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To provide additional computational capacity to the Community, SCD installed a second Cray J90se (chipeta) during the spring of 1998. This system was configured with 24 CPUs and 1024 Megawords of memory and is being administered identically to the existing Cray J90se (ouray) which has been serving the Community since May 1997. The acceptance test period for chipeta was completed on March 24, 1998, and the system was made available for general use at that time. Within four hours of opening the system up for production, it was fully utilized and has effectively remained so since.
By choosing to augment the existing Parallel Vector Processing (PVP) systems with another Cray J90se, SCD has provided additional computing capacity in a familiar user environment for at least the next two years. This was designed to provide a transition period for Community users to move applications from the Cray parallel vector architectures to the new distributed shared memory architectures (such as those of the HP SPP-2000 and Silicon Graphics Cray Origin2000). In keeping with the convention of recognizing American Indian tribes and leaders established for the J90-series systems at NCAR, this system was named chipeta; Chipeta was Chief Ouray's wife.
The new Cray J90se (chipeta) has 24 CPUs, 1024 million words of central memory, 155 GB of directly attached high-performance disk, ATM, FDDI, and HiPPI network connections, and HiPPI connections to the NCAR Mass Storage System. SCD configured the software on the new Cray J90se to be identical to the current ouray system: the same UNICOS, compiler, libraries, and tools revision levels. SCD also configured the NQS job queues and user limits the same as ouray. SCD is running these two systems as "twins" and chose not to configure them in a "cluster" arrangement primarily for stability and simplicity, but also because SCD is focusing its resources on integrating the new DSM systems, the Silicon Graphics Cray Origin2000 and HP SPP-2000, into the CSL and Community computational environments.
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