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Owens, Pitzer

OSC will be refreshing the software stack for Owens and Pitzer on May 19, 2020. This will be done in a system-wide downtime. During the software refresh, some default versions will be changed to be more up-to-date. Information about the new default versions, as well as all available versions of each software package will be included on the corresponding OSC software webpage.

Owens, Pitzer, Ruby

An ACL (access control list) is a list of permissions associated with a file or directory. These permissions allow you to restrict access to a certain file or directory by user or group. 

Free Academic Ansys Desktop License (2020 R1 version)

Ansys, Inc. is generously providing a temporary free trial license for home use as a COVID-19 response for OSC academic users. You can download the installer and license to your desktop following the instructions below. The license will expire on Dec 31, 2020. (The original expiry date was May 31, 2020, but it has been extended to Dec 31, 2020)

Owens, Pitzer, Ruby

NetCDF (Network Common Data Form) is an interface for array-oriented data access and a library that provides an implementation of the interface. The netcdf library also defines a machine-independent format for representing scientific data. Together, the interface, library, and format support the creation, access, and sharing of scientific data.

For mpi-dependent codes, use the non-serial NetCDF module.

This document shows you how to use the POSIX ACL permissions system. An ACL (access control list) is a list of permissions associated with a file or directory. These permissions allow you to restrict access to a certian file or directory by user or group.

These commands are useful for project and scratch dirs located in /fs/proejct, /fs/scratch, /fs/ess.

Understanding POSIX ACL

An example of a basic POSIX ACL would look like this:

Owens, Pitzer, Ruby

Edit profile

Profile information can be changed by logging in with valid osc credentials to the OSC client portal and navigating to the profile page by clicking the display name in the upper right corner of the page and selecting Edit my profile.

OSC asks that the project be marked with the specific type of data that will be stored. This can be done by marking the project with special properties.

Creating a new sensitive data project

When creating a new project that will contain sensitive data, the PI can use a multi-select box to mark the applicable types of data. See the image below:

Owens, Pitzer, Ruby

HDF5 is a general purpose library and file format for storing scientific data. HDF5 can store two primary objects: datasets and groups. A dataset is essentially a multidimensional array of data elements, and a group is a structure for organizing objects in an HDF5 file. Using these two basic objects, one can create and store almost any kind of scientific data structure, such as images, arrays of vectors, and structured and unstructured grids.

For mpi-dependent codes, use the non-serial HDF5 module.

Owens, Ruby

This  document will guide you on how to launch Rstudio App and acess Parallel R workshop material through OSC onDemand.

Step 1: Log on to Please see this guide on how to use OnDemand service.

Step 2: Launch Rstudio App

Owens, Pitzer


checkgpu is a command developed at OSC for use on OSC’s systems to report information regarding the usage of OSC’s GPU nodes. It reports various information on the usage and availability of the GPU nodes.