Gray

Overview of Gray

The Gray cluster is solely a development platform to be used alongside the Indiana Economic Development Corporation (IEDC) machine Black. Gray is a place to compile code (mostly serial Condor applications) that is to be run on Black. Black is currently housed with Indiana University's "Big Red" system in Bloomington, Indiana. However, Gray is located on Purdue's West Lafayette campus. Gray includes a front-end server, several worker-node blades, and extra front-end hosts for campus and TeraGrid Condor users.

Detailed Hardware Specification

Gray nodes feature the same architecture as Black and Indiana University's "Big Red" for compatibility when compiling code. All are IBM JS21 Bladeservers with 8 GB of memory.

Number of Nodes Processor Cores per Node Memory per Node Interconnect TeraFlops
4 Dual-Processor 2.3 GHz Dual-Core PowerPC 970MP 4 8 GB Gigabit Ethernet 0.07

All Gray nodes run SuSE Linux Enterprise Server 9. There is no job scheduling system, as Gray is to be used only for source code compilation. Operating system patches are applied monthly or as security needs dictate.