Search our client documentation below, optionally filtered by one or more systems.
Supercomputer:
Search Documentation
Search Documentation
Pitzer
While OSC has upgraded the Pitzer cluster to RHEL 9, you may encounter difficulties when migrating jobs from RHEL 7 to the new system. To help you continue your research, we provide a containerized RHEL 7 environment on Pitzer RHEL 9. This container replicates the original RHEL 7 system and software environment used on Pitzer.
Pitzer
Compilers
The Pitzer cluster (on RHEL 9) supports C, C++, and Fortran programming languages. The available compiler suites include Intel, oneAPI, and GCC. By default, the Intel development toolchain is loaded. The table below lists the compiler commands and recommended options for compiling serial programs. For more details and best practices, please refer to our compilation guide.
Pitzer
The Pitzer RHEL 9 cluster (hereafter referred to as "Pitzer") is now running on Red Hat Enterprise Linux (RHEL) 9, introducing several software-related changes compared to the RHEL 7 environment used on the Pitzer. These updates provide access to modern tools and libraries but may also require adjustments to your workflows. Key software changes and available software are outlined in the following sections.
Pitzer
During the early access period, the programming environment and software packages will keep being updated; and the system may go down or jobs may be killed with little or no warning. If your work won't tolerate this level of instability, we recommend that you use other clusters instead.
FY26 budgets: Action may be required
- By default, the majority of budgets have an expiration of Monday, June 30, 2025.
- Most Ohio academic clients will need to set new budgets for FY26 before June 30 to avoid service disruption, depending on the project type as detailed below. FY26 is the period of July 1, 2025 through June 30, 2026.
Ascend, Cardinal, Pitzer
Intel's implementation of the Message Passing Interface (MPI) library. See Intel Compilers for available compiler versions at OSC.
Cardinal
Ollama is an open-source inference server supporting a number of generative AI models. This module also includes Open-WebUI, which provides an easy-to-use web interface.
Ascend, Pitzer
Ruby is a dynamic, open source programming language with a focus on simplicity and productivity.
Availability and Restrictions
Versions
The following versions of ruby are available on OSC clusters:
Options:
- Duo Mobile: You can install Duo Mobile on your smartphone or tablet. It will give you two ways to authenticate either through DUO push notification or DUO mobile passcode
- Text Message Passcode: You can register your phone and request a passcode via text message. It will send you a single use passcode via text message
- Phone Call: You can register your phone and request a phone call. It will call you and provide a single use passcode
