# Config for single device LoRA finetuning in lora_finetune_single_device.py
# using a Qwen2.5 7B model
#
# This config assumes that you've run the following command before launching
# this run:
#   tune download Qwen/Qwen2.5-7B-Instruct --output-dir /tmp/Qwen2.5-7B-Instruct
#
# To launch on a single device, run the following command from root:
#   tune run lora_finetune_single_device --config qwen2_5/7B_lora_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 run lora_finetune_single_device --config qwen2_5/7B_lora_single_device checkpointer.checkpoint_dir=<YOUR_CHECKPOINT_DIR>
#
# This config works only for training on single device.

output_dir: /home/mira/models/qwen2_5_7B_tune/lora_single_device # /tmp may be deleted by your system. Change it to your preference.

# Model Arguments
model:
  _component_: torchtune.models.qwen2_5.lora_qwen2_5_7b_base
  lora_attn_modules: ["q_proj", "k_proj", "v_proj", "output_proj"]
  apply_lora_to_mlp: True
  apply_lora_to_output: True
  lora_rank: 32 # higher increases accuracy and memory
  lora_alpha: 64 # usually alpha=2*rank
  lora_dropout: 0.05
  quantize_base: True

tokenizer:
  _component_: torchtune.models.qwen2_5.qwen2_5_tokenizer
  path: /home/mira/models/Qwen2.5-7B-Base/vocab.json
  merges_file: /home/mira/models/Qwen2.5-7B-Base/merges.txt
  max_seq_len: 16384

checkpointer:
  _component_: torchtune.training.FullModelHFCheckpointer
  checkpoint_dir: /home/mira/models/Qwen2.5-7B-Base
  checkpoint_files:
    [
      model-00001-of-00004.safetensors,
      model-00002-of-00004.safetensors,
      model-00003-of-00004.safetensors,
      model-00004-of-00004.safetensors,
    ]
  recipe_checkpoint: null
  output_dir: ${output_dir}
  model_type: QWEN2
save_every_n_steps: 100
resume_from_checkpoint: False

# Dataset and Sampler
dataset:
  _component_: torchtune.datasets.alpaca_cleaned_dataset
  packed: True # True increases speed
seed: 42
shuffle: False
batch_size: 1

# Optimizer and Scheduler
optimizer:
  _component_: torch.optim.AdamW
  fused: True
  weight_decay: 0.01
  lr: 1e-4
lr_scheduler:
  _component_: torchtune.training.lr_schedulers.get_cosine_schedule_with_warmup
  num_warmup_steps: 100

loss:
  _component_: torchtune.modules.loss.CEWithChunkedOutputLoss

# Training
epochs: 1
max_steps_per_epoch: null
gradient_accumulation_steps: 32 # Use to increase effective batch size
clip_grad_norm: null
compile: True # torch.compile the model + loss, True increases speed + decreases memory

# Logging
metric_logger:
  _component_: torchtune.training.metric_logging.DiskLogger
  log_dir: ${output_dir}/logs
log_every_n_steps: 5
log_peak_memory_stats: True

# Environment
device: cuda
dtype: fp16

# Activations Offloading
enable_activation_checkpointing: True # True reduces memory
enable_activation_offloading: True # True reduces memory

# Show case the usage of pytorch profiler
# Set enabled to False as it's only needed for debugging training
profiler:
  _component_: torchtune.training.setup_torch_profiler
  enabled: False

  #Output directory of trace artifacts
  output_dir: ${output_dir}/profiling_outputs

  #`torch.profiler.ProfilerActivity` types to trace
  cpu: True
  cuda: True

  #trace options passed to `torch.profiler.profile`
  profile_memory: False
  with_stack: False
  record_shapes: True
  with_flops: False

  # `torch.profiler.schedule` options:
  # wait_steps -> wait, warmup_steps -> warmup, active_steps -> active, num_cycles -> repeat
  wait_steps: 5
  warmup_steps: 5
  active_steps: 2
  num_cycles: 1