NAS Applications and Advanced Architectures

This paper examines the applications most commonly run on the supercomputers at the Numerical Aerospace Simulation (NAS) facility. It analyzes the extent to which such applications are fundamentally oriented to vector computers, and whether or not they can be efficiently implemented on hierarchical memory machines, such as systems with cache memories and highly parallel, distributed memory systems. Bailey: NASA Ames Research Center, Mail Stop T27A-1, Moffett Field, CA 94035-1000; dbailey@nas.nasa.gov. Bailey is an employee of NASA. Biswas: NASA Ames Research Center, Mail Stop T27A-1, Moffett Field, CA 94035-1000; biswas@nas.nasa.gov. Biswas is an employee of MRJ Technology Solutions. This work was performed under contract NAS2-14303. Van Der Wijngaart: NASA Ames Research Center, Mail Stop T27A-1, Moffett Field, CA 94035-1000; wijngaar@nas.nasa.gov. Van Der Wijngaart is an employee of MRJ. This work was performed under contract NAS2-14303. 1. Introduction The usefulness of traditio...