||The graph shows the amount of
sustained computing capacity (in gigaflops) available to the NCAR
community over time. Note that substantial increases are provided
every 16 months on average. CISL provides this growing resource
in response to the requirements of the scientific community.
View large image.
||This chart shows the average
utilization of the production computing platforms provided by CISL.
Utilization is defined as the percent of compute nodes assigned to
a user at any one time. Blackforest was an IBM POWER3 system that
was decommissioned in January 2005. Bluesky is the IBM POWER4, and
bluevista is the IBM POWER5. Lightning is a small Linux cluster
available for production computing. Through community-directed
project allocations and efficient job scheduling, these powerful
resources are distributed as equitably as possible to all users.
View large image.
The hallmark of supercomputing at NCAR has been the provision of
robust, reliable, effective, and efficient production computing, and
of state-of-the-art storage, data analysis, data visualization services
and tools for its community of users. To fulfill such a mission, CISL
provides an environment that gives equitable access to all users, yet
strives to maximize resource utilization. These goals are achieved by
balancing the allocation and scheduling of resources with a properly
designed tactical queue structure and single-job resource limits.
In addition, CISL attempts to increase the computational capacity
available to the community on a regular basis. The acquisition and
deployment during FY2006 of the IBM POWER5 system bluevista is an
example of one such increase. Peripheral resources that complement
and supplement the high-end computing environment are upgraded and
enhanced as appropriate to match the growth in compute capacity.
Capability and capacity will increase significantly with the
ICESS procurement in
The resources in this facility are provided in support of the
NCAR strategic priority "Enhancing capability and capacity of NCAR
supercomputing." NCAR's supercomputers are managed by CISL under the
UCAR/NSF Cooperative Agreement and are supported by NSF Core funds
including CSL funding.