openrlhf-training

Optimize RLHF training for large language models across distributed GPU clusters.

Updated Feb 15, 2026
One-click install
npx skills add https://github.com/ricable/mcai --skill openrlhf-training-ricable
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: openrlhf-training
Source: https://github.com/ricable/mcai/tree/main/.agents/skills/openrlhf-training
Command: npx skills add https://github.com/ricable/mcai --skill openrlhf-training-ricable

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

OpenRLHF-training removes the complexity of running large-scale RLHF workflows by coordinating distributed GPUs, inference engines, and checkpointing for aligned model training.

Core Features & Use Cases

  • PPO, GRPO, RLOO, REINFORCE++, and DPO training for 7B to 70B+ models.
  • Ray-based multi-node orchestration with vLLM acceleration and ZeRO-3 memory sharding.
  • Hybrid Engine resource sharing, custom reward functions, and agent-style multi-step RLHF for code, math, and conversation tasks.

Quick Start

Use the openrlhf-training skill to launch an RLHF job for your chosen model, reward setup, and Ray cluster configuration.

Frequently Asked Questions about openrlhf-training

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I scale distributed RLHF training across multiple GPUs?

Distributed RLHF training scales across multi-node GPU clusters using Ray orchestration, ZeRO-3 memory sharding, and vLLM acceleration to coordinate large models efficiently. This reduces GPU waste while handling 7B to 70B+ parameter workloads.

Can I run PPO and DPO training for 70B models using vLLM?

Yes, PPO, DPO, GRPO, RLOO, and REINFORCE++ training workflows support 7B to 70B+ models. They leverage vLLM acceleration for fast rollout generation and ZeRO-3 sharding to fit large models within distributed GPU memory constraints.

What is the best way to orchestrate multi-node RLHF workflows with Ray?

Ray-based multi-node orchestration manages distributed GPU clusters for RLHF by scheduling colocated models and handling checkpoint recovery automatically. This simplifies complex alignment training workflows across multiple machines.

Does OpenRLHF support custom reward functions and agent-style RLHF?

Yes, the framework supports custom reward functions and agent-style multi-step RLHF workflows. This enables specialized training for code, math, and conversation tasks using hybrid engine resource sharing.

How does checkpoint recovery work for distributed alignment training?

Checkpoint recovery automatically saves and restores training states during distributed RLHF workflows to prevent progress loss. This ensures fault tolerance when running large-scale PPO or DPO jobs across multi-node GPU clusters.