Scientific Computing at Jefferson Lab

Scientific Computing has two missions: Experimental Physics Analysis and Simulation, and Lattice QCD Computing. Activities include deploying and operating computing resources, and research and developments in High Performance Computing.  

Many resources (file servers, offline storage, wide
area networking and sometimes compute nodes) are shared between the two missions with appropriate
allocations.  Details are found at the following links:

Cluster Status

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Volatile Area Data Management Policy

The /volatile area is managed by an automated process that cleans up periodically in multiple steps as listed below. In the rules mentioned below the target threshold is defined as the "aggregate used space by all projects".

Cache manager policy

When a project is over their High Quota limit the following data backup and deletion policies will be enforced.

/cache Backup policy:

LQCD User's Guide

This guide is meant to cover everything related to using the LQCD Computing Facilities at Jefferson Lab, from batch systems to file storage and management.  More detailed information on the hardware available at Jefferson Lab is contained in the companion book, Scientific Computing Resources.

Contact Support

Emailing is the best way to reach us and will elicit the quickest response. Please do not contact any of the JLab LQCD support staff directly. Emailing hpc-admin will open a support ticket which is tracked and we will try our best to resolve your issue.

Cluster Status


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Each project is allocated space on the following shared storage resources which are visible from both interactive and compute nodes:

KNL System Overview

System Overview