set -x

MODEL_ID=${MODEL_ID:-Qwen/Qwen2.5-0.5B-Instruct}
MODEL_PATH=${MODEL_PATH:-${HOME}/models/${MODEL_ID}}
huggingface-cli download "${MODEL_ID}" --local-dir "${MODEL_PATH}"

USE_DIST_CKPT=${USE_DIST_CKPT:-False}
DIST_CKPT_PATH=${DIST_CKPT_PATH:-${HOME}/dist_ckpt/qwen2_5_05b_grpo_mindspeed}
if [ "$USE_DIST_CKPT" = "True" ]; then
    if [ "$USE_DUMMY_MODEL" = "True" ]; then
        DIST_CKPT_PATH=${HOME}/dist_ckpt_dummy/${MODEL_ID}
    fi
    python scripts/converter_hf_to_mcore.py \
        --hf_model_path "${MODEL_PATH}" \
        --output_path "${DIST_CKPT_PATH}"
fi


python3 -m verl.trainer.main_ppo --config-path=config \
    --config-name='ppo_megatron_trainer.yaml' \
    algorithm.adv_estimator=grpo \
    data.train_files=$HOME/data/gsm8k/train.parquet \
    data.val_files=$HOME/data/gsm8k/test.parquet \
    data.train_batch_size=128 \
    data.max_prompt_length=512 \
    data.max_response_length=128 \
    data.filter_overlong_prompts=True \
    data.truncation='error' \
    actor_rollout_ref.model.path=${MODEL_ID} \
    actor_rollout_ref.actor.optim.lr=5e-7 \
    actor_rollout_ref.actor.ppo_mini_batch_size=64 \
    actor_rollout_ref.actor.ppo_micro_batch_size_per_gpu=20 \
    actor_rollout_ref.actor.strategy=megatron \
    actor_rollout_ref.actor.megatron.pipeline_model_parallel_size=2 \
    actor_rollout_ref.actor.megatron.tensor_model_parallel_size=2 \
    actor_rollout_ref.actor.megatron.expert_model_parallel_size=1 \
    actor_rollout_ref.actor.megatron.use_dist_checkpointing=True \
    actor_rollout_ref.actor.megatron.dist_checkpointing_path=${DIST_CKPT_PATH} \
    actor_rollout_ref.actor.use_kl_loss=True \
    actor_rollout_ref.actor.kl_loss_coef=0.001 \
    actor_rollout_ref.actor.kl_loss_type=low_var_kl \
    actor_rollout_ref.rollout.log_prob_micro_batch_size_per_gpu=40 \
    actor_rollout_ref.rollout.enable_chunked_prefill=False \
    actor_rollout_ref.rollout.tensor_model_parallel_size=2 \
    actor_rollout_ref.rollout.name=vllm \
    actor_rollout_ref.rollout.gpu_memory_utilization=0.6 \
    actor_rollout_ref.rollout.n=5 \
    actor_rollout_ref.ref.log_prob_micro_batch_size_per_gpu=40 \
    actor_rollout_ref.ref.strategy=megatron \
    actor_rollout_ref.ref.megatron.pipeline_model_parallel_size=2 \
    actor_rollout_ref.ref.megatron.tensor_model_parallel_size=2 \
    actor_rollout_ref.ref.megatron.expert_model_parallel_size=1 \
    actor_rollout_ref.ref.megatron.use_dist_checkpointing=True \
    actor_rollout_ref.ref.megatron.dist_checkpointing_path=${DIST_CKPT_PATH} \
    algorithm.kl_ctrl.kl_coef=0.001 \
    trainer.critic_warmup=0 \
    trainer.logger=console \
    trainer.project_name='verl_grpo_example_gsm8k' \
    trainer.experiment_name='qwen2_7b_function_rm' \
    trainer.n_gpus_per_node=8 \
    trainer.nnodes=1 \
    trainer.save_freq=-1 \
    trainer.test_freq=5 \
    trainer.total_epochs=1 \
    trainer.total_training_steps=2 \
    trainer.device=npu \
    +actor_rollout_ref.actor.megatron.override_transformer_config.use_flash_attn=True $@
