spin_trainer.yaml

# the sppo config will override default ppo_trainer.yaml

hydra:
  searchpath:
    - file://verl/trainer/config

defaults:
  - ppo_trainer
  - _self_

actor_rollout_ref:
  actor:
    dpo_beta: 0.1
    optim:
      lr_warmup_steps: 15
  rollout:
    name: sglang
    tensor_model_parallel_size: 2
    gpu_memory_utilization: 0.5
    val_kwargs:
      n: 2  # 2 will trigger validation, 1 will bypass

algorithm:
  adv_estimator: null

trainer:
  log_val_generations: 0
  ref_update_freq: 1