Computer Programs

NEA-0552 OPTIM.

NEA-0552 OPTIM.

OPTIM, Minimization of Band-Width of Finite Elements Problems

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, CPU, FEATURES, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: OPTIM.

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2. COMPUTERS

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Program name	Package id	Status	Status date
OPTIM	NEA-0552/02	Tested	01-MAY-1977

Machines used:

Package ID	Orig. computer	Test computer
NEA-0552/02	IBM 370 series	IBM 370 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED: To minimize the band-width of finite element problems.

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4. METHOD OF SOLUTION

A surface is constructed from the x-y-coordinates of each node using its node number as z-value. This surface consists of triangles. Nodes are renumbered in such a way as to minimize the surface area.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

This program is applicable to 2-D problems. It is dimensioned for a maximum of 1000 elements.

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6. TYPICAL RUNNING TIME

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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM

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8. RELATED AND AUXILIARY PROGRAMS

This programme has been used to renumber the mesh used in the finite element code 'CEDRAZAL'.

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9. STATUS

Package ID	Status date	Status
NEA-0552/02	01-MAY-1977	Tested at NEADB

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10. REFERENCES

- M.Huart:
'OPTIM - A Matrix Band-Width Optimisation Program'.
Dragon Project Report 960 (Oct. 1975).

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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0552/02	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED: IBM 370 OS.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

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15. NAME AND ESTABLISHMENT OF AUTHOR

      M. Huart
      OECD High Temperature Reactor Projects
      AEE Winfrith
      Dorchester, Dorset, U.K.

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16. MATERIAL AVAILABLE

NEA-0552/02

File name	File description	Records
NEA0552_02.001	INFORMATION	2
NEA0552_02.002	OPTIM SOURCE - FORTRAN IV EBCDIC	357
NEA0552_02.003	OPTIM SAMPLE PROBLEM INPUT	472
NEA0552_02.004	OPTIM SAMPLE PROBLEM OUTPUT	2244
NEA0552_02.005	JOB CONTROL AND INFORMATION	13

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17. CATEGORIES

P. General Mathematical and Computing System Routines

Keywords: bandwidth minimization, finite element method, two-dimensional.