CADESUser DocumentationGlossary

Glossary

The definitions below are related to this document and are provided for quick reference. A more complete list of definitions can be found in the official OpenStack documentation.

Bash

A UNIX shell used for entering command-line executions. Included with most Linux distributions and macOS. Includes SSH capability.

Horizon

A web GUI front end for OpenStack that is accessed via https://cloud.cades.ornl.gov.

Hypervisor

Also known as a virtual machine monitor, a hypervisor is software/hardware that creates, runs, and manages virtual machines.

Instance

A virtual machine set up through OpenStack. See "Virtual Machine".

OpenStack

A cloud operating system that controls large pools of compute, storage, and networking resources throughout a data center.

Project

The base unit of "ownership" in OpenStack. All resources in OpenStack should be owned by a specific project. In OpenStack Identity, a project must be owned by a specific domain.

Tenant

A legacy OpenStack term for "Project" that is still used in the Horizon web GUI.

Virtual Machine

An operating system instance that runs on top of a hypervisor. Multiple virtual machines (VMs) can run at the same time on the same physical host.

Acronyms

CADES

Compute and Data Environment for Science

CLI

Command-Line Interface

DTN

Delay-Tolerant Network

GPU

Graphics Processing Unit

GUI

Graphical User Interface

LDAP

Limited Lightweight Directory Access Protocol

MPI

Message Passing Interface

NFS

Network File System

PBS

Portable Batch System

S3

Simple Storage Service

SFTP

Secure/SSH File Transfer Protocol

SHPC

Scalable High-Performance Computing/Cluster

SSH

Secure Shell

UCAMS

Universal Computer Access Management

VM

Virtual Machine

XCAMS

External Computer Access Management

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