---
title: Config Reference
description: A complete list of all configuration options.
---

```yaml
# This is the huggingface model that contains *.pt, *.safetensors, or *.bin files
# This can also be a relative path to a model on disk
base_model: ./llama-7b-hf
# You can specify an ignore pattern if the model repo contains more than 1 model type (*.pt, etc)
base_model_ignore_patterns:
# If the base_model repo on hf hub doesn't include configuration .json files,
# You can set that here, or leave this empty to default to base_model
base_model_config: ./llama-7b-hf
# You can specify to choose a specific model revision from huggingface hub
revision_of_model:
# Optional tokenizer configuration path in case you want to use a different tokenizer
# than the one defined in the base model
tokenizer_config:
# If you want to specify the type of model to load, AutoModelForCausalLM is a good choice too
model_type: AutoModelForCausalLM
# Corresponding tokenizer for the model AutoTokenizer is a good choice
tokenizer_type: AutoTokenizer
# Trust remote code for untrusted source
trust_remote_code:
# use_fast option for tokenizer loading from_pretrained, default to True
tokenizer_use_fast:
# Whether to use the legacy tokenizer setting, defaults to True
tokenizer_legacy:
# Resize the model embeddings when new tokens are added to multiples of 32
# This is reported to improve training speed on some models
resize_token_embeddings_to_32x:
# Optional[bool] Whether to shrink the embeddings to len(tokenizer). By default, we won't shrink.
shrink_embeddings:
# Optional[bool] Don't upcast the embeddings to float32 when using PEFT. Useful for low-VRAM GPUs
embeddings_skip_upcast:
# Whether to load the model with randomly initialized weights. Useful for
# pre-training a model from scratch or debugging purposes.
random_init_weights:

# (Internal use only)
# Used to identify which the model is based on
is_falcon_derived_model:
is_llama_derived_model:
is_qwen_derived_model:
# Please note that if you set this to true, `padding_side` will be set to "left" by default
is_mistral_derived_model:

# optional overrides to the base model configuration
overrides_of_model_config:
  # RoPE Scaling https://github.com/huggingface/transformers/pull/24653
  rope_scaling:
    type: # linear | dynamic
    factor: # float

# optional overrides the base model loading from_pretrained
overrides_of_model_kwargs:
  # use_cache: False

# optional overrides to the bnb 4bit quantization configuration
# https://huggingface.co/docs/transformers/main/main_classes/quantization#transformers.BitsAndBytesConfig
bnb_config_kwargs:
  # These are default values
  llm_int8_has_fp16_weight: false
  bnb_4bit_quant_type: nf4
  bnb_4bit_use_double_quant: true

# quantization aware training
qat:
  activation_dtype: # Optional[str] = "int8". Fake quantization layout to use for activation quantization. Valid options are "int4" and "int8"
  weight_dtype: # Optional[str] = "int8". Fake quantization layout to use for weight quantization. Valid options are "int4" and "int8"
  group_size: # Optional[int] = 32. The number of elements in each group for per-group fake quantization
  fake_quant_after_n_steps: # Optional[int] = None. The number of steps to apply fake quantization after

# post-training quantization
quantization:
  weight_dtype: # Optional[str] = "int8". Fake quantization layout to use for weight quantization. Valid options are uintX for X in [1, 2, 3, 4, 5, 6, 7], or int4, or int8
  activation_dtype: # Optional[str] = "int8". Fake quantization layout to use for activation quantization. Valid options are "int4" and "int8"
  group_size: # Optional[int] = 32. The number of elements in each group for per-group fake quantization
  quantize_embedding: # Optional[bool] = False. Whether to quantize the embedding layer.


# Whether you are training a 4-bit GPTQ quantized model
gptq: true

# This will attempt to quantize the model down to 8 bits and use adam 8 bit optimizer
load_in_8bit: true
# Use bitsandbytes 4 bit
load_in_4bit:

# Use CUDA bf16
bf16: true # bool or 'full' for `bf16_full_eval`, or 'auto' for automatic detection. require >=ampere
# Use CUDA fp16
fp16: true
# Use CUDA tf32
tf32: true # require >=ampere
# Note: if bf16 is set to 'auto', and fp16 is set to true, we will prefer the explict fp16 setting

# No AMP (automatic mixed precision)
bfloat16: true # require >=ampere
float16: true

# Limit the memory for all available GPUs to this amount (if an integer, expressed in gigabytes); default: unset
gpu_memory_limit: 20GiB
# Do the LoRA/PEFT loading on CPU -- this is required if the base model is so large it takes up most or all of the available GPU VRAM, e.g. during a model and LoRA merge
lora_on_cpu: true

# List[str]. Add plugins to extend the pipeline.
# See `src/axolotl/integrations` for the available plugins or doc below for more details.
# https://docs.axolotl.ai/docs/custom_integrations.html
plugins:
  # - axolotl.integrations.cut_cross_entropy.CutCrossEntropyPlugin

# A list of one or more datasets to finetune the model with
# See https://docs.axolotl.ai/docs/dataset_loading.html for guide on loading datasets
# See https://docs.axolotl.ai/docs/dataset-formats/ for guide on dataset formats
datasets:
  # HuggingFace dataset repo | s3:// | gs:// | path to local file or directory
  - path: vicgalle/alpaca-gpt4
    # The type of prompt to use for training. [alpaca, gpteacher, oasst, reflection]
    type: alpaca # format | format:<prompt_style> (chat/instruct) | <prompt_strategies>.load_<load_fn>
    ds_type: # Optional[str] (json|arrow|parquet|text|csv) defines the datatype when path is a file
    data_files: # Optional[str] path to source data files

    shards: # Optional[int] split dataset into N pieces (use with shards_idx)
    shards_idx: # Optional[int] = 0 the index of sharded dataset to use

    preprocess_shards: # Optional[int] process dataset in N sequential chunks for memory efficiency (exclusive with `shards`)

    name: # Optional[str] name of dataset configuration to load
    split: train # Optional[str] name of dataset split to load from
    revision: # Optional[str] The specific revision of the dataset to use when loading from the Hugging Face Hub. This can be a commit hash, tag, or branch name. If not specified, the latest version will be used. This parameter is ignored for local datasets.
    trust_remote_code: # Optional[bool] Trust remote code for untrusted source

  # Custom user instruction prompt
  - path: repo
    type:
      # The below are defaults. only set what's needed if you use a different column name.
      system_prompt: ""
      system_format: "{system}"
      field_system: system
      field_instruction: instruction
      field_input: input
      field_output: output

      # Customizable to be single line or multi-line
      # Use {instruction}/{input} as key to be replaced
      # 'format' can include {input}
      format: |-
        User: {instruction} {input}
        Assistant:
      # 'no_input_format' cannot include {input}
      no_input_format: "{instruction} "

      # For `completion` datsets only, uses the provided field instead of `text` column
      field:

  # Using chat template
  - path: ...
    # Set type to `chat_template` to use this strategy
    type: chat_template
    # Specify the name of the chat template to use
    # The name of the chat template to use for training, following values are supported:
    # - tokenizer_default: Uses the chat template that is available in the tokenizer_config.json. If the chat template is not available in the tokenizer, it will raise an error. This is the default.
    # - alpaca/inst/chatml/gemma/cohere/llama3/phi_3/deepseek_v2/jamba: These chat templates are available in the axolotl codebase at src/axolotl/utils/chat_templates.py
    # - tokenizer_default_fallback_*: where * is the name of the chat template to fallback to if the tokenizer does not have a chat template else default to tokenizer. E.g. tokenizer_default_fallback_chatml.
    # - jinja: Uses a custom jinja template for the chat template. The custom jinja template should be provided in the chat_template_jinja field.
    chat_template: tokenizer_default

    # Custom jinja chat template. Used only if `chat_template: jinja` or empty.
    chat_template_jinja:

    # Key containing the messages (default: "messages")
    field_messages: messages

    # Key containing the system message (default: "system")
    # If the system message is not present in the dataset sample, it will be loaded from the field_system property.
    field_system: system

    # Mapping of properties from the input dataset to the chat template.
    # (default: message_property_mappings={'role':'role', 'content':'content'})
    # If a property exists in the template but not in this mapping, the system will attempt
    # to load it directly from the message using the property name as the key.
    # Example: In the mapping below, 'from' is loaded from input dataset and used as 'role',
    # while 'value' is loaded and used as 'content' in the chat template.
    message_property_mappings:
      role: from
      content: value
      # ...

    # Optional[Dict[str, List]]. Roles mapping in the messages.
    # The format is {target_role: [source_roles]}. All source roles will be mapped to the target role.
    # The default is:
    roles:
      user: ["human", "user"]
      assistant: ["gpt", "assistant"]
      system: ["system"]
      tool: ["tool"]

    # Optional[bool]. Whether to drop the system turn from the dataset. Only works with chat_template.
    # This does not drop the default system message from chat_template if it exists. If you wish to,
    # we recommend using a custom jinja template with the default system message removed or
    # adding a system turn with empty content.
    drop_system_message:

    # Optional[bool]. (for Qwen3 template only) Whether to split the assistant content based on a reasoning trace inside delimited tags
    # See example at `docs/dataset-formats/conversation.qmd`
    split_thinking:

    # IMPORTANT: The following fields determine which parts of the conversation to train on.
    # Priority order: message_field_training > message_field_training_detail > train_on_inputs or role in roles_to_train
    # See examples at `docs/dataset-formats/conversation.qmd`
    # Note: If the below 5 fields are empty, defaults to training only on the last message.

    # Optional[List[str]]. Roles to train on. The tokens from these roles will be considered for the loss.
    roles_to_train: ["assistant"]  # default
    # Optional[str]. Which EOS tokens to train on in the conversation. Possible values are:
    # - all: train on all EOS tokens
    # - turn (default): train on the EOS token at the end of each trainable turn
    # - last: train on the last EOS token in the conversation
    # TIP: Please make sure that your `tokenizer.eos_token` is same as EOS/EOT token in template. Otherwise, set `eos_token` under `special_tokens`.
    train_on_eos: turn
    # Optional[str]. Which EOT (End-of-Turn) tokens to train on in the conversation. Possible values are:
    # - all: train on all EOT tokens
    # - turn: train on the EOT token at the end of each trainable turn
    # - last: train on the last EOT token in the conversation
    # If not specified, defaults to the value of train_on_eos for backward compatibility.
    train_on_eot:
    # The key in the message turn that indicates via boolean whether tokens of a turn should be considered for training. Useful to selectively train on certain turns besides the `roles_to_train`.
    message_field_training: training
    # The key in the message turn that contains the training details. Useful to selectively train on certain tokens in a turn.
    # The value of the key is a List[Dict] containing `begin_offset` (start character index in content), `end_offset` (end character index in content), and `train` (boolean whether to train).
    message_field_training_detail: train_detail


# If false, the datasets will not be shuffled and will keep their original order in `datasets`.
# The same applies to the `test_datasets` option and the `pretraining_dataset` option. Default is true.
shuffle_merged_datasets: true

# Deduplicates datasets and test_datasets with identical entries.
dataset_exact_deduplication: true

# A list of one or more datasets to eval the model with.
# You can use either test_datasets, or val_set_size, but not both.
test_datasets:
  - path: /workspace/data/eval.jsonl
    ds_type: json
    # You need to specify a split. For "json" datasets the default split is called "train".
    split: train
    type: completion
    data_files:
      - /workspace/data/eval.jsonl

# use RL training: 'dpo', 'ipo', 'kto', 'simpo', 'orpo', 'grpo'
rl:
rl_beta:  # Optional[float]. The beta parameter for the RL training.

# dpo
dpo_use_weighting:  # Optional[bool]. Whether to perform weighting.
rpo_alpha: # Optional[float]. Weighting of NLL term in loss from RPO paper.

# orpo
orpo_alpha: 0.1  # Parameter controlling the relative ratio loss weight in the ORPO loss. Passed to `beta` in `ORPOConfig` due to trl mapping.

# kto
kto_desirable_weight: # Optional[float]. Factor for desirable loss term in KTO loss.
kto_undesirable_weight: # Optional[float]. Factor for undesirable loss term in KTO loss.

# simpo
cpo_alpha: 1.0  # Weight of the BC regularizer
simpo_gamma: 0.5  # Target reward margin for the SimPO loss

# grpo
trl:
  use_vllm: # Optional[bool]. Whether to use VLLM for RL training.
  vllm_server_host: # Optional[str]. Host of the vLLM server to connect to.
  vllm_server_port: # Optional[int]. Port of the vLLM server to connect to.
  vllm_server_timeout: # Optional[int]. Total timeout (in seconds) to wait for the vLLM server to respond.
  vllm_guided_decoding_regex: # Optional[str]. Regex for vLLM guided decoding.

  beta: # Optional[float]. Beta parameter for the RL training. Same as `rl_beta`. Use
  max_completion_length: # Optional[int]. Maximum length of the completion for RL training.

  reward_funcs: # Optional[list[str]]. List of reward functions to load. Paths must be importable from current dir.
  reward_weights: # Optional[list[float]]. List of reward weights for the reward functions.

  num_generations: # Optional[int]. Number of generations to sample.
  log_completions: # Optional[bool]. Whether to log completions.
  num_completions_to_print: # Optional[int]. Number of completions to print when log_completions is True.

  sync_ref_model: # Optional[bool]. Whether to sync the reference model.
  ref_model_mixup_alpha: # Optional[float]. Mixup alpha for the reference model.
  ref_model_sync_steps: # Optional[int]. Sync steps for the reference model.
  scale_rewards: # Optional[bool]. Whether to scale rewards by their standard deviation.

  temperature: # Optional[float]. Sampling temperature for the GRPO policy.
  top_p: # Optional[float]. Top-p sampling probability for the generation policy.
  top_k: # Optional[int]. Top-k sampling for the generation policy.
  min_p: # Optional[float]. Minimum probability for the generation policy.
  repetition_penalty: # Optional[float]. Penalty for tokens that appear in prompt and generated text.

  num_iterations: # Optional[int]. Number of iterations per batch (μ) for GRPO.
  epsilon: # Optional[float]. Epsilon value for clipping in the GRPO algorithm.
  epsilon_high: # Optional[float]. Upper-bound epsilon value for clipping in the GRPO algorithm.
  use_liger_loss: # Optional[bool]. Whether to use Liger loss for GRPO.
  loss_type: # Optional[str]. Loss formulation to use. Supported values: grpo, bnpo, dr_grpo.
  mask_truncated_completions: # Optional[bool]. Whether to exclude truncated completions from loss calculation.


# reward modelling: `True` or `False`
reward_model:

# process reward modelling: `True` or `False`
process_reward_model:

# The name of the chat template to use for training, following values are supported:
# - tokenizer_default: Uses the chat template that is available in the tokenizer_config.json. If the chat template is not available in the tokenizer, it will raise an error. This is the default value.
# - alpaca/inst/chatml/gemma/cohere/llama3/phi_3/deepseek_v2/jamba: These chat templates are available in the axolotl codebase at src/axolotl/utils/chat_templates.py
# - tokenizer_default_fallback_*: where * is the name of the chat template to fallback to. E.g. tokenizer_default_fallback_chatml. This is useful when the chat template is not available in the tokenizer.
# - jinja: Uses a custom jinja template for the chat template. The custom jinja template should be provided in the chat_template_jinja field.
# The selected chat template will be saved to the tokenizer_config.json for easier inferencing
# Note: It is recommended to set train_on_inputs to true when using a chat template that is different from the model's default chat template.
chat_template: tokenizer_default
# custom jinja template for chat template. This will be only used if chat_template is set to `jinja` or `null` (in which case chat_template is automatically set to `jinja`). Default is null.
chat_template_jinja: null
# Optional[List[str]]. Custom EOT (End-of-Turn) tokens to mask/unmask during training.
# These tokens mark the boundaries between conversation turns.
# For example: ["/INST", "</s>", "[/SYSTEM_PROMPT]"]
# If not specified, defaults to just the model's eos_token.
# This is useful for templates that use multiple delimiter tokens.
eot_tokens:
  # - "</s>"
  # - "[/INST]"
  # - "[/SYSTEM_PROMPT]"
# Changes the default system message
default_system_message: You are a helpful assistant. Please give a long and detailed answer. # Currently only supports chatml.
# Axolotl attempts to save the dataset as an arrow after packing the data together so
# subsequent training attempts load faster, relative path
dataset_prepared_path: data/last_run_prepared
# Push prepared dataset to hub
push_dataset_to_hub: # Optional[str] repo_org/repo_name
# The maximum number of processes to use while preprocessing your input dataset. This defaults to `os.cpu_count()`
# if not set.
dataset_processes: # defaults to os.cpu_count() if not set
# Keep dataset in memory while preprocessing
# Only needed if cached dataset is taking too much storage
dataset_keep_in_memory:
# push checkpoints to hub
hub_model_id: # private repo path to push finetuned model
# how to push checkpoints to hub
# https://huggingface.co/docs/transformers/v4.31.0/en/main_classes/trainer#transformers.TrainingArguments.hub_strategy
hub_strategy:
# Whether to use hf `use_auth_token` for loading datasets. Useful for fetching private datasets
# Required to be true when used in combination with `push_dataset_to_hub`
hf_use_auth_token: # boolean
# How much of the dataset to set aside as evaluation. 1 = 100%, 0.50 = 50%, etc. 0 for no eval.
val_set_size: 0.04
# Num shards for whole dataset
dataset_shard_num:
# Index of shard to use for whole dataset
dataset_shard_idx:

# The maximum length of an input to train with, this should typically be less than 2048
# as most models have a token/context limit of 2048
sequence_len: 2048
# Pad inputs so each step uses constant sized buffers
# This will reduce memory fragmentation and may prevent OOMs, by re-using memory more efficiently
pad_to_sequence_len:
# Use efficient multi-packing with block diagonal attention and per sequence position_ids. Recommend set to 'true'
sample_packing:
# Set to 'false' if getting errors during eval with sample_packing on.
eval_sample_packing:
# You can set these packing optimizations AFTER starting a training at least once.
# The trainer will provide recommended values for these values.
sample_packing_eff_est:
total_num_tokens:
# Increasing the following values helps with packing, but usually only slightly (<%1.)
# The number of samples packed at a time.
sample_packing_group_size: 100000
# The number of samples which can be packed into one sequence. Increase if using a large sequence_len with many short samples.
sample_packing_bin_size: 200
sample_pack_sequentially: # Optional[bool]. Whether to pack samples sequentially.

# whether to concatenate samples during pretraining
pretraining_sample_concatenation:

curriculum_sampling: # Optional[bool]. Whether to use sequential sampling for curriculum learning

# Use batch flattening for speedups when not using sample_packing
batch_flattening:

# Passed through to transformers when loading the model when launched without accelerate
# Use `sequential` when training w/ model parallelism to limit memory
device_map:
# Defines the max memory usage per gpu on the system. Passed through to transformers when loading the model.
max_memory:

# If you want to use 'lora' or 'qlora' or leave blank to train all parameters in original model
adapter: lora
# If you already have a lora model trained that you want to load, put that here.
# This means after training, if you want to test the model, you should set this to the value of `output_dir`.
# Note that if you merge an adapter to the base model, a new subdirectory `merged` will be created under the `output_dir`.
lora_model_dir:

# LoRA hyperparameters
# For more details about the following options, see:
# https://www.anyscale.com/blog/fine-tuning-llms-lora-or-full-parameter-an-in-depth-analysis-with-llama-2
lora_r: 8
lora_alpha: 16
lora_dropout: 0.05
lora_target_modules:
  - q_proj
  - v_proj
#  - k_proj
#  - o_proj
#  - gate_proj
#  - down_proj
#  - up_proj
lora_target_linear: # If true, will target all linear modules

# List[int] | int. # The layer indices to transform, otherwise, apply to all layers
# https://huggingface.co/docs/peft/v0.15.0/en/package_reference/lora#peft.LoraConfig.layers_to_transform
peft_layers_to_transform:

# Optional[bool]. Whether to use DoRA.
# https://huggingface.co/docs/peft/v0.15.0/en/developer_guides/lora#weight-decomposed-low-rank-adaptation-dora
peft_use_dora:

# Optional[bool]. Whether to use RSLoRA.
# https://huggingface.co/docs/peft/v0.15.0/en/developer_guides/lora#rank-stabilized-lora
peft_use_rslora:

# Optional[list[tuple[int, int]]]. List of layer indices to replicate.
# https://huggingface.co/docs/peft/v0.15.0/en/developer_guides/lora#memory-efficient-layer-replication-with-lora
peft_layer_replication:

# bool | Literal["gaussian", "eva", "olora", "pissa", "pissa_niter_[number of iters]", "corda", "loftq"]
# How to initialize LoRA weights. Default to True which is MS original implementation.
# https://huggingface.co/docs/peft/v0.15.0/en/developer_guides/lora#initialization
peft_init_lora_weights:

# If you added new tokens to the tokenizer, you may need to save some LoRA modules because they need to know the new tokens.
# For LLaMA and Mistral, you need to save `embed_tokens` and `lm_head`. It may vary for other models.
# `embed_tokens` converts tokens to embeddings, and `lm_head` converts embeddings to token probabilities.
# https://github.com/huggingface/peft/issues/334#issuecomment-1561727994
lora_modules_to_save:
#  - embed_tokens
#  - lm_head

lora_fan_in_fan_out: false

# Apply custom LoRA autograd functions and activation function Triton kernels for
# speed and memory savings
# See: https://docs.axolotl.ai/docs/lora_optims.html
lora_mlp_kernel: true
lora_qkv_kernel: true
lora_o_kernel: true

# LoRA+ hyperparameters
# For more details about the following options, see:
# https://arxiv.org/abs/2402.12354  and `src/axolotl/core/train_builder.py`
loraplus_lr_ratio: # loraplus learning rate ratio lr_B / lr_A. Recommended value is 2^4.
loraplus_lr_embedding: #  loraplus learning rate for lora embedding layers. Default value is 1e-6.

peft:
  # Configuration options for loftq initialization for LoRA
  # https://huggingface.co/docs/peft/developer_guides/quantization#loftq-initialization
  loftq_config:
    loftq_bits:  # typically 4 bits

# ReLoRA configuration
# Must use either 'lora' or 'qlora' adapter, and does not support fsdp or deepspeed
relora_steps: # Number of steps per ReLoRA restart
relora_warmup_steps: # Number of per-restart warmup steps
relora_anneal_steps: # Number of anneal steps for each relora cycle
relora_prune_ratio: # threshold for optimizer magnitude when pruning
relora_cpu_offload: # True to perform lora weight merges on cpu during restarts, for modest gpu memory savings

# wandb configuration if you're using it
# Make sure your `WANDB_API_KEY` environment variable is set (recommended) or you login to wandb with `wandb login`.
wandb_mode: # "offline" to save run metadata locally and not sync to the server, "disabled" to turn off wandb
wandb_project: # Your wandb project name
wandb_entity: # A wandb Team name if using a Team
wandb_watch:
wandb_name: # Set the name of your wandb run
wandb_run_id: # Set the ID of your wandb run
wandb_log_model: # "checkpoint" to log model to wandb Artifacts every `save_steps` or "end" to log only at the end of training

# mlflow configuration if you're using it
mlflow_tracking_uri: # URI to mlflow
mlflow_experiment_name: # Your experiment name
mlflow_run_name: # Your run name
hf_mlflow_log_artifacts:  # set to true to copy each saved checkpoint on each save to mlflow artifact registry

# Comet configuration if you're using it
# Make sure your `COMET_API_KEY` environment variable is set (recommended) or you login to Comet with `comet login`.
# Check out our documentation for more details https://www.comet.com/docs/v2/api-and-sdk/python-sdk/reference/Experiment-Creation/#comet_ml.start
use_comet: # Enable or disable Comet integration.
comet_api_key: # API key for Comet. Recommended to set via `comet login`.
comet_workspace: # Workspace name in Comet. Defaults to the user's default workspace.
comet_project_name: # Project name in Comet. Defaults to Uncategorized.
comet_experiment_key: # Identifier for the experiment. Used to append data to an existing experiment or control the key of new experiments. Default to a random key.
comet_mode: # Create a new experiment ("create") or log to an existing one ("get"). Default ("get_or_create") auto-selects based on configuration.
comet_online: # Set to True to log data to Comet server, or False for offline storage. Default is True.
comet_experiment_config: # Dictionary for additional configuration settings, see the doc for more details.

# Tensorboard
use_tensorboard: # Optional[bool]

# Where to save the full-finetuned model to
output_dir: ./completed-model

# Whether to use torch.compile and which backend to use
# setting to `auto` will enable torch compile when torch>=2.5.1
torch_compile:  # Optional[Union[Literal["auto"], bool]]
torch_compile_backend:  # Optional[str]

# Training hyperparameters

# If greater than 1, backpropagation will be skipped and the gradients will be accumulated for the given number of steps.
gradient_accumulation_steps: 1
# The number of samples to include in each batch. This is the number of samples sent to each GPU.
# Batch size per gpu = micro_batch_size * gradient_accumulation_steps
micro_batch_size: 2
eval_batch_size:
num_epochs: 4
warmup_steps: 100  # cannot use with warmup_ratio
warmup_ratio: 0.05  # cannot use with warmup_steps
learning_rate: 0.00003
lr_quadratic_warmup:
logging_steps:
eval_steps: # Leave empty to eval at each epoch, integer for every N steps. float for fraction of total steps
evals_per_epoch: # number of times per epoch to run evals, mutually exclusive with eval_steps
eval_strategy: # Set to `"no"` to skip evaluation, `"epoch"` at end of each epoch, leave empty to infer from `eval_steps`.
save_strategy: # Set to `"no"` to skip checkpoint saves, `"epoch"` at end of each epoch, `"best"` when better result is achieved, leave empty to infer from `save_steps`.
save_steps: # Leave empty to save at each epoch, integer for every N steps. float for fraction of total steps
saves_per_epoch: # number of times per epoch to save a checkpoint, mutually exclusive with save_steps
save_total_limit: # Checkpoints saved at a time
save_only_model: # Save only the model weights, skipping the optimizer. Using this means you can't resume from checkpoints.
# Maximum number of iterations to train for. It precedes num_epochs which means that
# if both are set, num_epochs will not be guaranteed.
# e.g., when 1 epoch is 1000 steps => `num_epochs: 2` and `max_steps: 100` will train for 100 steps
max_steps:

# bool of whether to include tokens trainer per second in the training metrics. This iterates over the entire dataset once, so it takes some time.
include_tokens_per_second: # Optional[bool]

# whether to find batch size that fits in memory. Passed to underlying transformers Trainer
auto_find_batch_size: # Optional[bool]

eval_table_size: # Approximate number of predictions sent to wandb depending on batch size. Enabled above 0. Default is 0
eval_max_new_tokens: # Total number of tokens generated for predictions sent to wandb. Default is 128
do_causal_lm_eval: # Whether to run causal language model evaluation for metrics in `eval_causal_lm_metrics`.
eval_causal_lm_metrics: # HF evaluate metrics used during evaluation. Default is ["sacrebleu", "comet", "ter", "chrf", "perplexity"]

profiler_steps: # enable the pytorch profiler to capture the first N steps of training to the output_dir.
                # see https://pytorch.org/blog/understanding-gpu-memory-1/ for more information
                # snapshots can be visualized @ https://pytorch.org/memory_viz

loss_watchdog_threshold: # High loss value, indicating the learning has broken down (a good estimate is ~2 times the loss at the start of training)
loss_watchdog_patience: # Number of high-loss steps in a row before the trainer aborts (default: 3)

# Save model as safetensors (require safetensors package)
save_safetensors:

# Whether to mask out or include the human's prompt from the training labels
train_on_inputs: false
# Group similarly sized data to minimize padding.
# May be slower to start, as it must download and sort the entire dataset.
# Note that training loss may have an oscillating pattern with this enabled.
group_by_length: false

# Whether to use gradient checkpointing. Available options are: true, false, "offload", "offload_disk".
# https://huggingface.co/docs/transformers/v4.18.0/en/performance#gradient-checkpointing
gradient_checkpointing: false
# additional kwargs to pass to the trainer for gradient checkpointing
# gradient_checkpointing_kwargs:
#   use_reentrant: true

# Stop training after this many evaluation losses have increased in a row
# https://huggingface.co/transformers/v4.2.2/_modules/transformers/trainer_callback.html#EarlyStoppingCallback
early_stopping_patience: 3

# Specify a scheduler and kwargs to use with the optimizer
# Valid values are driven by the Transformers SchedulerType class, see:
# https://github.com/huggingface/transformers/blob/5f4ecf2d9f867a1255131d2461d75793c0cf1db2/src/transformers/trainer_utils.py#L420
# Valid values include
# - 'linear'
# - 'cosine' (default)
# - 'cosine_with_restarts'
# - 'polynomial'
# - 'constant'
# - 'constant_with_warmup'
# - 'inverse_sqrt'
# - 'reduce_lr_on_plateau'
# - 'cosine_with_min_lr'
# - 'warmup_stable_decay'

# Additional schedulers include:
# - 'one_cycle'
# - 'rex'
lr_scheduler:
lr_scheduler_kwargs:
cosine_min_lr_ratio: # decay lr to some percentage of the peak lr, e.g. cosine_min_lr_ratio=0.1 for 10% of peak lr
cosine_constant_lr_ratio: # freeze lr at some percentage of the step, e.g. cosine_constant_lr_ratio=0.8 means start cosine_min_lr at 80% of training step (https://arxiv.org/pdf/2308.04014.pdf)

# For one_cycle optim
lr_div_factor: # Learning rate div factor

# Specify optimizer
# Valid values are driven by the Transformers OptimizerNames class, see:
# https://github.com/huggingface/transformers/blob/cbf924b76c03828101a34069a96d209314114fd5/src/transformers/training_args.py#L144-L189
#
# Note that not all optimizers may be available in your environment, ex: 'adamw_anyprecision' is part of
# torchdistx, 'adamw_bnb_8bit' is part of bnb.optim.Adam8bit, etc. When in doubt, it is recommended to start with the optimizer used
# in the examples/ for your model and fine-tuning use case.
#
# Valid values for 'optimizer' include:
# - adamw_torch
# - adamw_torch_fused (default)
# - adamw_torch_xla
# - adamw_torch_npu_fused
# - adamw_apex_fused
# - adopt_adamw  (an EXPERIMENTAL optimizer, only for torch version >= 2.5.1)
# - adafactor
# - adamw_anyprecision
# - adamw_torch_4bit
# - ademamix
# - sgd
# - adagrad
# - adamw_bnb_8bit
# - adamw_8bit   # alias for adamw_bnb_8bit
# - ademamix_8bit
# - lion_8bit
# - lion_32bit
# - paged_adamw_32bit
# - paged_adamw_8bit
# - paged_ademamix_32bit
# - paged_ademamix_8bit
# - paged_lion_32bit
# - paged_lion_8bit
# - rmsprop
# - rmsprop_bnb
# - rmsprop_bnb_8bit
# - rmsprop_bnb_32bit
# - galore_adamw
# - galore_adamw_8bit
# - galore_adafactor
# - galore_adamw_layerwise
# - galore_adamw_8bit_layerwise
# - galore_adafactor_layerwise
# - lomo
# - adalomo
# - grokadamw
# - schedule_free_adamw
# - schedule_free_sgd
# - apollo_adamw
# - apollo_adamw_layerwise
#
# Additional custom optimizers include:
# - optimi_adamw
# - ao_adamw_8bit
# - ao_adamw_fp8
# - came_pytorch
optimizer:
# Dictionary of arguments to pass to the optimizer
optim_args:
# For Galore Optimizers the following optim_args are available
# rank:  # type: int
# update_proj_gap  # type: int
# scale  # type: float
# proj_type:  # type: str, default = std

# The target modules to optimize, i.e. the module names that you would like to train, right now this is used only for GaLore algorithm
optim_target_modules:
# - self_attn  # for llama
# - mlp

# Specify weight decay
weight_decay:
# adamw hyperparams
adam_beta1:
adam_beta2:
adam_beta3:  # only used for CAME Optimizer
adam_epsilon:
adam_epsilon2:  # only used for CAME Optimizer
# Gradient clipping max norm
max_grad_norm:

# Augmentation techniques
# NEFT https://arxiv.org/abs/2310.05914, set this to a number (paper default is 5) to add noise to embeddings
# currently only supported on Llama and Mistral
neftune_noise_alpha:

# Optional[bool]. Whether to bettertransformers
flash_optimum:

# Note: Only one of the following attention patches can be used at a time.
# For example, if you set `xformers_attention` to `true`, do not set `flash_attention` to `true`.

# Optional[bool]. Whether to use xformers attention patch https://github.com/facebookresearch/xformers:
xformers_attention:
# Optional[bool]. Whether to use flash attention patch https://github.com/Dao-AILab/flash-attention:
flash_attention:
flash_attn_cross_entropy:  # Optional[bool]. Whether to use flash-attention cross entropy implementation - advanced use only
flash_attn_rms_norm:  # Optional[bool]. Whether to use flash-attention rms norm implementation - advanced use only
flash_attn_fuse_qkv: # Optional[bool]. Whether to fuse QKV into a single operation
flash_attn_fuse_mlp: # Optional[bool]. Whether to fuse part of the MLP into a single operation
# Optional[bool]. Whether to use scaled-dot-product attention
# https://pytorch.org/docs/stable/generated/torch.nn.functional.scaled_dot_product_attention.html
sdp_attention:
# Optional[bool]. Shifted-sparse attention (only llama) - https://arxiv.org/pdf/2309.12307.pdf
s2_attention:

# Optional[bool]. Whether to use low_cpu_mem_usage
low_cpu_mem_usage:
# Optional[str]. Resume from a specific checkpoint dir
resume_from_checkpoint:
# Optional[bool]. If resume_from_checkpoint isn't set and you simply want it to start where it left off.
# Be careful with this being turned on between different models.
auto_resume_from_checkpoints: false

## Multimodal section
# int | tuple[int, int] | None . Size to resize images to, width x height.
# Will read from model/processor config if not set.
image_size:
# str. Algorithm to use for image resizing. "bilinear", "bicubic", "lanczos". Default is "bilinear".
image_resize_algorithm: 'bilinear'
## End of multimodal section

# Don't mess with this, it's here for accelerate and torchrun
local_rank:

# Add or change special tokens.
# If you add tokens here, you don't need to add them to the `tokens` list.
special_tokens:
  # bos_token: "<s>"
  # eos_token: "</s>"
  # unk_token: "<unk>"
  # pad_token: "[PAD]"

# Optional[list[str]]. Add extra tokens to the tokenizer.
tokens:
  # - "<|startoftext|>"
  # - "<|endoftext|>"

# Mapping token_id to new_token_string to override reserved added_tokens in the tokenizer.
# Only works for tokens that are not part of the base vocab (aka are added_tokens).
# Can be checked if they exist in tokenizer.json added_tokens.
added_tokens_overrides:  # Dict[int, str]
#  128041: "<|im_start|>"
#  128042: "<|im_end|>"

# FSDP
fsdp:
fsdp_config:

# Deepspeed config path. e.g., deepspeed_configs/zero3.json
deepspeed:

# Advanced DDP Arguments
ddp_timeout:
ddp_bucket_cap_mb:
ddp_broadcast_buffers:

# Sequence parallelism
# Set to a divisor of the number of GPUs available to split sequences into chunks of equal size.
# Use in long context training to prevent OOM when sequences cannot fit into a single GPU's VRAM.
# E.g., if 4 GPUs are available, set this value to 2 to split each sequence into two equal-sized
# subsequences, or set to 4 to split into four equal-sized subsequences.
# See https://docs.axolotl.ai/docs/sequence_parallelism.html for more details.
sequence_parallel_degree:
# Optional; strides across the key dimension. Larger values use more memory but should make training faster.
# Must evenly divide the number of KV heads in your model.
heads_k_stride: 1
# One of "varlen_llama3", "batch_ring", "batch_zigzag", "batch_stripe". Defaults to "varlen_llama3"
# in the sample packing case, and "batch_ring" in the non-sample packing case.
ring_attn_func:

# Path to torch distx for optim 'adamw_anyprecision'
torchdistx_path:

# Set to HF dataset for type: 'completion' for streaming instead of pre-tokenize
pretraining_dataset:

# Debug mode
debug:

# Seed
seed:

# Allow overwrite yml config using from cli
strict:
```
