ParaView is an open-source, multi-platform application designed to visualize data sets of size varying from small to very large. ParaView was developed to support distributed computational models for processing large data sets and to create an open, flexible user interface.

Availability and Restrictions


ParaView is available on Owens and Pitzer Clusters. The versions currently available at OSC are:

New User Resource Guide

Getting Started at OSC

This guide was created for new users of OSC.

It explains how to use OSC from the very beginning of the process, from creating an account right up to using resources at OSC.

OSC account setup

The first step is to make sure that you have an OSC username.


TURBOMOLE is an ab initio computational chemistry program that implements various quantum chemistry algorithms. It is focused on efficiency, notably using the resolution of the identity (RI) approximation.


GLPK (GNU Linear Programming Kit) is a set of open source LP (linear programming) and MIP (mixed integer problem) routines written in ANSI C, which can be called from within C programs. 

Availability and Restrictions


The following versions are available on OSC systems:


ANSYS CFX (called CFX hereafter) is a computational fluid dynamics (CFD) program for modeling fluid flow and heat transfer in a variety of applications.

Availability and Restrictions

CFX is available on the Owens Cluster. You can see the currently available versions in the table on the main Ansys page here.

Out-of-Memory (OOM) or Excessive Memory Usage

Problem description

A common problem on our systems is that a user's job causes a node out of memory or uses more than its allocated memory if the node is shared with other jobs.

If a job exhausts both the physical memory and the swap space on a node, it causes the node to crash. With a parallel job, there may be many nodes that crash. When a node crashes, the OSC staff has to manually reboot and clean up the node. If other jobs were running on the same node, the users have to be notified that their jobs failed.

Quantum Espresso

Quantum ESPRESSO (QE) is a program package for ab-initio molecular dynamics (MD) simulations and electronic structure calculations.  It is based on density-functional theory, plane waves, and pseudopotentials.

HOWTO: Use VNC in a batch job

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.


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. CD-adapco usually releases new version of STAR-CCM+ every four months.