7B_qlora_single_device.yaml

# Config for single device QLoRA with lora_finetune_single_device.py
# using a Llama2 7B model
#
# This config assumes that you've run the following command before launching
# this run:
#   tune download --repo-id meta-llama/Llama-2-7b \
#   --hf-token <HF_TOKEN> \
#   --output-dir /tmp/llama2
#
# To launch on a single device, run the following command from root:
#   tune run lora_finetune_single_device \
#   --config llama2\7B_qlora_single_device \
#
# You can add specific overrides through the command line. For example
# to override the checkpointer directory while launching training
# you can run:
#   tune --nnodes 1 --nproc_per_node 1 lora_finetune_single_device \
#   --config 7B_qlora_single_device \
#   checkpointer.checkpoint_dir=<YOUR_CHECKPOINT_DIR>
#
# This config works only for training on single device.

# Model Arguments
model:
  _component_: torchtune.models.llama2.qlora_llama2_7b
  lora_attn_modules: ['q_proj', 'v_proj', 'k_proj', 'output_proj']
  apply_lora_to_mlp: True
  apply_lora_to_output: False
  lora_rank: 8
  lora_alpha: 16
  quantize_base: True

checkpointer:
  _component_: torchtune.utils.FullModelMetaCheckpointer
  checkpoint_dir: /tmp/llama2
  checkpoint_files: [consolidated.00.pth]
  adapter_checkpoint: null
  recipe_checkpoint: null
  output_dir: /tmp/llama2/
  model_type: LLAMA2
resume_from_checkpoint: False

# Tokenizer
tokenizer:
  _component_: torchtune.models.llama2.llama2_tokenizer
  path: /tmp/llama2/tokenizer.model

# Dataset and Sampler
dataset:
  _component_: torchtune.datasets.alpaca_cleaned_dataset
  train_on_input: True
seed: null
shuffle: True
batch_size: 2

# Optimizer and Scheduler
optimizer:
  _component_: torch.optim.AdamW
  weight_decay: 0.01
  lr: 3e-4
lr_scheduler:
  _component_: torchtune.modules.get_cosine_schedule_with_warmup
  num_warmup_steps: 100

loss:
  _component_: torch.nn.CrossEntropyLoss

# Training
epochs: 1
max_steps_per_epoch: null
gradient_accumulation_steps: 1

# Logging
output_dir: /tmp/qlora_finetune_output/
metric_logger:
  _component_: torchtune.utils.metric_logging.DiskLogger
  log_dir: ${output_dir}
log_every_n_steps: 1

# Environment
device: cuda
dtype: bf16
enable_activation_checkpointing: True