AWS Ray Train DLC (train-ml-cuda-v1.1) enables EFA-backed multi-node PyTorch on EKS
AWS provides a Ray Train Deep Learning Container (public.ecr.aws/deep-learning-containers/ray:train-ml-cuda-v1.1) that bundles CUDA, NCCL, EFA userspace libraries and Ray, allowing multi-node PyTorch training on EKS without building custom images. A provided sample shows fine-tuning Qwen2.5-1.5B with PyTorch FSDP across eight NVIDIA L4 GPUs on two g6.12xlarge instances using KubeRay and EFA.