7B_qat_full.yaml

# Config for multi-device QAT finetuning in qat_distributed.py
# using a Llama2 7B model
#
# This config assumes that you've run the following command before launching
# this run:
#   tune download meta-llama/Llama-2-7b-hf --output-dir /tmp/Llama-2-7b-hf --hf-token <HF_TOKEN>
#
# To launch on 4 devices, run the following command from root:
#   tune run --nnodes 1 --nproc_per_node 4 qat_distributed --config llama2/7B_qat_full
#
# You can add specific overrides through the command line. For example
# to override the checkpointer directory while launching training
# you can run:
#   tune run --nnodes 1 --nproc_per_node 4 qat_distributed --config llama2/7B_qat_full checkpointer.checkpoint_dir=<YOUR_CHECKPOINT_DIR>


# Tokenizer
tokenizer:
  _component_: torchtune.models.llama2.llama2_tokenizer
  path: /tmp/Llama-2-7b-hf/tokenizer.model
  max_seq_len: null

# Dataset
dataset:
  packed: False # Set to true for great speed ups
  _component_: torchtune.datasets.alpaca_dataset
seed: null
shuffle: True

# Model Arguments
model:
  _component_: torchtune.models.llama2.llama2_7b

checkpointer:
  _component_: torchtune.training.FullModelHFCheckpointer
  checkpoint_dir: /tmp/Llama-2-7b-hf
  checkpoint_files: [
    pytorch_model-00001-of-00002.bin,
    pytorch_model-00002-of-00002.bin
  ]
  recipe_checkpoint: null
  output_dir: /tmp/Llama-2-7b-hf
  model_type: LLAMA2
resume_from_checkpoint: False

# Fine-tuning arguments
batch_size: 2
epochs: 3
optimizer:
  _component_: torch.optim.AdamW
  fused: True
  lr: 2e-5
loss:
  _component_: torchtune.modules.loss.CEWithChunkedOutputLoss
max_steps_per_epoch: null
gradient_accumulation_steps: 1
compile: False

# QAT arguments
quantizer:
  _component_: torchtune.training.quantization.Int8DynActInt4WeightQATQuantizer
  groupsize: 256

# Training env
device: cuda

# Memory management
enable_activation_checkpointing: True
memory_efficient_fsdp_wrap: False

# Reduced precision
dtype: bf16

# Logging
metric_logger:
  _component_: torchtune.training.metric_logging.DiskLogger
  log_dir: ${output_dir}
output_dir: /tmp/alpaca-llama2-finetune
log_every_n_steps: 1
log_peak_memory_stats: True