Bernese GPS Software Version 5.0 - Bernese GNSS Software

21.4.1 Maximum Dimensions
21.4 Programming Standards and Conventions
Although the memory of a number of arrays is allocated dynamically still many dimensions
are predefined in module files. Most of the main programs have the following line in the
declaration part:
USE m maxdim, ONLY: max...
The module file ${I}/M MAXDIM.f90 (Figure 21.2) can be found in the include directory
${C}/INC/FOR. Three memory models containing maximum dimensions are defined
in this file (SMALL, MEDIUM, LARGE). They are distinguished by the preprocessor commands
#ifdef and #endif. On UNIX platforms the appropriate model is selected by yourself
for your computer platform during the installation of the Bernese GPS Software.
The model you are using on your platform is saved in the variable MEMSIZE in the file
${X}/EXE/LOADGPS.setvar. To increase a specific parameter (e.g., MAXSTA), you may
change the corresponding entry (e.g., change MAXSTA=350 to MAXSTA=400 for memory
model LARGE). For Windows platforms the MEDIUM memory model is installed by
default. Three zip archives containing all executables of the Fortran programs compiled
with the SMALL, MEDIUM, and LARGE, respectively, are available on the distribution CD.
Simply extract the files to the %XG% directory. Adapt the memory model specified in
%X%\EXE\LOADGPS.setvar accordingly.
It is recommended to recompile the entire source code by running the COMPLINK command
if you have changed one of the maximum dimensions in ${I}/M MAXDIM.f90.
Problems related to the change of a maximum dimension parameter may arise if the size
of the computer memory is insufficient to allow for the increased program size. This might
happen if “memory-critical” parameters are changed such as the parameters MAXPAR,
MAXSAS, MAXFLS, MAXSNG in program GPSEST. The increased program size may also
increase the program run-time considerably, if the operating system starts swapping in and
out parts of the memory.
21.4.2 Recompilation of Particular Programs
A set of scripts is provided in the ${X}/EXE directory for the compilation and linking of
programs and routines. For the names and the use of these scripts, we refer to the chapter
on the installation of the Bernese GPS Software on the different platforms (see Chapter 23).
Bernese GPS Software Version 5.0 Page 473