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Effective Use of Cray SupercomputersThe effective use of a supercomputer depends on many aspects, including the ability of users to write efficient programs to use the resources of the system in an optimal manner. However, it is the responsibility of the system managers of these systems to insure the maximum effectiveness of the overall system is achieved. Many varying techniques have been developed at the Numerical Aerodynamic Simulation (NAS) Program to advance the management of these critical systems. Many of the issues and techniques used for managing supercomputers are common to multi-user UNIX systems, regardless of the version of UNIX or the power of the hardware. However, a UNICOS supercomputer presents some special challenges and requires additional features and tools to be developed to effectively manage the system. Only part of the challenge is related to performance monitoring and improvement. Much of the responsibility of the system manager is to provide fair and consistent access to the system resources, which is at times a difficult problem. After an introduction to the environment at the Numerical Aerodynamic Simulation Project is given as background this paper will first discuss the areas which are common to UNDC system management. Then the paper will discuss the specific areas of UNICOS which must be used to operate the system efficiently. The paper goes on to discuss the methods of supporting individual users in order to increase their effectiveness and the efficiency of their programs. This is accomplished through a professional support staff who interact on a daily basis to support the NAS scientific client community.
Document ID
19970011755
Acquisition Source
Ames Research Center
Document Type
Reprint (Version printed in journal)
Authors
Kramer, William T. C.
(NASA Ames Research Center Moffett Field, CA United States)
Craw, James M.
(NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
August 17, 2013
Publication Date
January 1, 1989
Publication Information
Publisher: ACM
Subject Category
Computer Operations And Hardware
Report/Patent Number
NAS 1.15:112261
RNS-89-002
NASA-TM-112261
Accession Number
97N70841
Distribution Limits
Public
Copyright
Public Use Permitted.
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