CRI Cray J90se - Ouray

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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 May 12, 1997. The Cray J90se had been ordered with 20 CPUs, but SGI/Cray offered NCAR an additional 4 CPUs at no cost in compensation for an unexpectedly long, laborious checkout of the system. The additional CPUs were installed in the system on May 27, 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 the 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 could be run before. In fact, it had 16 times as much memory than NCAR's old workhorse, the Y-MP8/864 called Shavano. Although its processor speed was about half that 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 November 30, 2001.

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