Himeno

Introduction

I have changed the hostfile that determines the order of OpenMPI execution nodes and re-measured OpenMPI performance on the Himeno benchmark as this article I posted it. After posting, I thought about it again and decided to use objective figures instead of my own judgments based on CPU and clock performance.

So this time, I decided to measure the performance of each individual workstation (node), and then decide the order of hostfile according to the results, and measure them again.

Introduction

A month ago in this post, I measured the performance of OpenMPI with the HIMENO benchmark. My friend who saw that post pointed out some improvements regarding the order of the hostfile. In this post, I summarized the results of the performance measurement again after modifying the hostfile.

Motivation

As I stated in this post yesterday, I was able to run a program using OpenMPI on a Docker container running on multiple nodes. I wanted to find out how much performance I could improve by using OpenMPI, so I decided to benchmark it. Actually, I had some difficulties this time as well, and I would be happy if that part is helpful for others.