On the TeraGrid, what is Lonestar?

On the TeraGrid, Lonestar (tg-login.lonestar.tacc.teragrid.org) is the Dell PowerEdge Linux cluster at the Texas Advanced Computing Center (TACC).

Lonestar is configured with 5,840 compute-node cores, 11.6TB of total memory, and 106TB of local disk space. Peak performance is rated at 63 teraflops. The system supports a 70TB globally accessible Lustre parallel file system. Nodes are interconnected with InfiniBand technology in a fat-tree topology with a 1GB per second point-to-point bandwidth. A 2.8PB archive system and a 5TB SAN are available through the login/development nodes.

Lonestar is intended primarily for parallel applications scalable up to 4,096 processing cores. Normal batch queues enable you to run up to 24-hour simulations that utilize up to 512 cores. Simulations requiring longer run times and/or more cores are accommodated via a special queue after approval from TACC technical staff. Serial and development queues are available for code development, conversion of serial applications to parallel, and single-CPU performance analysis.

For more, see the Lonestar user guide.

Note: This is a TeraGrid Roaming resource. See the TeraGrid User Support documentation for a dynamically generated list of all Roaming resources.

For further information about compute and visualization resources on the TeraGrid, see the Resource Catalog in the TeraGrid User Support documentation.

This document was developed with support from the National Science Foundation (NSF) under Grant No. 0503697 to the University of Chicago and subcontracted to Indiana University. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF.

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