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Aug 12, 2024 · Cloud Native

Setting /dev/shm Size for Kubernetes Pods: A Production Troubleshooting Guide

During a production deployment of large language model training on Kubernetes, a pod failed due to insufficient /dev/shm shared memory; the article details the root cause, explores missing pod spec parameters, and presents a complete solution using an emptyDir volume with medium: Memory and sizeLimit to configure shared memory.