Sixth NASTRAN Users' Colloquium

NASA Conference Publication 2018

Sixth NASTRAN Users' Colloquium

Held at Lewis Research Center Cleveland, Ohio October 4-6, 1977

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TABLE 3.- COMPARISON OF NASTRAN DEMONSTRATION PROBLEM EXECUTION TIMES ON THE CDC CYBER 175 USING A NEW COMPILER

Run Time (Plot Time), CPU Sec. Demonstration Problem RUNX Compiler, L16. 0.1 FTN Compiler, L16. 0.8

% Reduction of RUNX Times

1-1-1

11.825

10.021

15.3

3-6-1

8.025

6.417

20.0

8-1-3

16.996

15.473

9.0

9-4-1

8.983 (.004)

7.728 (.003)

14.0

10-2-1

18.083 (.002)

14.493 (.003)

19.9

12-1-1

75.205 (23.979)

66.808 (12.141)

11.2

15-1-1

18.353

16.956

7.6

4.849

3.827

21.1

7-2-1

493.356

312.307

36.7

TOTALS

655.675

454.03

30.75

1-12-2

xviii

MANAGEMENT OF NASTRAN DEVELOPMENT AND MAINTENANCE IN A MULTI-DIVISION CORPORATION W. D. Mock* and R. Narayanaswami** Rockwell International ABSTRACT Managing the NASTRAN program development and maintenance in a multidivison aerospace corporation is an involved process that presents technical and management-related challenges. This paper presents an overview (attached schematic) of the NASTRAN program management system developed and implemented at Rockwell International. The NASTRAN Level 16.0 as released through COSMIC was installed on IBM OS 370/168 and CYBER 175 computing systems located at Rockwell's Central Computing Center. The basic program has been modified to incorporate technical and efficiency improvements. Eleven divisions of Rockwell International participate in NASTRAN Group Service, which develops and maintains the Rockwell NASTRAN program system. A Rockwell NASTRAN Configuration Control Board with representation from the participating divisions provides divisional inputs to the program development. The Rockwell NASTRAN program manager and project engineer administer the management and technical direction of the Rockwell NASTRAN program development.

Rockwell NASTRAN Program Manager. ** Rockwell NASTRAN Project Engineer.

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