Train CodeFu-7B with veRL and Ray on Amazon SageMaker Training jobs

The rapid advancement of artificial intelligence (AI) has created unprecedented demand for specialized models capable of complex reasoning tasks, particularly in competitive programming where models must generate functional code through algorithmic reasoning rather than pattern memorization. Reinforcement learning (RL) enables models to learn through trial and error by receiving rewards based on actual code execution, making it particularly well-suited for developing genuine problem-solving capabilities in algorithmic domains.

However, implementing distributed RL training for code generation presents significant infrastructure challenges such as orchestrating multiple heterogeneous components, coordinating parallel code compilation across nodes, and maintaining fault tolerance for long-running processes. Ray is one of the frameworks for distributed workloads that address these challenges, due to its unified system that handles the entire AI pipeline, GPU-first architecture, and seamless integration with tools like Hugging Face Transformers and PyTorch.

Workloads can be run with Ray framework on SageMaker training jobs by using the Ray ...