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Showing posts with label troubleshooting. Show all posts
Showing posts with label troubleshooting. Show all posts
Sunday, June 14, 2026

Working with GPUs - Part7 - Unable to determine the device handle for GPU

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One of the more common GPU failures encountered in large-scale AI clusters is a situation where the Nvidia driver can no longer communicate ...
Sunday, April 12, 2026

Working with GPUs - Part5 - XID errors

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If you are running large-scale AI training or LLM inference, you already know that managing a GPU cluster is less about "if" thing...
Saturday, October 18, 2025

Working with GPUs - Part1 - Using nvidia-smi

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GPUs are the backbone of modern AI and HPC clusters, and understanding their basic health and configuration is the first step toward reliabl...
Saturday, August 16, 2025

Understanding NUMA: Its Impact on VM Performance in ESXi

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VMware ESXi hosts use Non-Uniform Memory Access (NUMA) architecture to optimize CPU and memory locality. Each NUMA node consists of a subset...
Thursday, June 27, 2024

vSphere with Tanzu using NSX-T - Part33 - Troubleshooting intermittent connection timeouts to apiserver and workloads

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In the realm of managing Tanzu Kubernetes clusters (TKCs), we have encountered several challenges that hindered the smooth functioning of ou...
Sunday, June 23, 2024

vSphere with Tanzu using NSX-T - Part31 - Troubleshooting inaccessible TKC with expired control plane certs

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In the course of managing multiple Tanzu Kubernetes Clusters (TKC), I encountered an unexpected issue: the control plane certificates had ex...
Saturday, May 25, 2024

vSphere with Tanzu using NSX-T - Part30 - Troubleshooting inaccessible TKC with server pool members missing in the LB VS

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Encountering issues with connectivity to your TKC apiserver/ control plane can be frustrating. One common problem we've seen is the kube...