModel)):
-        return
-
-    if safe_serialization:
-        path_to_checkpoint = os.path.join(output_dir, SAFE_WEIGHTS_NAME)
-        with safe_open(path_to_checkpoint, framework="pt", device="cpu") as f:
-            state_dict: Dict[str, torch.Tensor] = {key: f.get_tensor(key) for key in f.keys()}
-    else:
-        path_to_checkpoint = os.path.join(output_dir, WEIGHTS_NAME)
-        state_dict: Dict[str, torch.Tensor] = torch.load(path_to_checkpoint, map_location="cpu")
-
-    decoder_state_dict = {}
-    v_head_state_dict = {}
-    for name, param in state_dict.items():
-        if name.startswith("v_head."):
-            v_head_state_dict[name] = param
-        else:
-            decoder_state_dict[name.replace("pretrained_model.", "")] = param
-
-    os.remove(path_to_checkpoint)
-    model.pretrained_model.save_pretrained(
-        output_dir, state_dict=decoder_state_dict or None, safe_serialization=safe_serialization
-    )
-
-    if safe_serialization:
-        save_file(v_head_state_dict, os.path.join(output_dir, V_HEAD_SAFE_WEIGHTS_NAME), metadata={"format": "pt"})
-    else:
-        torch.save(v_head_state_dict, os.path.join(output_dir, V_HEAD_WEIGHTS_NAME))
-
-    logger.info("Value head model saved at: {}".format(output_dir))
-
-
 def get_current_device() -> torch.device:
     r"""
     Gets the current available device.
@@ -201,7 +147,7 @@ def get_logits_processor() -> "LogitsProcessorList":
     return logits_processor
 
 
-def infer_optim_dtype(model_dtype: torch.dtype) -> torch.dtype:
+def infer_optim_dtype(model_dtype: "torch.dtype") -> "torch.dtype":
     r"""
     Infers the optimal dtype according to the model_dtype and device compatibility.
     """
@@ -220,7 +166,7 @@ def is_gpu_or_npu_available() -> bool:
     return is_torch_npu_available() or is_torch_cuda_available()
 
 
-def has_tokenized_data(path: os.PathLike) -> bool:
+def has_tokenized_data(path: "os.PathLike") -> bool:
     r"""
     Checks if the path has a tokenized dataset.
     """
diff --git a/src/llamafactory/hparams/finetuning_args.py b/src/llamafactory/hparams/finetuning_args.py
index b676891e..28da95ad 100644
--- a/src/llamafactory/hparams/finetuning_args.py
+++ b/src/llamafactory/hparams/finetuning_args.py
@@ -379,10 +379,10 @@ class FinetuningArguments(FreezeArguments, LoraArguments, RLHFArguments, GaloreA
         if self.loraplus_lr_ratio is not None and self.finetuning_type != "lora":
             raise ValueError("`loraplus_lr_ratio` is only valid for LoRA training.")
 
-        if self.pissa_convert and self.finetuning_type != "lora":
-            raise ValueError("`pissa_convert` is only valid for LoRA training.")
+        if self.pissa_init and self.finetuning_type != "lora":
+            raise ValueError("`pissa_init` is only valid for LoRA training.")
 
-        if self.pissa_convert and (self.stage in ["rm", "ppo", "kto"] or self.use_ref_model):
+        if self.pissa_init and (self.stage in ["ppo", "kto"] or self.use_ref_model):
             raise ValueError("Cannot use PiSSA for current training stage.")
 
         if self.train_mm_proj_only and self.finetuning_type != "full":
diff --git a/src/llamafactory/hparams/parser.py b/src/llamafactory/hparams/parser.py
index 5c59fbe0..8b2ea4c1 100644
--- a/src/llamafactory/hparams/parser.py
+++ b/src/llamafactory/hparams/parser.py
@@ -83,9 +83,6 @@ def _verify_model_args(model_args: "ModelArguments", finetuning_args: "Finetunin
     if model_args.adapter_name_or_path is not None and finetuning_args.finetuning_type != "lora":
         raise ValueError("Adapter is only valid for the LoRA method.")
 
-    if model_args.use_unsloth and is_deepspeed_zero3_enabled():
-        raise ValueError("Unsloth is incompatible with DeepSpeed ZeRO-3.")
-
     if model_args.quantization_bit is not None:
         if finetuning_args.finetuning_type != "lora":
             raise ValueError("Quantization is only compatible with the LoRA method.")
@@ -186,6 +183,9 @@ def get_train_args(args: Optional[Dict[str, Any]] = None) -> _TRAIN_CLS:
     if training_args.parallel_mode == ParallelMode.NOT_DISTRIBUTED:
         raise ValueError("Please launch distributed training with `llamafactory-cli` or `torchrun`.")
 
+    if training_args.deepspeed and training_args.parallel_mode != ParallelMode.DISTRIBUTED:
+        raise ValueError("Please use `FORCE_TORCHRUN=1` to launch DeepSpeed training.")
+
     if training_args.max_steps == -1 and data_args.streaming:
         raise ValueError("Please specify `max_steps` in streaming mode.")
 
@@ -195,6 +195,9 @@ def get_train_args(args: Optional[Dict[str, Any]] = None) -> _TRAIN_CLS:
     if training_args.do_train and model_args.quantization_device_map == "auto":
         raise ValueError("Cannot use device map for quantized models in training.")
 
+    if finetuning_args.pissa_init and is_deepspeed_zero3_enabled():
+        raise ValueError("PiSSA is incompatible with DeepSpeed ZeRO-3.")
+
     if finetuning_args.pure_bf16:
         if not is_torch_bf16_gpu_available():
             raise ValueError("This device does not support `pure_bf16`.")
@@ -224,6 +227,9 @@ def get_train_args(args: Optional[Dict[str, Any]] = None) -> _TRAIN_CLS:
     if model_args.visual_inputs and data_args.packing:
         raise ValueError("Cannot use packing in MLLM fine-tuning.")
 
+    if model_args.use_unsloth and is_deepspeed_zero3_enabled():
+        raise ValueError("Unsloth is incompatible with DeepSpeed ZeRO-3.")
+
     _verify_model_args(model_args, finetuning_args)
     _check_extra_dependencies(model_args, finetuning_args, training_args)
 
diff --git a/src/llamafactory/extras/callbacks.py b/src/llamafactory/train/callbacks.py
similarity index 59%
rename from src/llamafactory/extras/callbacks.py
rename to src/llamafactory/train/callbacks.py
index 0dff6a69..dc9c981e 100644
--- a/src/llamafactory/extras/callbacks.py
+++ b/src/llamafactory/train/callbacks.py
@@ -1,4 +1,7 @@
-# Copyright 2024 the LlamaFactory team.
+# Copyright 2024 HuggingFace Inc. and the LlamaFactory team.
+#
+# This code is inspired by the HuggingFace's transformers library.
+# https://github.com/huggingface/transformers/blob/v4.40.0/src/transformers/trainer.py
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -22,22 +25,78 @@ from concurrent.futures import ThreadPoolExecutor
 from datetime import timedelta
 from typing import TYPE_CHECKING, Any, Dict, Optional
 
+import torch
 import transformers
-from transformers import TrainerCallback
+from peft import PeftModel
+from transformers import PreTrainedModel, ProcessorMixin, TrainerCallback
 from transformers.trainer_utils import PREFIX_CHECKPOINT_DIR, has_length
+from transformers.utils import (
+    SAFE_WEIGHTS_NAME,
+    WEIGHTS_NAME,
+    is_safetensors_available,
+)
 
-from .constants import TRAINER_LOG
-from .logging import LoggerHandler, get_logger
-from .misc import fix_valuehead_checkpoint
+from ..extras.constants import TRAINER_LOG, V_HEAD_SAFE_WEIGHTS_NAME, V_HEAD_WEIGHTS_NAME
+from ..extras.logging import LoggerHandler, get_logger
 
 
+if is_safetensors_available():
+    from safetensors import safe_open
+    from safetensors.torch import save_file
+
 if TYPE_CHECKING:
     from transformers import TrainerControl, TrainerState, TrainingArguments
+    from trl import AutoModelForCausalLMWithValueHead
 
 
 logger = get_logger(__name__)
 
 
+def fix_valuehead_checkpoint(
+    model: "AutoModelForCausalLMWithValueHead", output_dir: str, safe_serialization: bool
+) -> None:
+    r"""
+    The model is already unwrapped.
+
+    There are three cases:
+    1. full tuning without ds_zero3: state_dict = {"model.layers.*": ..., "v_head.summary.*": ...}
+    2. lora tuning without ds_zero3: state_dict = {"v_head.summary.*": ...}
+    3. under deepspeed zero3: state_dict = {"pretrained_model.model.layers.*": ..., "v_head.summary.*": ...}
+
+    We assume `stage3_gather_16bit_weights_on_model_save=true`.
+    """
+    if not isinstance(model.pretrained_model, (PreTrainedModel, PeftModel)):
+        return
+
+    if safe_serialization:
+        path_to_checkpoint = os.path.join(output_dir, SAFE_WEIGHTS_NAME)
+        with safe_open(path_to_checkpoint, framework="pt", device="cpu") as f:
+            state_dict: Dict[str, torch.Tensor] = {key: f.get_tensor(key) for key in f.keys()}
+    else:
+        path_to_checkpoint = os.path.join(output_dir, WEIGHTS_NAME)
+        state_dict: Dict[str, torch.Tensor] = torch.load(path_to_checkpoint, map_location="cpu")
+
+    decoder_state_dict = {}
+    v_head_state_dict = {}
+    for name, param in state_dict.items():
+        if name.startswith("v_head."):
+            v_head_state_dict[name] = param
+        else:
+            decoder_state_dict[name.replace("pretrained_model.", "")] = param
+
+    os.remove(path_to_checkpoint)
+    model.pretrained_model.save_pretrained(
+        output_dir, state_dict=decoder_state_dict or None, safe_serialization=safe_serialization
+    )
+
+    if safe_serialization:
+        save_file(v_head_state_dict, os.path.join(output_dir, V_HEAD_SAFE_WEIGHTS_NAME), metadata={"format": "pt"})
+    else:
+        torch.save(v_head_state_dict, os.path.join(output_dir, V_HEAD_WEIGHTS_NAME))
+
+    logger.info("Value head model saved at: {}".format(output_dir))
+
+
 class FixValueHeadModelCallback(TrainerCallback):
     def on_save(self, args: "TrainingArguments", state: "TrainerState", control: "TrainerControl", **kwargs):
         r"""
@@ -51,8 +110,70 @@ class FixValueHeadModelCallback(TrainerCallback):
             )
 
 
+class SaveProcessorCallback(TrainerCallback):
+    def __init__(self, processor: "ProcessorMixin") -> None:
+        r"""
+        Initializes a callback for saving the processor.
+        """
+        self.processor = processor
+
+    def on_train_end(self, args: "TrainingArguments", state: "TrainerState", control: "TrainerControl", **kwargs):
+        r"""
+        Event called at the end of training.
+        """
+        if args.should_save:
+            getattr(self.processor, "image_processor").save_pretrained(args.output_dir)
+
+
+class PissaConvertCallback(TrainerCallback):
+    r"""
+    Initializes a callback for converting the PiSSA adapter to a normal one.
+    """
+
+    def on_train_begin(self, args: "TrainingArguments", state: "TrainerState", control: "TrainerControl", **kwargs):
+        r"""
+        Event called at the beginning of training.
+        """
+        if args.should_save:
+            model = kwargs.pop("model")
+            pissa_init_dir = os.path.join(args.output_dir, "pissa_init")
+            logger.info("Initial PiSSA adatper will be saved at: {}.".format(pissa_init_dir))
+            if isinstance(model, PeftModel):
+                init_lora_weights = getattr(model.peft_config["default"], "init_lora_weights")
+                setattr(model.peft_config["default"], "init_lora_weights", True)
+                model.save_pretrained(pissa_init_dir, safe_serialization=args.save_safetensors)
+                setattr(model.peft_config["default"], "init_lora_weights", init_lora_weights)
+
+    def on_train_end(self, args: "TrainingArguments", state: "TrainerState", control: "TrainerControl", **kwargs):
+        r"""
+        Event called at the end of training.
+        """
+        if args.should_save:
+            model = kwargs.pop("model")
+            pissa_init_dir = os.path.join(args.output_dir, "pissa_init")
+            pissa_backup_dir = os.path.join(args.output_dir, "pissa_backup")
+            pissa_convert_dir = os.path.join(args.output_dir, "pissa_converted")
+            logger.info("Converted PiSSA adapter will be saved at: {}.".format(pissa_convert_dir))
+            # 1. save a pissa backup with init_lora_weights: True
+            # 2. save a converted lora with init_lora_weights: pissa
+            # 3. load the pissa backup with init_lora_weights: True
+            # 4. delete the initial adapter and change init_lora_weights to pissa
+            if isinstance(model, PeftModel):
+                init_lora_weights = getattr(model.peft_config["default"], "init_lora_weights")
+                setattr(model.peft_config["default"], "init_lora_weights", True)
+                model.save_pretrained(pissa_backup_dir, safe_serialization=args.save_safetensors)
+                setattr(model.peft_config["default"], "init_lora_weights", init_lora_weights)
+                model.save_pretrained(
+                    pissa_convert_dir, safe_serialization=args.save_safetensors, convert_pissa_to_lora=pissa_init_dir
+                )
+                model.load_adapter(pissa_backup_dir, "default", is_trainable=True)
+                model.set_adapter("default")
+                model.delete_adapter("pissa_init")
+                setattr(model.peft_config["default"], "init_lora_weights", init_lora_weights)
+
+
 class LogCallback(TrainerCallback):
-    def __init__(self, output_dir: str) -> None:
+    def __init__(self) -> None:
         r"""
         Initializes a callback for logging training and evaluation status.
         """
@@ -70,7 +191,7 @@ class LogCallback(TrainerCallback):
         self.webui_mode = os.environ.get("LLAMABOARD_ENABLED", "0").lower() in ["true", "1"]
         if self.webui_mode:
             signal.signal(signal.SIGABRT, self._set_abort)
-            self.logger_handler = LoggerHandler(output_dir)
+            self.logger_handler = LoggerHandler(os.environ.get("LLAMABOARD_WORKDIR"))
             logging.root.addHandler(self.logger_handler)
             transformers.logging.add_handler(self.logger_handler)
 
diff --git a/src/llamafactory/train/dpo/trainer.py b/src/llamafactory/train/dpo/trainer.py
index ed4fd5d9..e45467d6 100644
--- a/src/llamafactory/train/dpo/trainer.py
+++ b/src/llamafactory/train/dpo/trainer.py
@@ -15,7 +15,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
 import warnings
 from collections import defaultdict
 from contextlib import nullcontext
@@ -29,7 +28,8 @@ from trl import DPOTrainer
 from trl.trainer import disable_dropout_in_model
 
 from ...extras.constants import IGNORE_INDEX
-from ..trainer_utils import convert_pissa_adapter, create_custom_optimzer, create_custom_scheduler, get_batch_logps
+from ..callbacks import PissaConvertCallback, SaveProcessorCallback
+from ..trainer_utils import create_custom_optimzer, create_custom_scheduler, get_batch_logps
 
 
 if TYPE_CHECKING:
@@ -54,7 +54,6 @@ class CustomDPOTrainer(DPOTrainer):
                 disable_dropout_in_model(ref_model)
 
         self.finetuning_args = finetuning_args
-        self.processor = processor
         self.reference_free = False
         self.use_dpo_data_collator = True  # hack to avoid warning
         self.generate_during_eval = False  # disable at evaluation
@@ -92,14 +91,17 @@ class CustomDPOTrainer(DPOTrainer):
                 self.ref_model = self.accelerator.prepare_model(self.ref_model, evaluation_mode=True)
                 self.ref_model.eval()
 
+        if processor is not None:
+            self.add_callback(SaveProcessorCallback(processor))
+
         if finetuning_args.pissa_convert:
-            self.save_model(os.path.join(self.args.output_dir, "pissa_init"))
+            self.callback_handler.add_callback(PissaConvertCallback)
 
         if finetuning_args.use_badam:
             from badam import BAdamCallback, clip_grad_norm_old_version
 
             self.accelerator.clip_grad_norm_ = MethodType(clip_grad_norm_old_version, self.accelerator)
-            self.callback_handler.add_callback(BAdamCallback)
+            self.add_callback(BAdamCallback)
 
     def create_optimizer(self) -> "torch.optim.Optimizer":
         if self.optimizer is None:
@@ -112,15 +114,6 @@ class CustomDPOTrainer(DPOTrainer):
         create_custom_scheduler(self.args, num_training_steps, optimizer)
         return super().create_scheduler(num_training_steps, optimizer)
 
-    def _save(self, output_dir: Optional[str] = None, state_dict: Optional[Dict[str, "torch.Tensor"]] = None) -> None:
-        super()._save(output_dir, state_dict)
-        output_dir = output_dir if output_dir is not None else self.args.output_dir
-        if self.finetuning_args.pissa_convert:
-            convert_pissa_adapter(output_dir, state_dict, self.accelerator, self.model, self.args)
-
-        if self.processor is not None:
-            getattr(self.processor, "image_processor").save_pretrained(output_dir)
-
     def odds_ratio_loss(self, chosen_logps: "torch.Tensor", rejected_logps: "torch.Tensor") -> "torch.Tensor":
         r"""
         Computes ORPO's odds ratio (OR) loss for batched log probabilities of the policy model.
diff --git a/src/llamafactory/train/kto/trainer.py b/src/llamafactory/train/kto/trainer.py
index c2edf95a..460311e4 100644
--- a/src/llamafactory/train/kto/trainer.py
+++ b/src/llamafactory/train/kto/trainer.py
@@ -27,6 +27,7 @@ from trl import KTOTrainer
 from trl.trainer import disable_dropout_in_model
 
 from ...extras.constants import IGNORE_INDEX
+from ..callbacks import SaveProcessorCallback
 from ..trainer_utils import create_custom_optimzer, create_custom_scheduler, get_batch_logps
 
 
@@ -53,7 +54,6 @@ class CustomKTOTrainer(KTOTrainer):
                 disable_dropout_in_model(ref_model)
 
         self.finetuning_args = finetuning_args
-        self.processor = processor
         self.reference_free = False
         self.use_dpo_data_collator = True  # hack to avoid warning
         self.generate_during_eval = False  # disable at evaluation
@@ -90,11 +90,14 @@ class CustomKTOTrainer(KTOTrainer):
                 self.ref_model = self.accelerator.prepare_model(self.ref_model, evaluation_mode=True)
                 self.ref_model.eval()
 
+        if processor is not None:
+            self.add_callback(SaveProcessorCallback(processor))
+
         if finetuning_args.use_badam:
             from badam import BAdamCallback, clip_grad_norm_old_version
 
             self.accelerator.clip_grad_norm_ = MethodType(clip_grad_norm_old_version, self.accelerator)
-            self.callback_handler.add_callback(BAdamCallback)
+            self.add_callback(BAdamCallback)
 
     def create_optimizer(self) -> "torch.optim.Optimizer":
         if self.optimizer is None:
@@ -113,12 +116,6 @@ class CustomKTOTrainer(KTOTrainer):
         """
         return Trainer._get_train_sampler(self)
 
-    def _save(self, output_dir: Optional[str] = None, state_dict: Optional[Dict[str, "torch.Tensor"]] = None) -> None:
-        super()._save(output_dir, state_dict)
-        output_dir = output_dir if output_dir is not None else self.args.output_dir
-        if self.processor is not None:
-            getattr(self.processor, "image_processor").save_pretrained(output_dir)
-
     def forward(
         self, model: "PreTrainedModel", batch: Dict[str, "torch.Tensor"], prefix: Literal["", "kl_"] = ""
     ) -> Tuple["torch.Tensor", "torch.Tensor"]:
diff --git a/src/llamafactory/train/ppo/trainer.py b/src/llamafactory/train/ppo/trainer.py
index c5f6e175..57f0b848 100644
--- a/src/llamafactory/train/ppo/trainer.py
+++ b/src/llamafactory/train/ppo/trainer.py
@@ -27,6 +27,7 @@ from accelerate.utils import DistributedDataParallelKwargs
 from tqdm import tqdm
 from transformers import GenerationConfig, Trainer, TrainerControl, TrainerState
 from transformers.optimization import get_scheduler
+from transformers.trainer_callback import CallbackHandler
 from transformers.trainer_pt_utils import remove_dummy_checkpoint
 from transformers.trainer_utils import PREFIX_CHECKPOINT_DIR
 from transformers.utils import SAFE_WEIGHTS_NAME, WEIGHTS_NAME
@@ -34,9 +35,9 @@ from trl import PPOConfig, PPOTrainer
 from trl.core import PPODecorators, logprobs_from_logits
 from trl.models.utils import unwrap_model_for_generation
 
-from ...extras.callbacks import FixValueHeadModelCallback, LogCallback
 from ...extras.logging import get_logger
 from ...extras.misc import AverageMeter, count_parameters, get_current_device, get_logits_processor
+from ..callbacks import FixValueHeadModelCallback, SaveProcessorCallback
 from ..trainer_utils import create_custom_optimzer, create_custom_scheduler
 from .ppo_utils import dump_layernorm, get_rewards_from_server, replace_model, restore_layernorm
 
@@ -131,7 +132,6 @@ class CustomPPOTrainer(PPOTrainer, Trainer):
         self.finetuning_args = finetuning_args
         self.reward_model = reward_model
         self.current_device = get_current_device()  # patch for deepspeed training
-        self.processor = processor
 
         self.generation_config = GenerationConfig(
             pad_token_id=self.tokenizer.pad_token_id,
@@ -143,8 +143,9 @@ class CustomPPOTrainer(PPOTrainer, Trainer):
         self.control = TrainerControl()
         self.is_deepspeed_enabled = getattr(self.accelerator.state, "deepspeed_plugin", None) is not None
         self.is_fsdp_enabled = getattr(self.accelerator.state, "fsdp_plugin", None) is not None
-        self.log_callback, self.save_callback = callbacks[0], callbacks[1]
-        assert isinstance(self.log_callback, LogCallback) and isinstance(self.save_callback, FixValueHeadModelCallback)
+        self.callback_handler = CallbackHandler(
+            [callbacks], self.accelerator.unwrap_model(self.model), self.tokenizer, self.optimizer, self.lr_scheduler
+        )
 
         if self.args.max_steps > 0:
             logger.info("max_steps is given, it will override any value given in num_train_epochs")
@@ -165,11 +166,16 @@ class CustomPPOTrainer(PPOTrainer, Trainer):
             else:
                 self.reward_model = self.accelerator.prepare_model(self.reward_model, evaluation_mode=True)
 
+        self.add_callback(FixValueHeadModelCallback)
+
+        if processor is not None:
+            self.add_callback(SaveProcessorCallback(processor))
+
         if finetuning_args.use_badam:
             from badam import BAdamCallback, clip_grad_norm_old_version
 
             self.accelerator.clip_grad_norm_ = MethodType(clip_grad_norm_old_version, self.accelerator)
-            self.callback_handler.add_callback(BAdamCallback)
+            self.add_callback(BAdamCallback)
 
     def ppo_train(self, resume_from_checkpoint: Optional[str] = None) -> None:
         r"""
@@ -219,7 +225,7 @@ class CustomPPOTrainer(PPOTrainer, Trainer):
         dataiter = iter(self.dataloader)
         loss_meter = AverageMeter()
         reward_meter = AverageMeter()
-        self.log_callback.on_train_begin(self.args, self.state, self.control)
+        self.callback_handler.on_train_begin(self.args, self.state, self.control)
 
         for step in tqdm(range(max_steps), disable=not self.is_local_process_zero()):
             try:
@@ -257,7 +263,7 @@ class CustomPPOTrainer(PPOTrainer, Trainer):
                     logger.warning("Failed to save stats due to unknown errors.")
 
             self.state.global_step += 1
-            self.log_callback.on_step_end(self.args, self.state, self.control)
+            self.callback_handler.on_step_end(self.args, self.state, self.control)
 
             if self.is_local_process_zero() and (step + 1) % self.args.logging_steps == 0:
                 logs = dict(
@@ -269,7 +275,7 @@ class CustomPPOTrainer(PPOTrainer, Trainer):
                 tqdm.write(str(logs))
                 logs["step"] = step
                 self.state.log_history.append(logs)
-                self.log_callback.on_log(self.args, self.state, self.control)
+                self.callback_handler.on_log(self.args, self.state, self.control, logs)
                 loss_meter.reset()
                 reward_meter.reset()
 
@@ -277,17 +283,12 @@ class CustomPPOTrainer(PPOTrainer, Trainer):
                 self.save_model(
                     os.path.join(self.args.output_dir, "{}-{}".format(PREFIX_CHECKPOINT_DIR, self.state.global_step))
                 )
-                self.save_callback.on_save(
-                    self.args, self.state, self.control, model=self.accelerator.unwrap_model(self.model)
-                )
+                self.callback_handler.on_save(self.args, self.state, self.control)
 
             if self.control.should_epoch_stop or self.control.should_training_stop:
                 break
 
-        self.log_callback.on_train_end(self.args, self.state, self.control)
-        self.save_callback.on_train_end(
-            self.args, self.state, self.control, model=self.accelerator.unwrap_model(self.model)
-        )
+        self.callback_handler.on_train_end(self.args, self.state, self.control)
 
     def create_optimizer(
         self,
@@ -505,7 +506,3 @@ class CustomPPOTrainer(PPOTrainer, Trainer):
 
         elif self.args.should_save:
             self._save(output_dir)
-
-        if self.processor is not None and self.args.should_save:
-            output_dir = output_dir if output_dir is not None else self.args.output_dir
-            getattr(self.processor, "image_processor").save_pretrained(output_dir)
diff --git a/src/llamafactory/train/ppo/workflow.py b/src/llamafactory/train/ppo/workflow.py
index 4f4d2820..651296f3 100644
--- a/src/llamafactory/train/ppo/workflow.py
+++ b/src/llamafactory/train/ppo/workflow.py
@@ -20,10 +20,9 @@ from typing import TYPE_CHECKING, List, Optional
 from transformers import DataCollatorWithPadding
 
 from ...data import get_dataset
-from ...extras.callbacks import FixValueHeadModelCallback
-from ...extras.misc import fix_valuehead_checkpoint
 from ...extras.ploting import plot_loss
 from ...model import load_model, load_tokenizer
+from ..callbacks import FixValueHeadModelCallback, fix_valuehead_checkpoint
 from ..trainer_utils import create_ref_model, create_reward_model
 from .trainer import CustomPPOTrainer
 
@@ -75,6 +74,7 @@ def run_ppo(
         ppo_trainer.save_model()
         if training_args.should_save:
             fix_valuehead_checkpoint(model, training_args.output_dir, training_args.save_safetensors)
+
         ppo_trainer.save_state()  # must be called after save_model to have a folder
         if ppo_trainer.is_world_process_zero() and finetuning_args.plot_loss:
             plot_loss(training_args.output_dir, keys=["loss", "reward"])
diff --git a/src/llamafactory/train/pt/trainer.py b/src/llamafactory/train/pt/trainer.py
index b6fb161d..e8f180a6 100644
--- a/src/llamafactory/train/pt/trainer.py
+++ b/src/llamafactory/train/pt/trainer.py
@@ -12,14 +12,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
 from types import MethodType
-from typing import TYPE_CHECKING, Dict, Optional
+from typing import TYPE_CHECKING, Optional
 
 from transformers import Trainer
 
 from ...extras.logging import get_logger
-from ..trainer_utils import convert_pissa_adapter, create_custom_optimzer, create_custom_scheduler
+from ..callbacks import PissaConvertCallback, SaveProcessorCallback
+from ..trainer_utils import create_custom_optimzer, create_custom_scheduler
 
 
 if TYPE_CHECKING:
@@ -42,16 +42,18 @@ class CustomTrainer(Trainer):
     ) -> None:
         super().__init__(**kwargs)
         self.finetuning_args = finetuning_args
-        self.processor = processor
+
+        if processor is not None:
+            self.add_callback(SaveProcessorCallback(processor))
 
         if finetuning_args.pissa_convert:
-            self.save_model(os.path.join(self.args.output_dir, "pissa_init"))
+            self.add_callback(PissaConvertCallback)
 
         if finetuning_args.use_badam:
             from badam import BAdamCallback, clip_grad_norm_old_version
 
             self.accelerator.clip_grad_norm_ = MethodType(clip_grad_norm_old_version, self.accelerator)
-            self.callback_handler.add_callback(BAdamCallback)
+            self.add_callback(BAdamCallback)
 
     def create_optimizer(self) -> "torch.optim.Optimizer":
         if self.optimizer is None:
@@ -63,12 +65,3 @@ class CustomTrainer(Trainer):
     ) -> "torch.optim.lr_scheduler.LRScheduler":
         create_custom_scheduler(self.args, num_training_steps, optimizer)
         return super().create_scheduler(num_training_steps, optimizer)
-
-    def _save(self, output_dir: Optional[str] = None, state_dict: Optional[Dict[str, "torch.Tensor"]] = None) -> None:
-        super()._save(output_dir, state_dict)
-        output_dir = output_dir if output_dir is not None else self.args.output_dir
-        if self.finetuning_args.pissa_convert:
-            convert_pissa_adapter(output_dir, state_dict, self.accelerator, self.model, self.args)
-
-        if self.processor is not None:
-            getattr(self.processor, "image_processor").save_pretrained(output_dir)
diff --git a/src/llamafactory/train/rm/trainer.py b/src/llamafactory/train/rm/trainer.py
index 70c2e9a0..5eceead8 100644
--- a/src/llamafactory/train/rm/trainer.py
+++ b/src/llamafactory/train/rm/trainer.py
@@ -46,6 +46,7 @@ import torch
 from transformers import Trainer
 
 from ...extras.logging import get_logger
+from ..callbacks import FixValueHeadModelCallback, PissaConvertCallback, SaveProcessorCallback
 from ..trainer_utils import create_custom_optimzer, create_custom_scheduler
 
 
@@ -69,13 +70,20 @@ class PairwiseTrainer(Trainer):
     ) -> None:
         super().__init__(**kwargs)
         self.finetuning_args = finetuning_args
-        self.processor = processor
         self.can_return_loss = True  # override property to return eval_loss
+        self.add_callback(FixValueHeadModelCallback)
+
+        if processor is not None:
+            self.add_callback(SaveProcessorCallback(processor))
+
+        if finetuning_args.pissa_convert:
+            self.add_callback(PissaConvertCallback)
+
         if finetuning_args.use_badam:
             from badam import BAdamCallback, clip_grad_norm_old_version
 
             self.accelerator.clip_grad_norm_ = MethodType(clip_grad_norm_old_version, self.accelerator)
-            self.callback_handler.add_callback(BAdamCallback)
+            self.add_callback(BAdamCallback)
 
     def create_optimizer(self) -> "torch.optim.Optimizer":
         if self.optimizer is None:
@@ -88,12 +96,6 @@ class PairwiseTrainer(Trainer):
         create_custom_scheduler(self.args, num_training_steps, optimizer)
         return super().create_scheduler(num_training_steps, optimizer)
 
-    def _save(self, output_dir: Optional[str] = None, state_dict: Optional[Dict[str, "torch.Tensor"]] = None) -> None:
-        super()._save(output_dir, state_dict)
-        output_dir = output_dir if output_dir is not None else self.args.output_dir
-        if self.processor is not None:
-            getattr(self.processor, "image_processor").save_pretrained(output_dir)
-
     def compute_loss(
         self, model: "PreTrainedModel", inputs: Dict[str, torch.Tensor], return_outputs: bool = False
     ) -> Union[torch.Tensor, Tuple[torch.Tensor, List[torch.Tensor]]]:
@@ -164,4 +166,5 @@ class PairwiseTrainer(Trainer):
             res: List[str] = []
             for c_score, r_score in zip(chosen_scores, rejected_scores):
                 res.append(json.dumps({"chosen": round(float(c_score), 2), "rejected": round(float(r_score), 2)}))
+
             writer.write("\n".join(res))
diff --git a/src/llamafactory/train/rm/workflow.py b/src/llamafactory/train/rm/workflow.py
index 6f24e964..e0b32b77 100644
--- a/src/llamafactory/train/rm/workflow.py
+++ b/src/llamafactory/train/rm/workflow.py
@@ -40,10 +40,9 @@
 from typing import TYPE_CHECKING, List, Optional
 
 from ...data import PairwiseDataCollatorWithPadding, get_dataset, split_dataset
-from ...extras.callbacks import FixValueHeadModelCallback
-from ...extras.misc import fix_valuehead_checkpoint
 from ...extras.ploting import plot_loss
 from ...model import load_model, load_tokenizer
+from ..callbacks import fix_valuehead_checkpoint
 from ..trainer_utils import create_modelcard_and_push
 from .metric import compute_accuracy
 from .trainer import PairwiseTrainer
@@ -77,7 +76,7 @@ def run_rm(
         args=training_args,
         finetuning_args=finetuning_args,
         data_collator=data_collator,
-        callbacks=callbacks + [FixValueHeadModelCallback()],
+        callbacks=callbacks,
         compute_metrics=compute_accuracy,
         **tokenizer_module,
         **split_dataset(dataset, data_args, training_args),
@@ -89,6 +88,7 @@ def run_rm(
         trainer.save_model()
         if training_args.should_save:
             fix_valuehead_checkpoint(model, training_args.output_dir, training_args.save_safetensors)
+
         trainer.log_metrics("train", train_result.metrics)
         trainer.save_metrics("train", train_result.metrics)
         trainer.save_state()
diff --git a/src/llamafactory/train/sft/trainer.py b/src/llamafactory/train/sft/trainer.py
index f0a86dff..06bd2b6b 100644
--- a/src/llamafactory/train/sft/trainer.py
+++ b/src/llamafactory/train/sft/trainer.py
@@ -26,7 +26,8 @@ from transformers import Seq2SeqTrainer
 
 from ...extras.constants import IGNORE_INDEX
 from ...extras.logging import get_logger
-from ..trainer_utils import convert_pissa_adapter, create_custom_optimzer, create_custom_scheduler
+from ..callbacks import PissaConvertCallback, SaveProcessorCallback
+from ..trainer_utils import create_custom_optimzer, create_custom_scheduler
 
 
 if TYPE_CHECKING:
@@ -50,19 +51,18 @@ class CustomSeq2SeqTrainer(Seq2SeqTrainer):
     ) -> None:
         super().__init__(**kwargs)
         self.finetuning_args = finetuning_args
-        self.processor = processor
+
+        if processor is not None:
+            self.add_callback(SaveProcessorCallback(processor))
 
         if finetuning_args.pissa_convert:
-            if self.is_deepspeed_enabled:
-                self.accelerator.deepspeed_config = self.accelerator.state.deepspeed_plugin.deepspeed_config
-                self.deepspeed = self._wrap_model(self.model_wrapped)
-            self.save_model(os.path.join(self.args.output_dir, "pissa_init"))
+            self.add_callback(PissaConvertCallback)
 
         if finetuning_args.use_badam:
             from badam import BAdamCallback, clip_grad_norm_old_version
 
             self.accelerator.clip_grad_norm_ = MethodType(clip_grad_norm_old_version, self.accelerator)
-            self.callback_handler.add_callback(BAdamCallback)
+            self.add_callback(BAdamCallback)
 
     def create_optimizer(self) -> "torch.optim.Optimizer":
         if self.optimizer is None:
@@ -75,15 +75,6 @@ class CustomSeq2SeqTrainer(Seq2SeqTrainer):
         create_custom_scheduler(self.args, num_training_steps, optimizer)
         return super().create_scheduler(num_training_steps, optimizer)
 
-    def _save(self, output_dir: Optional[str] = None, state_dict: Optional[Dict[str, "torch.Tensor"]] = None) -> None:
-        super()._save(output_dir, state_dict)
-        output_dir = output_dir if output_dir is not None else self.args.output_dir
-        if self.finetuning_args.pissa_convert:
-            convert_pissa_adapter(output_dir, state_dict, self.accelerator, self.model, self.args)
-
-        if self.processor is not None:
-            getattr(self.processor, "image_processor").save_pretrained(output_dir)
-
     def prediction_step(
         self,
         model: "torch.nn.Module",
diff --git a/src/llamafactory/train/trainer_utils.py b/src/llamafactory/train/trainer_utils.py
index 21d41c36..4b581691 100644
--- a/src/llamafactory/train/trainer_utils.py
+++ b/src/llamafactory/train/trainer_utils.py
@@ -17,11 +17,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
 from typing import TYPE_CHECKING, Callable, Dict, List, Optional, Tuple, Union
 
 import torch
-from peft import PeftModel
 from transformers import Trainer
 from transformers.integrations import is_deepspeed_zero3_enabled
 from transformers.optimization import get_scheduler
@@ -40,7 +38,6 @@ if is_galore_available():
 
 
 if TYPE_CHECKING:
-    from accelerate import Accelerator
     from transformers import PreTrainedModel, Seq2SeqTrainingArguments
     from trl import AutoModelForCausalLMWithValueHead
 
@@ -175,51 +172,6 @@ def create_reward_model(
         return reward_model
 
 
-def convert_pissa_adapter(
-    output_dir: str,
-    state_dict: Dict[str, "torch.Tensor"],
-    accelerator: "Accelerator",
-    model: "PreTrainedModel",
-    training_args: "Seq2SeqTrainingArguments",
-) -> None:
-    r"""
-    Converts the PiSSA adapter to a LoRA adapter.
-    """
-    pissa_init_dir = os.path.join(training_args.output_dir, "pissa_init")
-    pissa_backup_dir = os.path.join(output_dir, "pissa_backup")
-    if output_dir == pissa_init_dir:
-        logger.info("Initial PiSSA adatper will be saved at: {}.".format(pissa_init_dir))
-        unwrapped_model = accelerator.unwrap_model(model)
-        if isinstance(unwrapped_model, PeftModel):
-            init_lora_weights = getattr(unwrapped_model.peft_config["default"], "init_lora_weights")
-            setattr(unwrapped_model.peft_config["default"], "init_lora_weights", True)
-            unwrapped_model.save_pretrained(
-                output_dir,
-                state_dict=state_dict,
-                safe_serialization=training_args.save_safetensors,
-            )
-            setattr(unwrapped_model.peft_config["default"], "init_lora_weights", init_lora_weights)
-
-    elif output_dir == training_args.output_dir:  # at the end of training
-        logger.info("Converted PiSSA adapter will be saved at: {}.".format(output_dir))
-        unwrapped_model = accelerator.unwrap_model(model)
-        if isinstance(unwrapped_model, PeftModel):  # backup the pissa adapter for further use
-            unwrapped_model.save_pretrained(
-                pissa_backup_dir,
-                state_dict=state_dict,
-                safe_serialization=training_args.save_safetensors,
-            )
-            unwrapped_model.save_pretrained(
-                output_dir,
-                state_dict=state_dict,
-                safe_serialization=training_args.save_safetensors,
-                convert_pissa_to_lora=pissa_init_dir,
-            )
-            # TODO: the model is applied pissa again unexpectedly
-            unwrapped_model.load_adapter(pissa_backup_dir, "default", is_trainable=True)
-            unwrapped_model.set_adapter("default")
-
-
 def _get_decay_parameter_names(model: "PreTrainedModel") -> List[str]:
     r"""
     Returns a list of names of parameters with weight decay. (weights in non-layernorm layers)
diff --git a/src/llamafactory/train/tuner.py b/src/llamafactory/train/tuner.py
index a02fff22..dc982e07 100644
--- a/src/llamafactory/train/tuner.py
+++ b/src/llamafactory/train/tuner.py
@@ -20,11 +20,11 @@ import torch
 from transformers import PreTrainedModel
 
 from ..data import get_template_and_fix_tokenizer
-from ..extras.callbacks import LogCallback
 from ..extras.constants import V_HEAD_SAFE_WEIGHTS_NAME, V_HEAD_WEIGHTS_NAME
 from ..extras.logging import get_logger
 from ..hparams import get_infer_args, get_train_args
 from ..model import load_model, load_tokenizer
+from .callbacks import LogCallback
 from .dpo import run_dpo
 from .kto import run_kto
 from .ppo import run_ppo
@@ -41,8 +41,8 @@ logger = get_logger(__name__)
 
 
 def run_exp(args: Optional[Dict[str, Any]] = None, callbacks: List["TrainerCallback"] = []) -> None:
+    callbacks.append(LogCallback())
     model_args, data_args, training_args, finetuning_args, generating_args = get_train_args(args)
-    callbacks.append(LogCallback(training_args.output_dir))
 
     if finetuning_args.stage == "pt":
         run_pt(model_args, data_args, training_args, finetuning_args, callbacks)
diff --git a/src/llamafactory/webui/runner.py b/src/llamafactory/webui/runner.py
index f7fbac30..131d180d 100644
--- a/src/llamafactory/webui/runner.py
+++ b/src/llamafactory/webui/runner.py
@@ -310,6 +310,7 @@ class Runner:
 
             env = deepcopy(os.environ)
             env["LLAMABOARD_ENABLED"] = "1"
+            env["LLAMABOARD_WORKDIR"] = args["output_dir"]
             if args.get("deepspeed", None) is not None:
                 env["FORCE_TORCHRUN"] = "1"
 
diff --git a/src/llamafactory/webui/utils.py b/src/llamafactory/webui/utils.py
index 14616ac4..6e5fdbe4 100644
--- a/src/llamafactory/webui/utils.py
+++ b/src/llamafactory/webui/utils.py
@@ -38,12 +38,15 @@ def abort_process(pid: int) -> None:
     r"""
     Aborts the processes recursively in a bottom-up way.
     """
-    children = psutil.Process(pid).children()
-    if children:
-        for child in children:
-            abort_process(child.pid)
+    try:
+        children = psutil.Process(pid).children()
+        if children:
+            for child in children:
+                abort_process(child.pid)
 
-    os.kill(pid, signal.SIGABRT)
+        os.kill(pid, signal.SIGABRT)
+    except Exception:
+        pass
 
 
 def can_quantize(finetuning_type: str) -> "gr.Dropdown":