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3. Continuity and Predictability
Pages 18-21

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From page 18...
... Capability machines stretch the scalability of current supercomputing technology to its limits they are designed for the most demanding computational problems. Typically, the solutions to some of the computational problems within a mission organization will not exploit the full capability of such systems, either because the problem does iAs an example, an ASCI code has contributed to the yield reanalysis of a particular weapon that resulted in a revised certified yield.
From page 19...
... The high-volume commodity market produces components, from processor chips to complete machines, with price-performance ratios difficult to achieve in any low-volume product. In the future, as in the past, there will continue to be opportunities to build larger machines with these components, whether as clusters of multiprocessors with standard I/O interfaces or as more integrated and higher bandwidth machines like Red Storm (using commodity AMD processors)
From page 20...
... Government support for the development of the unique portable parallel debugger TotalView, which is marketed by Etnus and essential in supercomputing but of problematic economic viability in the broader computing marketplace, is a success story that needs to be repeated many times. Neither the current limited investments of platform vendors nor open source code developed by the national laboratories, industry, and academia are likely, by themselves, to fulfill the need for the standardized, high-quality programming environments that are needed to enhance programmer productivity in high-performance computing.
From page 21...
... Supercomputer system software must provide continuing support for the basic operations used in the applications by keeping the legacy software running until it can be replaced, by providing tools for performance tuning and debugging on new Platforms. and bv Providing effective methods for Porting and evolution.


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