On the TeraGrid, what is Ranger?

The Ranger cluster at Texas Advanced Computing Center (TACC) is a Sun Constellation system configured with 3,936 four-socket, quad-core AMD Opteron nodes (62,976 compute cores), and 125TB of distributed memory. Each 2.3GHz core is capable of four flops per clock cycle, giving Ranger a theoretical peak performance of 579.3 teraflops. Multiple shared file systems are configured from 1.7PB of raw storage, managed via the Lustre Parallel File System. Nodes are interconnected with InfiniBand technology, with two non-blocking Sun Magnum switches acting as the core of the fabric.

Ranger is intended for users with codes scalable to thousands of cores (1,024 and above). A batch queue is available to help develop, test, and scale codes up to 1,024 compute cores. Four separate login nodes provide interactive connectivity to the system for compiling and interfacing with the batch queuing system.

For more, see the Ranger user guide.

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.

Comments/Questions/Corrections