Search Documentation

Glenn, Oakley

SSHing directly to a compute node at OSC - even if that node has been assigned to you in a current batch job - and starting VNC is an "unsafe" thing to do. When your batch job ends (and the node is assigned to other users), stray processes will be left behind and negatively impact other users. However, it is possible to use VNC on compute nodes safely.

This knowledge base is a collection of important, useful information about OSC systems that does not fit into a guide or tutorial, and is too long to be answered in a simple FAQ.

Ruby is unavailable for general access. Please follow this link to request access.
TIP: Remember to check the menu to the right of the page for related pages with more information about Ruby's specifics.

Ruby, named after the Ohio native actress Ruby Dee, is The Ohio Supercomputer Center's newest cluster.  An HP built, Intel® Xeon® processor-based supercomputer, Ruby provides almost the same amount of total computing power (~144 TF) as our former flagship system Oakley on less than half the number of nodes (240 nodes).  Ruby also features two distinct sets of hardware accelerators; 20 nodes are outfitted with NVIDIA® Tesla K40 and another 20 nodes feature Intel® Xeon® Phi coprocessors.

Glenn, Oakley

STAR-CCM+ provides the world’s most comprehensive engineering physics simulation inside a single integrated package. Much more than a CFD code, STAR‑CCM+ provides an engineering process for solving problems involving flow (of fluids and solids), heat transfer and stress. STAR‑CCM+ is unrivalled in its ability to tackle problems involving multi‑physics and complex geometries.  Support is provided by CD-adapco.

OSC Help consists of technical support and consulting services for OSC's high performance computing resources. Members of OSC's HPC Client Services group staff OSC Help.

Before contacting OSC Help, please check to see if your question is answered in either the FAQ or the Knowledge Base. Many of the questions asked by both new and experienced OSC users are answered in these web pages.


MPJ-Express is a Java library that provides message passing capabilities for parallel computing in Java applications.

MPJ-Express is available on Oakley.

We provide a number of web portals for our user community.

ARMSTRONG allows users to monitor their account summary information – RU balances and usage. In addition, PIs can manage their authorized users and keep their grants and publications up to date.


This two hour workshop will provide an introduction to OSC resources and how to access them. Topics include:

  • High performance computing concepts.
  • Hardware and software available at OSC.
  • Getting allocations and accounts.
  • How to connect and log in.
  • How to move data on and off the systems.
  • Introduction to batch processing.
  • Storage and file systems.

Optional hands-on participation: 

OSC offers perioding training both at our facility and at universities across the state on a variety of topics. Additionally, we will partner with other organizations to enable our users to access additional training resources. Here you can find copies of the materials from recent training events.

OSC HPC resources use an operating system called "Linux", which is a UNIX-based operating system, first released on 5 October 1991. Linux is by a wide margin the most popular operating system choice for supercomputing, with over 90% of the Top 500 list running some variant of it. In fact, many common devices run Linux variant operating systems, including game consoles, tablets, routers, and even Android-based smartphones.