Computer support

MODULEF runs successfully on a number of computers such as HP700, CRAY, HP/Apollo, IBM, SILICON, SUN, KSR... etc.

The library source code is given either on cartridge.

For those users working on a UNIX system, the MODULEF implementation is now facilitated by the use of a makefile for installation.

In addition, the MODULEF system requires a Fortran 77 compiler with the following two extensions:

• If an array of type INTEGER is the actual argument in a subroutine, the corresponding dummy argument can either be an array of type INTEGER, REAL or DOUBLE PRECISION.
• A variable of type INTEGER must be large enough to contain 4 characters (in general, 32 bits or more).

The minimum configuration is indicated below.

• Installation :
  The minimum disc space required for the installation of the MODULEF system is approximately 100 Mo. For example, on SUN4 this space is occupied as follows:
  

  

  These values are merely indicative as they depend on the machine used, the compilation options selected, and the executable files created (it is not obligatory to create all the executables).

• Utilisation :
  The memory necessary to execute MODULEF depends on the problem under consideration. The larger the number of unknowns, the larger the size of the super-array to be reserved. As an indication, a 2D elasticity problem with triangles and degrees of freedom ( nodes) requires:

  

  This problem was solved by a simple conjugate gradient method (one D.S. AMAT and one D.S. B) with the following configurations:
  

  

The organisation of the directories containing the MODULEF source code and the non-portable part is shown in figures and , respectively.

  
Figure: Organisation of the MODULEF source code.

  
Figure: Organisation of the non-portable part of MODULEF