Steve Scargall

Building NDCTL Utilities from Source: A Comprehensive Guide

Building NDCTL with Meson on Ubuntu 24.04 The NDCTL package includes the cxl, daxctl, and ndctl utilities.

Understanding STREAM: Benchmarking Memory Bandwidth for DRAM and CXL

In today’s Artificial Intelligence (AI), Machine Learning (ML), and high-performance computing (HPC) landscape, memory bandwidth is a critical factor in determining overall system performance.

A Step-by-Step Guide on Using Cloud Images with QEMU 9 on Ubuntu 24.04

Introduction Cloud images are pre-configured, optimized templates of operating systems designed specifically for cloud and virtualized environments.

Understanding Memory Usage with `smem`

Memory management is crucial for Linux administrators and developers, especially when optimizing performance for resource-intensive applications.

A Practical Guide to Identify Compute Express Link (CXL) Devices in Your Server

In this article, we will provide four methods for identifying CXL devices in your server and how to determine which CPU socket and NUMA node each CXL device is connected.

How To Map a CXL Endpoint to a CPU Socket in Linux

When working with CXL Type 3 Memory Expander endpoints, it’s nice to know which CPU Socket owns the root complex for the endpoint.

Using Linux Kernel Memory Tiering

In this post, I’ll discuss what memory tiering is, why we need it, and how to use the memory tiering feature available in the mainline v5.

How To map VMWare vSphere/ESXi PMem devices from the Host to Guest VM

In this post, we’ll use VMWare ESXi 7.0u3 to create a Guest VM running Ubuntu 21.

How To Emulate CXL Devices using KVM and QEMU

What is CXL? Compute Express Link (CXL) is an open standard for high-speed central processing unit-to-device and CPU-to-memory connections, designed for high-performance data center computers.

How To Build a custom Linux Kernel to test Data Access Monitor (DAMON)

DAMON is a data access monitoring framework subsystem for the Linux kernel.

Resolving commands 'Killed' on GCP f1-micro Compute Engine instances

When I want to perform a quick task, I generally spin up a Google GCP Compute Engine instance as they’re cheap.

How To Enable Debug Logging in ipmctl

The ipmctl utility is used for configuring and managing Intel Optane Persistent Memory modules (DCPMM/PMem).

How To Monitor Persistent Memory Performance on Linux using PCM, Prometheus, and Grafana

In a previous article, I showed How To Install Prometheus and Grafana on Fedora Server .

Using ltrace to see what ipmctl and ndctl are doing

How to , Linux , Performance , Troubleshooting

Occasionally, it is necessary to debug commands that are slow. Or you may simply be interested in learning how the tools work.

How to Boot Linux from Intel® Optane™ Persistent Memory

How to , Linux

Introduction In this article, I will demonstrate how to configure a system with Intel Optane Persistent Memory (PMem) and use part of the PMem as a boot device.

How to Boot Linux from Intel® Optane™ Persistent Memory

How to , Linux

Introduction In this article, I will demonstrate how to configure a system with Intel Optane Persistent Memory (PMem) and use part of the PMem as a boot device.