README.md

FMS Examples

PUMI + MFEM demo

The demo performs the following steps:

• loads a PUMI mesh
• converts the PUMI mesh object to an FMS mesh object
• converts the FMS mesh object to an MFEM mesh object
• sends the MFEM mesh object to GLVis for visualization.

To build the demo, first clone and build the PUMI and MFEM repositories, e.g. next to the FMS directory:

git clone https://github.com/SCOREC/core.git pumi
git clone https://github.com/mfem/mfem.git
cd pumi
mkdir build
cd build
cmake .. -DCMAKE_C_COMPILER=mpicc -DCMAKE_CXX_COMPILER=mpicxx \
  -DSCOREC_CXX_WARNINGS=OFF -DCMAKE_INSTALL_PREFIX=../../pumi-install
make -j 4 install
cd ../..
cd mfem
mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=../../mfem-install
make -j 4 install
cd ../..

Next, fetch the MFEM data repository used by the demo:

cd fms
git clone https://github.com/mfem/data.git

And finally, build FMS and the demo:

mkdir build
cd build
cmake .. -DFMS_ENABLE_DEMO=ON -DMPICXX=mpicxx \
  -DPUMI_DIR=$(pwd)/../../pumi-install -DMFEM_DIR=$(pwd)/../../mfem-install
make
cd examples/demo_pumi_mfem 
./demo_pumi_mfem

The last step in the demo will send the mesh to GLVis for visualization, if a GLVis server is running. GLVis can be cloned and built using the following commands, e.g. next to the FMS, PUMI, and MFEM directories (see the glvis/INSTALL file for additional required libraries):

git clone https://github.com/GLVis/glvis.git
cd glvis
mkdir build
cd build
cmake .. -DMFEM_DIR=../../mfem-install
make -j 4

To start GLVis in server mode use:

./glvis