CRI Cray J90se - Ouray

Main content

Cray J90 system

Cray Research, Inc.
In use: January 1, 1997 - November 30, 2001
Production use
Peak teraflops: 0.00
Processors: 24
Clock speed: 0.10GHz
Memory (terabytes): 0.00TB
Electrical power consumption: 7.50 kW
Paired with: CRI Cray J90

Ouray became available to users on 12 May 1997. It had been initially ordered with 20 CPUs, but SGI/Cray offered NCAR an additional 4 CPUs at no cost in compensation for an unexpectedly long and laborious checkout of the system. The additional CPUs were installed in the system on 27 May 1997.

Ouray had 1,024 megawords (8 gigabytes) of memory, 150 gigabytes of disk, a clock period of 10 nanoseconds, HIPPI connectivity to the Mass Storage System, and a sustained performance of about 1.5 gigaflops. It ran the UNICOS operating system and supported Fortran 77/90, C, and C++ compilers. It offered mathematical and statistical software and many vendor-supplied utilities, including Message Passing Toolkit.

When it was installed, Ouray's large memory offered community users the opportunity to run much larger jobs than they could be run before. In fact, it had 16 times as much memory than NCAR's old workhorse, the Y-MP8/864 (shavano). Although its processor speed was about half the speed of a Y-MP processor, it could sustain up to twice the gigaflops as shavano due to its increased number of processors and vastly increased memory.

Ouray was decommissioned on 30 November 2001.

Previous Page
CRI Cray C90
Next Page
HP Exemplar