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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.