Running Jobs
Zilu Wang, Steve Lantz
Cornell Center for Advanced Computing
10/2026 (original)
Horizon is the flagship of the NSF Leadership-Class Computing Facility (LCCF), provided through The University of Texas at Austin's Texas Advanced Computing Center (TACC). It is intended to be the largest academic supercomputer that is available for open research in the United States. Horizon, like its precursor Vista, is targeted towards scientific computing projects that require highly capable resources for AI and other HPC applications. It accordingly features NVIDIA "superchips" that closely couple CPUs with GPUs.
This topic describes how to use the Slurm Workload Manager to access Horizon's compute nodes and run your large-scale jobs.
Objectives
After you complete this topic, you should be able to:
- Explain the purpose of the job accounting system
- Define the main parallel processing methods available in Horizon
- Describe how to submit a job to a queue
- Explain how to run a batch job in Horizon
- Discuss the utility of running an interactive batch job
Prerequisites
Horizon is the centerpiece of the NSF Leadership-Class Computing Facility at TACC, so its prospective users are already likely to have a high degree of familiarity and experience with HPC and parallel computing. The pace of this roadmap is meant to be relatively brisk, for that reason.
With that being understood, there are no formal prerequisites for this Virtual Workshop roadmap. A working knowledge of Linux is recommended; if you need more preparation in Linux, try working through the Linux roadmap first.
CVW material development is supported by NSF OAC awards 1854828, 2321040, 2323116 (UT Austin) and 2005506 (Indiana University)