Copyright (C) 2002 Regents of the University of Michigan, portions used with permission. For more information, see http://csem.engin.umich.edu/tools/swmf

This document outlines how to install the stand-alone BATSRUS code on your system and how to create and access the documentation.
Note that BATSRUS is part of the SWMF. If you already have the SWMF, you can use BATSRUS inside the SWMF to build the stand-alone BATSRUS code.

To learn more about the BATSRUS, including how to compile and run the code, please consult the user manual. To install the BATSRUS and create the user manual please follow the instructions below.

Get the full source code from GitHub/SWMFsoftware after uploading your machine's ssh key to github.

The minimum requirement is the BATSRUS repository.

Read the Git instructions about (optional) registration, passwordless access, mail notifications, and using the gitclone script.

cd {where_you_want_to_have_batsrus}
gitclone BATSRUS

You may also need the open-source SWMF_data repository that contains large data files in GM/BATSRUS and SC/BATSRUS subdirectories for BATSRUS. The other subdirectories in SWMF_data can be removed to save disk space. The SWMF_data should be put into the home directory:

cd
gitclone SWMF_data

Some data files used by the Center for Radiative Shock Hydrodynamics (CRASH) are in the CRASH_data repository that is available to registered users. If needed, it has to be placed into the home directory.

cd
gitclone CRASH_data

Many machines used by UofM are already recognized by the share/Scripts/Config.pl script, which is called by the Config.pl scripts in BATSRUS. For these platform/compiler combinations installation is very simple:

cd BATSRUS
./Config.pl -install

On other platforms the Fortran (and C) compilers should be explicitly given. To see available choices, type

./Config.pl -compiler

Then install the code with the selected Fortran (and default C) compiler, e.g.

./Config.pl -install -compiler=gfortran

A non-default C compiler can be added after a comma, e.g.

./Config.pl -install -compiler=mpxlf90,mpxlc

For machines with no MPI library, use

./Config.pl -install -nompi -compiler=....

This will only allow serial execution, of course. Like with most scripts in the SWMF/BATSRUS, type

./Config.pl -help

for a comprehensive description of options and examples.

The ifort compiler (and possibly others too) use the stack for temporary arrays, so the stack size should be large. For csh/tcsh add the following to .cshrc:

unlimit stacksize

For bash/ksh/zsh add the following to .bashrc or equivalent initialization file:

ulimit -s unlimited

Please note that creating the PDF manuals requires that LaTeX (available through the command line) is installed on your system.

To create the PDF manuals for BATSRUS and CRASH type

make PDF
cd util/CRASH/doc/Tex; make PDF

in the BATSRUS directory. The manuals will be in the Doc/ and util/CRASH/doc/ directories, and can be accessed by opening Doc/index.html and util/CRASH/doc/index.html. Note that the CRASH application is only usable in the full SWMFsoftware version.

The input parameters of BATSRUS/CRASH are described in the PARAM.XML in the main directory. This is the best source of information when constructing the input parameter file and it is used to generate the "Input Parameters" section of the manual.

cd Doc/Tex
make clean

To remove all the created documentation type

cd Doc/Tex
make cleanpdf

As for most Makefile-s in the SWMF/BATSRUS, type

make help

for a comprehensive list of make targets and examples.

All manuals can be accessed by opening the top index file

open Doc/index.html

You may also read the PDF files directly with a PDF reader. The most important document is the user manual in

Doc/USERMANUAL.pdf

You can try running the standard test suite by typing

make -j test

in the main directory. The -j flag allows parallel compilation. This requires a machine where mpiexec is available. The tests run with 2 MPI processors and 2 threads by default. Successful passing of the test is indicated by empty *.diff files.

To run the tests on more (up to 8) cores use

make -j test NP=4

You can also run an individual test. The list of available SWMF tests can be listed with

make test_help

For example, to run test_shocktube in a serial mode (without MPI) but multithreaded with 4 threads (using OpenMP):

make -j test_shocktube MPIRUN= NTHREAD=4