#!/usr/bin/env bash
set -xeuo pipefail

project_name='DAPO'
exp_name='dapo_qwen2-7B-math_28k_fsdp2_fully-async_32-32'

# Ray
# RAY_ADDRESS=${RAY_ADDRESS:-"http://localhost:8265"}
# WORKING_DIR=${WORKING_DIR:-"${PWD}"}
# RUNTIME_ENV=${RUNTIME_ENV:-"${WORKING_DIR}/verl/trainer/runtime_env.yaml"}
# Paths
RAY_DATA_HOME=${RAY_DATA_HOME:-"${HOME}/verl"}
# very important! please modify the max_position_embeddings in config.json to 32768 after downloading from huggingface
MODEL_PATH=${MODEL_PATH:-"${RAY_DATA_HOME}/models/Qwen2.5-Math-7B"}
CKPTS_DIR=${CKPTS_DIR:-"${RAY_DATA_HOME}/ckpts/${project_name}/${exp_name}"}
TRAIN_FILE=${TRAIN_FILE:-"${RAY_DATA_HOME}/data/dapo-math-17k.parquet"}
TEST_FILE=${TEST_FILE:-"${RAY_DATA_HOME}/data/aime-2024.parquet"}

rollout_mode="async"
rollout_name="vllm" # sglang or vllm
if [ "$rollout_mode" = "async" ]; then
    export VLLM_USE_V1=1
    return_raw_chat="True"
fi

# Algorithm parameters
adv_estimator=grpo

use_kl_in_reward=False
kl_coef=0.0
use_kl_loss=False
kl_loss_coef=0.0

clip_ratio_low=0.2
clip_ratio_high=0.28

# Response length parameters
max_prompt_length=$((1024 * 2))
max_response_length=$((1024 * 28))
enable_overlong_buffer=True
overlong_buffer_len=$((1024 * 4))
overlong_penalty_factor=1.0

# Training parameters
loss_agg_mode="token-mean"

# Algorithm
temperature=1.0
top_p=1.0
top_k=-1 # 0 for HF rollout, -1 for vLLM rollout
val_top_p=0.7

# Performance Related Parameter
use_dynamic_bsz=True
actor_ppo_max_token_len=$(((max_prompt_length + max_response_length) * 2))
infer_ppo_max_token_len=$(((max_prompt_length + max_response_length) * 3))
ref_offload=True
actor_offload=False
gen_tp=4
sp_size=4
fsdp_size=8

# Fully async specific parameters
NNODES_ROLLOUT=${NNODES_ROLLOUT:-4}
NNODES_TRAIN=${NNODES_TRAIN:-4}
NGPUS_PER_NODE=${NGPUS_PER_NODE:-8}

train_prompt_bsz=0
gen_prompt_bsz=1
n_resp_per_prompt=16
train_prompt_mini_bsz=32
total_rollout_steps=$(((512*400)))
test_freq=20
staleness_threshold=0.1
trigger_parameter_sync_step=4
require_batches=4
partial_rollout=True

python -m recipe.fully_async_policy.fully_async_main \
    data.train_files="${TRAIN_FILE}" \
    data.val_files="${TEST_FILE}" \
    data.prompt_key=prompt \
    data.truncation='left' \
    data.max_prompt_length=${max_prompt_length} \
    data.max_response_length=${max_response_length} \
    data.train_batch_size=${train_prompt_bsz} \
    data.gen_batch_size=${gen_prompt_bsz} \
    data.return_raw_chat=${return_raw_chat} \
    actor_rollout_ref.rollout.n=${n_resp_per_prompt} \
    algorithm.adv_estimator=${adv_estimator} \
    algorithm.use_kl_in_reward=${use_kl_in_reward} \
    algorithm.kl_ctrl.kl_coef=${kl_coef} \
    actor_rollout_ref.actor.strategy=fsdp2 \
    critic.strategy=fsdp2 \
    actor_rollout_ref.actor.use_kl_loss=${use_kl_loss} \
    actor_rollout_ref.actor.kl_loss_coef=${kl_loss_coef} \
    actor_rollout_ref.actor.clip_ratio_low=${clip_ratio_low} \
    actor_rollout_ref.actor.clip_ratio_high=${clip_ratio_high} \
    actor_rollout_ref.actor.clip_ratio_c=10.0 \
    actor_rollout_ref.model.use_remove_padding=True \
    actor_rollout_ref.hybrid_engine=False \
    +actor_rollout_ref.model.override_config.max_position_embeddings=32768 \
    actor_rollout_ref.actor.use_dynamic_bsz=${use_dynamic_bsz} \
    actor_rollout_ref.ref.log_prob_use_dynamic_bsz=${use_dynamic_bsz} \
    actor_rollout_ref.rollout.log_prob_use_dynamic_bsz=${use_dynamic_bsz} \
    actor_rollout_ref.actor.ppo_max_token_len_per_gpu=${actor_ppo_max_token_len} \
    actor_rollout_ref.ref.log_prob_max_token_len_per_gpu=${infer_ppo_max_token_len} \
    actor_rollout_ref.rollout.log_prob_max_token_len_per_gpu=${infer_ppo_max_token_len} \
    actor_rollout_ref.model.path="${MODEL_PATH}" \
    actor_rollout_ref.actor.optim.lr=1e-6 \
    actor_rollout_ref.actor.optim.lr_warmup_steps=10 \
    actor_rollout_ref.actor.optim.weight_decay=0.1 \
    actor_rollout_ref.actor.ppo_mini_batch_size=${train_prompt_mini_bsz} \
    actor_rollout_ref.actor.fsdp_config.param_offload=${actor_offload} \
    actor_rollout_ref.actor.fsdp_config.optimizer_offload=${actor_offload} \
    actor_rollout_ref.actor.entropy_coeff=0 \
    actor_rollout_ref.actor.grad_clip=1.0 \
    actor_rollout_ref.actor.loss_agg_mode=${loss_agg_mode} \
    actor_rollout_ref.actor.ulysses_sequence_parallel_size=${sp_size} \
    actor_rollout_ref.rollout.gpu_memory_utilization=0.80 \
    actor_rollout_ref.rollout.tensor_model_parallel_size=${gen_tp} \
    actor_rollout_ref.rollout.enable_chunked_prefill=True \
    actor_rollout_ref.rollout.max_num_batched_tokens=$((max_prompt_length + max_response_length)) \
    actor_rollout_ref.rollout.temperature=${temperature} \
    actor_rollout_ref.rollout.top_p=${top_p} \
    actor_rollout_ref.rollout.top_k=${top_k} \
    actor_rollout_ref.rollout.val_kwargs.temperature=${temperature} \
    actor_rollout_ref.rollout.val_kwargs.top_p=${val_top_p} \
    actor_rollout_ref.rollout.val_kwargs.top_k=${top_k} \
    actor_rollout_ref.rollout.val_kwargs.do_sample=True \
    actor_rollout_ref.rollout.val_kwargs.n=1 \
    actor_rollout_ref.ref.fsdp_config.param_offload=${ref_offload} \
    actor_rollout_ref.ref.ulysses_sequence_parallel_size=${sp_size} \
    actor_rollout_ref.actor.fsdp_config.fsdp_size=${fsdp_size} \
    actor_rollout_ref.rollout.name=${rollout_name} \
    actor_rollout_ref.rollout.mode=${rollout_mode} \
    actor_rollout_ref.rollout.calculate_log_probs=True \
    reward_model.reward_manager=dapo \
    +reward_model.reward_kwargs.overlong_buffer_cfg.enable=${enable_overlong_buffer} \
    +reward_model.reward_kwargs.overlong_buffer_cfg.len=${overlong_buffer_len} \
    +reward_model.reward_kwargs.overlong_buffer_cfg.penalty_factor=${overlong_penalty_factor} \
    +reward_model.reward_kwargs.overlong_buffer_cfg.log=False \
    +reward_model.reward_kwargs.max_resp_len=${max_response_length} \
    trainer.logger=['console','tensorboard'] \
    trainer.project_name="${project_name}" \
    trainer.experiment_name="${exp_name}" \
    trainer.val_before_train=True \
    trainer.save_freq=-1 \
    trainer.default_local_dir="${CKPTS_DIR}" \
    trainer.resume_mode=auto \
    trainer.nnodes="${NNODES_TRAIN}" \
    trainer.n_gpus_per_node="${NGPUS_PER_NODE}" \
    rollout.nnodes="${NNODES_ROLLOUT}" \
    rollout.n_gpus_per_node="${NGPUS_PER_NODE}" \
    rollout.total_rollout_steps="${total_rollout_steps}" \
    rollout.total_epochs=10 \
    rollout.test_freq="${test_freq}" \
    async_training.staleness_threshold="${staleness_threshold}" \
    async_training.trigger_parameter_sync_step="${trigger_parameter_sync_step}" \
    async_training.require_batches="${require_batches}" \
    async_training.partial_rollout="${partial_rollout}" \
    async_training.use_rollout_log_probs=True
