FEniCS build recipes for TU Chemnitz

Building FEniCS

0. Login to tyche.mathematik.tu-chemnitz.de.

1. Set FENICS_PREFIX in fenics.conf as desired.

2. Run build.sh to build. Alternatively you can do:

   nohup ./build.sh > build.log 2>&1 < /dev/null &
   

   to prevent the build being killed when terminal hangs up (by timeout or closing the SSH session); watch the build progress from any terminal by tail -f build.log.

3. To test the build run:

   python3 -m pip install --user pytest
   
   source fenics.conf
   
   # Run unit tests sequentially
   cd "${FENICS_PREFIX}/src/dolfin/python/test/unit"
   python3 -mpytest
   
   # Run unit tests in parallel
   cd "${FENICS_PREFIX}/src/dolfin/python/test/unit"
   XFAILS_IN_PARALLEL="test_tao_linear_bound_solver"  # failing tests!?!
   mpirun -n 3 python3 -mpytest -k "not ${XFAILS_IN_PARALLEL}"
   
   # Test interactive plotting with Matplotlib
   cd "${FENICS_PREFIX}/src/dolfin/python/demo"
   python3 generate-demo-files.py
   cd documented/poisson
   python3 demo_poisson.py
   mpirun -n 3 python3 demo_poisson.py
   

4. You might want to add environment variable export DIJITSO_CACHE_DIR=... in fenics.conf. If not set, the default is ~/.cache/dijitso.

5. Install the conf script and clean the sources:

   cp fenics.conf "${FENICS_PREFIX}"
   rm -rf "${FENICS_PREFIX}/src"
   

Using FEniCS

source fenics.conf to use.