3. Installation on Linux systems

This section describes a procedure for compiling JModelica.org from sources on Linux. The instructions have been verified to work on Ubuntu Linux release 12.04, 64bit.

3.1. Prerequisites

3.1.1. Installing pre-compiled packages

It is convenient to use a package management system, if available, of the Linux distribution to install the prerequisites. On Ubuntu systems, the apt-get command line program may be used:

sudo apt-get -y install g++
sudo apt-get -y install subversion
sudo apt-get -y install gfortran
sudo apt-get -y install ipython
sudo apt-get -y install cmake
sudo apt-get -y install swig
sudo apt-get -y install ant
sudo apt-get -y install openjdk-6-jdk
sudo apt-get -y install python-dev
sudo apt-get -y install python-numpy
sudo apt-get -y install python-scipy
sudo apt-get -y install python-matplotlib
sudo apt-get -y install cython
sudo apt-get -y install python-lxml
sudo apt-get -y install python-nose
sudo apt-get -y install python-jpype
sudo apt-get -y install zlib1g-dev
sudo apt-get -y install libboost-dev

On Ubuntu 12.04, the bundled jcc version is too old. A new enough version can be installed using pip:

sudo apt-get -y install python-pip
sudo pip install jcc

The following versions of each package have been tested and verified to work. Please note that in some cases, a minimum version is required.

Table 2.1. Package versions for Ubuntu

g++4.6.3Tested version
subversion1.6.17Tested version
gfortran4.6.3Tested version
ipython0.12.1Tested version
cmake2.8.6Minimum version
swig2.0.4Tested version
ant1.8.2Tested version
python-dev2.7.3Tested version
python-numpy1.6.1Tested version
python-scipy0.9.0Tested version
python-matplotlib1.1.1Tested version
cython0.15Minimum version
python-lxml2.3.2Tested version
python-nose1.1.2Tested version
python-jpype0.5.4.2Tested version
zlib1g-dev1: version
libboost-dev1.48.0.2Tested version
jcc2.16Minimum version

3.1.2. Compiling Ipopt

While Ipopt is available as a pre-compiled package for Ubuntu, it is recommended to build Ipopt from sources. The Ipopt packages provided for Ubuntu have had flaws (including the version provided for Ubuntu 12.04) that prevented usage with JModelica.org. Also, compiling Ipopt from sources is required when using the linear solvers MA27 or MA57 from the HSL library, since these are not available as open source software.

First, download the Ipopt sources from https://projects.coin-or.org/Ipopt and unpack the content:

tar xvf Ipopt-3.10.2.tgz

Then, retrieve the third party dependencies:

cd Ipopt-3.10.2/ThirdParty/Blas
cd ../Lapack
cd ../Mumps
cd ../Metis
cd ../../

If you have access to the HSL codes MA57 or MA27, copy their sources into the directory ThirdParty/HSL. In the next step, configure and compile Ipopt:

mkdir build
cd build
../configure --prefix=/home/<user_name>/<ipopt_installation_location>
make install

where <user_name> and <ipopt_installation_location> are replaced by the user directory and the installation directory of choice for Ipopt.

3.1.3. Installing JModelica.org with WORHP (optional)

As an alternative to IPOPT for optimization, the CasADi framework in JModelica.org also has support for the solver WORHP. Note that WORHP is closed source, but offers free personal academic licenses. To compile JModelica.org with support for WORHP, first obtain the WORHP binaries and a license file from http://www.worhp.de. Set the environment variables $WORHP to your directory containing the binaries and $WORHP_LICENSE_FILE to your license file.

Normally, this would be sufficient, but for now the following additional measures are needed. Find the following six lines in $JMODELICA_SRC/ThirdParty/CasADi/CasADi/interface/worhp/worhp_internal.cpp and remove them:

addOption("CutLength",OT_REAL,worhp_p_.CutLength,"Scaling factor for Cut recovery strategy");
addOption("Ma57PivotThresh",OT_REAL,worhp_p_.Ma57PivotThresh,"Pivoting tolerance for MA57 = CNTL(1)");
if (hasSetOption("CutLength")) worhp_p_.CutLength = getOption("CutLength");
if (hasSetOption("Ma57PivotThresh")) worhp_p_.Ma57PivotThresh = getOption("Ma57PivotThresh");

Find the line

option(WITH_WORHP "Compile the WORHP interface" OFF)

in $JMODELICA_SRC/ThirdParty/CasADi/CasADi/CMakeLists.txt and change OFF to ON.

3.2. Compiling

Make sure that all prerequisites are installed before compiling the JModelica.org platform. First, check out the JModelica.org sources:

svn co https://svn.jmodelica.org/trunk JModelica.org

Then configure and build JModelica.org:

cd JModelica.org
mkdir build
cd build
../configure --prefix=/home/<user_name>/<jmodelica_install_location> \
make install
make casadi_interface

where <user_name> and <jmodelica_installation_location> are replaced by the user directory and the installation directory of choice for JModelica.org.

3.3. Testing JModelica.org

In order to verify that JModelica.org has been installed correctly, start an IPython shell using the command /home/<user_name>/<jmodelica_install_location>/bin/jm_ipython and run a few examples:

# Import and run the VDP_sim example and plot results
from pyjmi.examples import VDP_sim

# Import and run the CSTR example and plot results
from pyjmi.examples import cstr

# Import and run the CSTR example using CasADi and plot results
from pyjmi.examples import cstr_casadi