NEA-1327 CAPCAL.

CAPCAL, 3-D Capacitance Calculator for VLSI Purposes

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS, TYPICAL RUNNING TIME, FEATURES, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, REQUIREMENTS, LANGUAGE, OPERATING SYSTEM, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: CAPCAL.

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.

Program name	Package id	Status	Status date
CAPCAL V1.2	NEA-1327/01	Tested	02-FEB-1995
CAPCAL V1.3	NEA-1327/04	Tested	06-OCT-2004
CAPCAL V1.3	NEA-1327/05	Tested	06-OCT-2004

Machines used:

Package ID	Orig. computer	Test computer
NEA-1327/01	Many Computers	DEC VAX 6000
NEA-1327/04	HP W.S.	HP 9000
NEA-1327/05	IBM PC	PC Pentium

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3. DESCRIPTION OF PROGRAM OR FUNCTION

CAPCAL is devoted to the calculation of capacitances of three-dimensional wiring configurations are typically used in VLSI circuits. Due to analogies in the mathematical description also conductance and heat transport problems can be treated by CAPCAL. To handle the problem using CAPCAL same approximations have to be applied to the structure under investigation:
- the overall geometry has to be confined to a finite domain by using symmetry-properties of the problem
- Non-rectangular structures have to be simplified into an artwork of multiple boxes.

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4. METHOD OF SOLUTION

The electrical field is described by the Laplace-equation. The differential equation is discretized by using the finite difference method.

NEA-1327/01

The linear equation system is solved by using a combined ADI-multigrid method.

NEA-1327/04

The linear equation system is solved by using a conjugate gradient method for CAPCAL V1.3.

NEA-1327/05

The linear equation system is solved by using a conjugate gradient method for CAPCAL V1.3.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

NEA-1327/01

Certain restrictions of use may arise from the dimensioning of arrays. Field lengths are defined via PARAMETER-statements which can easily by modified. If the geometry of the problem is defined such that Neumann boundaries are dominating the convergence of the iterative equation system solver is affected.

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6. TYPICAL RUNNING TIME

Strongly depending on problem-size. Around 1
hour on a 1 MIPS machine.

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- The following Table displays the CPU (elapsed) time necessary to run the main processor CAP2 on each of the three sample problems on the VAX 6000-510 machine (running VMS) and on the DEC 3000 Model 300 X (ALPHA AXP architecture workstation running OSF/1).
                             --------------------------
                             |     Time (seconds)     |
          ---------------------------------------------
          |  Sample Problem  |  VAX/VMS  |  ALPHA/OSF |
          |    (filename)    |   (CPU)   |  (elapsed) |
          ---------------------------------------------
          |                  |           |            |
          |    CAP11.INP     |   285.2   |    35.6    |
          |                  |           |            |
          ---------------------------------------------
          |                  |           |            |
          |    CAP21.INP     |   200.3   |    24.1    |
          |                  |           |            |
          ---------------------------------------------
          |                  |           |            |
          |    CAP31.INP     |   208.6   |    22.0    |
          |                  |           |            |
          ---------------------------------------------

NEA-1327/04

A few seconds

NEA-1327/05

A few seconds

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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM

NEA-1327/04

Distributed as executable program, no source code included.

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8. RELATED AND AUXILIARY PROGRAMS:

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9. STATUS

Package ID	Status date	Status
NEA-1327/01	02-FEB-1995	Tested at NEADB
NEA-1327/04	06-OCT-2004	Tested at NEADB
NEA-1327/05	06-OCT-2004	Tested at NEADB

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10. REFERENCES

- A. Seidl et al.:
  IEEE Trans. CAD, Vol.7, No.5 (May 1988).
- H. Klose et al.:
  Proceedings of the 1988 International Electronic Devices and
  Materials Symposium
  National Sun Yat-sen University Kaohsiung, Taiwan, R.O.C.

NEA-1327/01, included references:

- A. Seidl:
  User's Guide for CAPCAL - The 3D-Capacitance Calculation for VLSI
  Purposes Version 1.2
  (July 1986).

NEA-1327/04, included references:

- A. Seidl and Joachim Obemdorfer:
CAPCAL, The 3D-Capacitance Calculator for VLSI Purposes
Version 1.3, Users Guide (October 1991)
http://www.elektrotechnik.hs-magdeburg.de/mitarbeiter/seidl/forsch/

NEA-1327/05, included references:

- A. Seidl and Joachim Obemdorfer:
CAPCAL, The 3D-Capacitance Calculator for VLSI Purposes
Version 1.3, Users Guide (October 1991) for on-line help only
http://www.elektrotechnik.hs-magdeburg.de/mitarbeiter/seidl/forsch/

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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS

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- VAX or any other machine running a FORTRAN-77 compiler
- REGIS or other graphics terminal
- The test cases were run at the NEA-DB on both DEC VAX-6000 and an ALPHA/OSF work station.

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- HP workstation running HP-UX

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- PC running MS Windows

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-1327/01	FORTRAN-77

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13. SOFTWARE REQUIREMENTS: OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

NEA-1327/01

Source codes were compiled on the VAX-6000 under VMS Version 5.5-2 with the DEC FORTRAN-77 compiler; and on the DEC 3000 Model 300X ALPHA AXP Architecture Workstation under DEC OSF/1 V2.1 using the DEC FORTRAN (f77) V3.4 compiler.

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HP-UX B.11.11

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- MS WINDOWS 2000 Professionnal (US version)
- MS WINDOWS XP Professionnal (German version)

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

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15. NAME AND ESTABLISHMENT OF AUTHORS

         Albert Seidl*
         Fachbereich Elektrotechnik
         Fachhochschule Magdeburg
         Am Kroekentor 8
         39104 Magdeburg, Germany

         Helmut Klose
         Siemens AG
         Otto Hahn Ring 6
         8000 Muenchen 83, Germany

         Mildos Svoboda
         Preysingstr.11
         8000 Muenchen 80, Germany

* Contact

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16. MATERIAL AVAILABLE

NEA-1327/04

CAPCAL.DOC     Manual as MS Word document
clean   Script to delete output files
manex1.inp     Sample input
manex2.inp     Sample input
run_capc.al    Script to run capcal
run_cape.x4    Script to run the network postprocessor
run_scre.enp   Script to plot the computed results
NEA generated sample output files for manex1.inp
NEA generated sample output files for manex2.inp
cap3.exe       Program to plot the results
cap3post.exe   Program to create a postscript plot file
capex1.exe     Capcal preprocessor
capex2.exe     Capcal linear equation solver
capex3.exe     Capcal postprocessor
capex4.exe     Network postprocessor

NEA-1327/05

Setup files
Setup cabinet files
Setup application file
NEA generated sample output files for manex1.cap
NEA generated sample output files for manex2.cap
User's guide as online help

NEA-1327/01

File name	File description	Records
NEA1327_01.001	CAPCAL Information File	482
NEA1327_01.002	Pre-processor source file for VAX/VMS	2842
NEA1327_01.003	Main processor source file for VAX/VMS	5038
NEA1327_01.004	Post processor source file for VAX/VMS	2128
NEA1327_01.005	Include file # 1	46
NEA1327_01.006	Include file # 2	61
NEA1327_01.007	Include file # 3	10
NEA1327_01.008	Include file # 4	22
NEA1327_01.009	Command file to create VMS executable files	9
NEA1327_01.010	Command file to run the sample problems	23
NEA1327_01.011	Pre-processor source file - ALPHA workstatio	2842
NEA1327_01.012	Main processor source file - ALPHA workstati	5048
NEA1327_01.013	Post processor source file - ALPHA workstati	2128
NEA1327_01.014	Sample problem # 1 (input file)	42
NEA1327_01.015	Sample problem # 2 (input file)	65
NEA1327_01.016	Sample problem # 3 (input file)	37
NEA1327_01.017	Sample output file # 1 (VAX/VMS)	952
NEA1327_01.018	Sample output file # 2 (VAX/VMS)	151
NEA1327_01.019	Sample output file # 3 (VAX/VMS)	139
NEA1327_01.020	Sample output file # 1 (ALPHA workstation)	952
NEA1327_01.021	Sample output file # 2 (ALPHA workstation)	151
NEA1327_01.022	Sample output file # 3 (ALPHA workstation)	139

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17. CATEGORIES

T. Electronics, Engineering Equipment, and Energy Systems Studies

Keywords: VLSI, electronic circuits, heat, three-dimensional.