[PYTHON] Install JModelica on Ubuntu

What is J Modelica

According to the user guide

• Perform complex physics simulations in different fields under the modeling language Modelica
• Supports Optimica extensions and can handle optimization problems
• Compiler build frame Uses a JastAdd-based compiler
• User interface is Python
• Supports FMI (Function Mock-up Interface) Exchange Moldel, Co-simulation

To put it simply

• Models in Modelica language can be compiled as FMUs (Function Mock-up Units)
• FMUs can be imported and calculated

Basic information of JModelica

• 1… The runtime library is CPL v1.0 (FMUs compiled with JModelica are CPL v1.0 compliant)

Installation

Just follow the basic user guide (round throw) Windows http://www.jmodelica.org/page/27667 Ubuntu 12.04 http://www.jmodelica.org/page/27667 Ubuntu 15.04 http://www.jmodelica.org/27663

For those who like Ubuntu but now it's 2016 and Anaconda is good Below, we explain the installation of Anaconda, JModelica on Ubuntu 16.04.

Prepare the Anaconda environment

Prepare a virtual environment with Anaconda. First, install pyenv

bash

git clone https://github.com/yyuu/pyenv.git ~/.pyenv
echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc
echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(pyenv init -)"' >> ~/.bashrc
source ~/.bashrc

Next, install Anaconda and create a virtual environment named cae.

bash

wget -P $(pyenv root)/cache https://repo.continuum.io/archive/Anaconda2-4.1.0-Linux-x86_64.sh
pyenv install anaconda2-4.1.0
pyenv global anaconda2-4.1.0
pyenv rehash
conda update -y conda

Normally, the first line above should be unnecessary. When curl is annoying with an error in the TLS encryption size in `pyenv install` First download with wget and then install.

Preparation for installing JModelica on Ubuntu 16.04 (64bit)

Installation of required packages

Install the packages required by JModelica on Ubuntu 16.04. Enter the following at the terminal

bash

sudo apt install -y g++ subversion gfortran cmake swig ant openjdk-8-jdk  zlib1g-dev libboost-dev automake autoconf pkg-config

Install the required Python packages

Install the Python package required by JModelica in the Python environment created earlier. Install jpype and jcc from Anaconda Cloud.

bash

conda install -y anaconda
conda install -y -c omnia jpype1=0.6.0
conda install -y -c ssc jcc=2.21

<!--

Before installing Ipopt

installation of paco

Install paco to manage stray builds. Skip this page if you don't manage packages

bash

sudo apt-get install paco

When you do sudo make install` `` in / usr / local etc., you can enter `` `sudo paco -lp" package name "" make install " Can be managed with paco.

bash example

#Installation of stray packages(If you need sudo)
sudo paco -lp "package name" "make install"
#Packages managed by paco
paco -a
#Installed files
paco -f "package name"
#Uninstall
paco -r "package name"

-->

Install Ipopt

It seems that it is provided as an Ubuntu package, Is there a flaw in the package around Ubuntu 12.04? It seems that it didn't work well. Again compile from source. Change the prefix at the time of configure in your own environment.

bash

mkdir ~/Ipopt
cd ~/Ipopt
wget http://www.coin-or.org/download/source/Ipopt/Ipopt-3.12.6.tgz
tar xzf Ipopt-3.12.6.tgz
cd Ipopt-3.12.6/ThirdParty/Blas
./get.Blas
cd ../Lapack
./get.Lapack
cd ../Mumps
./get.Mumps
cd ../Metis
./get.Metis
cd ../../
mkdir build
cd build
../configure --prefix=/home/ubuntu/Ipopt
make
make install

Install J Modelica on Ubuntu 16.04 (64bit)

Change the prefix and with-ipopt paths when configuring in your own environment According to the configure file, there is an environment variable for PYTHON_HOME Note that PYTHON_INCLUDE and PYTHON_LIB are set to paths that do not match the Anaconda environment.

bash

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export LD_LIBRARY_PATH=$JAVA_HOME/jre/lib/amd64:$JAVA_HOME/jre/lib/amd64/server
export PYTHON_INCLUDE=/home/ubuntu/.pyenv/versions/anaconda2-4.1.0/include/python2.7
export PYTHON_LIB=/home/ubuntu/.pyenv/versions/anaconda2-4.1.0/lib/libpython2.7.so

mkdir -p ~/JModelica
cd ~/JModelica
svn co https://svn.jmodelica.org/trunk JModelica.org
cd JModelica.org
mkdir build
cd build
../configure --prefix=/home/ubuntu/JModelica --with-ipopt=/home/ubuntu/Ipopt
make
make install
make casadi_interface

Operation test

Start ipython with the path required to use JModelica

bash

/home/ubuntu/JModelica/bin/jm_ipython.sh

X environment is required for plot display. After that, operation test in ipython terminal.

Test 1

ipython

from pyjmi.examples import VDP_sim
VDP_sim.run_demo()

result

What did you calculate?

Test 2

ipython

from pyjmi.examples import cstr
cstr.run_demo()

result

It looks like you're optimizing something.

Test 3

ipython

from pyjmi.examples import cstr_casadi
cstr_casadi.run_demo()

result

RuntimeError: The assertion "handle!=0" on line 171 of file "/home/ubuntu/JModelica/JModelica.org/ThirdParty/CasADi/CasADi/casadi/core/function/plugin_interface.hpp" failed. 
PluginInterface::loadPlugin: Cannot load shared library:
  Tried libcasadi_nlpsolver_ipopt.so:
    Error code: libcasadi_nlpsolver_ipopt.so: cannot open shared object file: No such file or directory
  Tried /home/ubuntu/JModelica/ThirdParty/CasADi/lib/libcasadi_nlpsolver_ipopt.so:
    Error code: /home/ubuntu/JModelica/ThirdParty/CasADi/lib/libcasadi_nlpsolver_ipopt.so: cannot open shared object file: No such file or directory

Certainly there is no libcasadi_nlpsolver_ipopt.so. Well?

Bonus
Enable JModelica with jupyter notebook

An example is shown when the installation path of JModelica is / home / ubuntu / JModelica. Change the installation path part according to your environment

bash

sed 's/ipython/jupyter notebook --no-browser/g' /home/ubuntu/JModelica/bin/jm_ipython.sh >/home/ubuntu/JModelica/bin/jm_jupyter_notebook.sh
chmod +x /home/ubuntu/JModelica/bin/jm_jupyter_notebook.sh

Start jupyter notebook.

bash

/home/ubuntu/JModelica/bin/jm_jupyter_notebook.sh

Launch your browser and go to http: // localhost: 8888 /.