Whether it’s force of habit, or from actual need, users of HPC environments crave interactivity. Because the impact of unmanaged interactive sessions can be significant, there exists the potential for concern. Is it possible to meet users’ need for interactivity while managing the potential for impact? In this first part of a two-part series on managing interactive impact, attention focuses on the introduction of login nodes to a cluster managed by Bright Cluster Manager. The second part in this series will focus on use of workload managers as a complementary means for managing the interactive impact on the compute nodes of a cluster.
Bright Cluster Manager does not include the VNC Server package by default but you can easily add it. This article shows how to do it in a few quick and easy steps.
The Bright Cluster Manager installer allows you to customize the disk partition layout on the head node as well as the compute nodes. While the layout of compute nodes can be changed after installation, the head node partitioning layout cannot. So it's important to think about how you want to partition the disks on the head node before installation. The Bright installer provides a built-in editor you can use to customize the disk layout. But you can also do this outside of the Bright installer. This article describes how to edit the master disk layout outside of the Bright installer.
This article describes how to NFS export a directory from the head node and mount it on a set of nodes using the Bright Cluster Manager CMSH. It only takes 8 easy steps to complete and verify this task.
We'll use /tmp as an example. Here's what we need to do:
1. NFS export /scratch on the head node
2. Mount master:/tmp on the nodes as /mnt/tmp
Let's get started.