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.
Ascend
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.
Technical Specifications
The following are technical specifications for Quad GPU nodes.
- Number of Nodes
-
24 nodes
- Number of CPU Sockets
-
48 (2 sockets/node)
- Number of CPU Cores
-
2,304 (96 cores/node)
- Cores Per Node
-
96 cores/node (88 usable cores/node)
- Internal Storage
-
12.8 TB NVMe internal storage
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.
Programming Environment
Compilers
C, C++ and Fortran are supported on the Ascend cluster. Intel, oneAPI, GNU Compiler Collectio (GCC) and AOCC are available. The Intel development tool chain is loaded by default. Compiler commands and recommended options for serial programs are listed in the table below. See also our compilation guide.
Software Environment
The Next Gen Ascend (hereafter referred to as “Ascend”) cluster is now running on Red Hat Enterprise Linux (RHEL) 9, introducing several software-related changes compared to the RHEL 7/8 environment used on the Pitzer and original Ascend cluster. 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.
Early User Program of Next Gen Ascend Starts 03/03/2025
The early user program for the next-generation resources now available on the Ascend cluster begins today, March 3, and will run through Monday, March 31. Check this page for more information: https://www.osc.edu/content/next_gen_ascend_1/next_gen_ascend_early_user_program
CANCELLED: System Downtime March 11 2025
The system downtime scheduled for March 11, 2025, has been CANCELLED. We will provide an updated date once available.
SSH key fingerprints
- These are the public key fingerprints for Ascend:
ascend: ssh_host_rsa_key.pub = 2f:ad:ee:99:5a:f4:7f:0d:58:8f:d1:70:9d:e4:f4:16
ascend: ssh_host_ed25519_key.pub = 6b:0e:f1:fb:10:da:8c:0b:36:12:04:57:2b:2c:2b:4d
ascend: ssh_host_ecdsa_key.pub = f4:6f:b5:d2:fa:96:02:73:9a:40:5e:cf:ad:6d:19:e5
