# What is the MARS environment¶

3 Directories
• MARS environment is composed by 3 directories :
• MARS_CONFIG : for compilation and code modification by the user
• COMPILE_MARS : where the compile code is (The user doesn’t need to go in this directory and he must not modify files otherwise user’s changes might be lost)
• RUN_MARS : for run simulations by the user, and where there are input and output files
3 scripts
• mkconfdir : create the directories of a configuration (MARS environnement : List of useful commands)
• makefile : manage the configuration (choice of rank, test case, previous configurations), and compile the code by calling Makefile.linux or Makefile.datarmor
• Makefile.linux or Makefile.datarmor : MARS compilation with CPP keys
Reference code
• The originial code (reference code) is placed in the Reference directory $HOMEMARS/.. • which contains : • MARS sources, • Scripts of MARS environment, • Makefile for the compilation, • Input files as namelists and ‘*’.dat (river.dat, outflow.dat…) • Documentation : manuals, faq • Module example (fortran) • Libraries (netcdf, io_netcdf) • Code rules • The directory$HOMEMARS is defined in the user file : .cshrc

Available directories