https://www.nas.nasa.gov/hecc/support/kb/121/ https://www.nas.nasa.gov/hecc/support/kb/preparing-to-run-on-endeavour_652.html The Endeavour supercomputer comprises two nodes, Endeavour3 and Endeavour4. Each of the two systems includes 896 cores and six terabytes (TB) of global shared memory. See Endeavour Configuration Details for more hardware information. Endeavour 3... Running Jobs with PBS/PBS on Endeavour Wed, 04 Nov 2026 12:52:58 -0800 https://www.nas.nasa.gov/hecc/support/kb/reserving-a-dedicated-compute-node_556.html The reservable front end feature allows you to reserve dedicated access to an Electra compute node for up to 90 days. You can use the node the same way you would use a PFE—to submit jobs and perform other tasks such as post-processing,... Running Jobs with PBS/Managing Jobs Fri, 16 Oct 2026 11:31:42 -0700 https://www.nas.nasa.gov/hecc/support/kb/pbs-job-queue-structure_187.html Running Jobs on Athena To run a PBS job on the Athena compute nodes, submit the job from one of the Athena front-end systems (ATHFEs) to one of the queues managed by the PBS server pbs06a: devel, normal, long, and wide. Note: You cannot submit... Running Jobs with PBS/PBS on Athena Wed, 14 Oct 2026 13:50:20 -0700 https://www.nas.nasa.gov/hecc/support/kb/requesting-cabeus-gpu-resources_646.html The Cabeus cluster comprises two types of NVIDIA GPU nodes, including nodes with x86_64-based CPUs and nodes with aarch64-based CPUs. Note: You must have a Standard Billing Unit (SBU) allocation specifically for GPUs in order to use the GPU... Running Jobs with PBS/PBS on Cabeus Tue, 13 Oct 2026 11:49:45 -0700 https://www.nas.nasa.gov/hecc/support/kb/cabeus-gpu-nodes_298.html Cabeus, named after a lunar crater in the south polar region of the Moon, is a cluster system that supports HPC and machine learning/artificial intelligence (ML/AI) applications that can benefit from the GPU technology. GPU Hardware Summary The... Running Jobs with PBS/PBS on Cabeus Tue, 13 Oct 2026 11:32:01 -0700 https://www.nas.nasa.gov/hecc/support/kb/preparing-to-run-on-cabeus-grace-hopper-nodes_702.html Cabeus includes 538 GPU nodes based on the NVIDIA GH200 Grace Hopper Superchip. To help you prepare for running jobs on the Grace Hopper GPU nodes, this short user guide includes information on the general configuration of the nodes, compiling... Running Jobs with PBS/PBS on Cabeus Tue, 13 Oct 2026 09:47:41 -0700 https://www.nas.nasa.gov/hecc/support/kb/using-tmpdir-as-a-temporary-filesystem-for-gpu-jobs_687.html For single-node I/O that uses memory-based temporary filesystem, we recommend using a job-based temporary directory, $TMPDIR, instead of the node-wide /tmp directory. This recommendation is particularly important for jobs running on the NAS GPU... Running Jobs with PBS/PBS on Cabeus Mon, 14 Sep 2026 17:08:35 -0700 https://www.nas.nasa.gov/hecc/support/kb/preparing-to-run-on-cabeus-a100-gpu-nodes_686.html The Cabeus cluster comprises multiple NVIDIA GPU nodes, including: 128 nodes with Milan CPU and NVIDIA A100 GPUs (model=mil_a100) 350 nodes with NVIDIA GH200 Superchip (model=gh200) Among them, the gh200 nodes are served by their own front... Running Jobs with PBS/PBS on Cabeus Mon, 14 Sep 2026 17:06:11 -0700 https://www.nas.nasa.gov/hecc/support/kb/how-to-run-a-graphics-application-in-a-pbs-batch-job_523.html In order to run a graphics application in a PBS batch job, you must provide a value for the DISPLAY environment variable—even if you do not have or need an actual display for the job. If the batch job cannot find this value, it will quit and return... Running Jobs with PBS/Optimizing/Troubleshooting Mon, 14 Sep 2026 16:57:27 -0700 https://www.nas.nasa.gov/hecc/support/kb/common-reasons-for-being-unable-to-submit-jobs_197.html Listed below are several common reasons why a job submission might not be successful. Compute Model not Recognized If you get the following message after submitting a PBS job: qsub: Unrecognized model xxx It is possible that you are... Running Jobs with PBS/Optimizing/Troubleshooting Mon, 14 Sep 2026 16:53:28 -0700 https://www.nas.nasa.gov/hecc/support/kb/portable-batch-system-(pbs)-overview_126.html All NAS facility supercomputers use the Portable Batch System (PBS) from Altair for batch job submission, job monitoring, and job management. Note that different systems may use different versions of PBS, so the available features may vary slightly... Running Jobs with PBS Mon, 14 Sep 2026 16:46:44 -0700 https://www.nas.nasa.gov/hecc/support/kb/electra-and-aitken-devel-queue_290.html NAS provides a special queue on Electra and Aitken, called the devel queue, that is designated for development work. Using this queue for development work provides faster turnaround than using other, non-designated queues. Note: The devel queue... Running Jobs with PBS/PBS on Electra Tue, 01 Sep 2026 11:05:13 -0700