osc-seff
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.
HPC
gpu-seff
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.
Batch Limit Rules
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.
Memory limit
It is strongly suggested to consider the memory use to the available per-core memory when users request OSC resources for their jobs.
Technical Specifications
The following are technical specifications for Cardinal.
- Number of Nodes
-
378 nodes
- Number of CPU Sockets
-
756 (2 sockets/node for all nodes)
- Number of CPU Cores
-
39,312
- Cores Per Node
-
104 cores/node for all nodes (96 usable)
Migrating jobs from other clusters
This page includes a summary of differences to keep in mind when migrating jobs from other clusters to Ascend.
Guidance for Pitzer Users
Hardware Specifications
| Ascend (PER NODE) | Pitzer (PER NODE) | ||
|---|---|---|---|
| Regular compute node | n/a |
40 cores and 192GB of RAM 48 cores and 192GB of RAM | |
Batch Limit Rules
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.
Please check Next Gen Ascend early user program page for updated information.
Memory limit
2022 Storage Service Upgrades
In October 2022, OSC retires the Data Direct Networks (DDN) GRIDScaler system deployed in 2016 and expands the IBM Elastic Storage System (ESS) for both Project and global Scratch services. This expands the total capacity of Project and Scratch storage at OSC to ~16 petabytes with better performance.
HOWTO: Establish durable SSH connections
In December 2021 OSC updated its firewall to enhance security. As a result, SSH sessions are being closed more quickly than they used to be. It is very easy to modify your SSH options in the client you use to connect to OSC to keep your connection open.
In ~/.ssh/config (use the command touch ~/.ssh/config to create it if there is no exisitng one), you can set 3 options:
Owens Programming Environment (PBS)
This document is obsoleted and kept as a reference to previous Owens programming environment. Please refer to here for the latest version.
