NUMA

Simulating NUMA Nodes for Nested ESXi Virtual Appliances

To troubleshoot a particular NUMA client behavior in a heterogenous multi-cloud environment, I needed to set up an ESXi7.0 environment. Currently,...
frankdenneman
2 min read

vSphere 8 CPU Topology for Large Memory Footprint VMs Exceeding NUMA Boundaries

By default, vSphere manages the vCPU configuration and vNUMA topology automatically. vSphere attempts to keep the VM within a NUMA node...
frankdenneman
3 min read

vSphere 8 CPU Topology Device Assignment

There seems to be some misunderstanding about the new vSphere 8 CPU Topology Device Assignment feature, and I hope this article...
frankdenneman
3 min read

Sub-NUMA Clustering

I’m noticing a trend that more ESXi hosts have Sub-NUMA Clustering enabled. Typically this setting is used in the High-Performance Computing...
frankdenneman
10 min read

Unexplored Territory Podcast Episode 19 – Discussing NUMA and Cores per Sockets with the main CPU engineer of vSphere

Richard Lu joined us to talk basics of NUMA, Cores per Socket, why modern windows and mac systems have a default...
frankdenneman
25 sec read

Solving vNUMA Topology Mismatch When Migrating between Dual Socket Servers and Quad Socket Servers

I recently received a few questions from customers migrating between clusters with different CPU socket footprints. The challenge is not necessarily...
frankdenneman
3 min read

vSphere 7 Cores per Socket and Virtual NUMA

Regularly I meet with customers to discuss NUMA technology, and one of the topics that are always on the list is...
frankdenneman
4 min read

VM Service – Help Developers by Aligning Their Kubernetes Nodes to the Physical Infrastructure

The vSphere 7.0 U2a update released on April 27th introduces the new VM service and VM operator. Hidden away in what...
frankdenneman
4 min read

Machine Learning Workload and GPGPU NUMA Node Locality

In the previous article “PCIe Device NUMA Node Locality” I covered the physical connection between the processor and the PCIe device...
frankdenneman
10 min read

PCIe Device NUMA Node Locality

During this Christmas break, I wanted to learn PowerCLI properly. As I’m researching the use-cases of new hardware types and workloads...
frankdenneman
6 min read