Search our client documentation below, optionally filtered by one or more systems.
Supercomputer:
We are currently experiencing temporary instability on the Ascend login nodes.
A rolling reboot is in progress to address CVE-2026-23111 for all clusters, including Ascend, Cardinal, and Pitzer.
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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 for large language models (LLMs). This module also includes Open-WebUI, which provides an easy-to-use web interface.
Ascend, Cardinal, 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
Ascend, Cardinal, Pitzer
Introduction
osc-seff is a command developed at OSC for use on OSC's systems and provides a the CPU resource data of the seff command with the GPU resource data of gpu-seff.
Ascend, Cardinal, Pitzer
Introduction
gpu-seff is a command developed at OSC for use on OSC's systems and is similar providing GPU resource data, similar to the CPU resource data reported by the seff command.
Ascend
The following are technical specifications for Quad GPU nodes.
- Number of Nodes
-
24 nodes
- Number of CPU Sockets
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48 (2 sockets/node)
- Number of CPU Cores
-
2,304 (96 cores/node)
- Cores Per Node
-
96 cores/node (88 usable cores/node)
Ascend
We use Slurm syntax for all the discussions on this page. Please check how to prepare slurm job script if your script is prepared in PBS syntax.
