The GPU runners used runtime_class_name=nvidia for CUDA access but
didn't request nvidia.com/gpu as a K8s resource, allowing multiple
training pods to share a GPU without K8s awareness. Add pod_spec
patches to request GPU resources properly so K8s enforces mutual
exclusion between GitLab CI and Argo training jobs.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Pool ci-training-h100x2 (H100-2-80G, 160GB VRAM total).
MultiGpuConfig::detect() in ml crate auto-enables data parallelism.
Tags: kapsule,h100x2. Autoscale 0→1.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>