Introduction

High-performance computing (HPC) at the National Security Agency (NSA) is multilevel and widely distributed among users. NSA has six major HPC complexes that serve communities having common interests. Anywhere from 50 to several hundred individuals are served by any one complex. HPC is dominated by a full line of systems from Cray Research,

Inc., supplemented by a few other systems. During the past decade, NSA has been driving toward a high level of standardization among the computing complexes to improve support and software portability. Nevertheless, the standardization effort is still in transition. In this talk I will describe the HPC system at NSA. Certain goals of NSA, as well as the problems involved in accomplishing them, will also be discussed.