Difference between revisions of "GetDDM"
From ONELAB
| Line 23: | Line 23: | ||
* Configure and build PETSc. The configuration options depend on the calculations you want to perform (complex- or real-valued), as well as your compiler/MPI setup. Make sure that '''mpicc''', '''mpicxx''' and '''mpif90''' are in your path. Then run (remove <code>--with-scalar-type=complex</code> to build in real arithmetic): | * Configure and build PETSc. The configuration options depend on the calculations you want to perform (complex- or real-valued), as well as your compiler/MPI setup. Make sure that '''mpicc''', '''mpicxx''' and '''mpif90''' are in your path. Then run (remove <code>--with-scalar-type=complex</code> to build in real arithmetic): | ||
| − | < | + | <source> |
cd petsc-3.4.4 | cd petsc-3.4.4 | ||
export PETSC_DIR=$PWD | export PETSC_DIR=$PWD | ||
| Line 30: | Line 30: | ||
make | make | ||
cd .. | cd .. | ||
| − | </ | + | </source> |
* Download and unzip the Gmsh and the GetDP source code from the ONELAB bundle http://onelab.info/files/gmsh-getdp-source.zip | * Download and unzip the Gmsh and the GetDP source code from the ONELAB bundle http://onelab.info/files/gmsh-getdp-source.zip | ||
* Configure, compile and install a minimal Gmsh library (it will be used by GetDP): | * Configure, compile and install a minimal Gmsh library (it will be used by GetDP): | ||
| − | < | + | <source> |
cd gmsh-xxx | cd gmsh-xxx | ||
mkdir lib | mkdir lib | ||
| Line 43: | Line 43: | ||
sudo make install/fast | sudo make install/fast | ||
cd ../.. | cd ../.. | ||
| − | </ | + | </source> |
* Configure and compile the MPI version of GetDP (change CC, CXX and FC depending on your MPI installation): | * Configure and compile the MPI version of GetDP (change CC, CXX and FC depending on your MPI installation): | ||
| − | < | + | <source> |
cd getdp-xxx | cd getdp-xxx | ||
mkdir bin | mkdir bin | ||
| Line 53: | Line 53: | ||
make | make | ||
cd ../.. | cd ../.. | ||
| − | </ | + | </source> |
* [''Optional - only for parallel mesh generation''] Configure and compile the MPI version of Gmsh (need to disable Metis due to version clash with PETSc): | * [''Optional - only for parallel mesh generation''] Configure and compile the MPI version of Gmsh (need to disable Metis due to version clash with PETSc): | ||
| − | < | + | <source> |
cd gmsh | cd gmsh | ||
mkdir bin | mkdir bin | ||
| Line 62: | Line 62: | ||
cmake -DENABLE_MPI=1 -DENABLE_METIS=0 .. | cmake -DENABLE_MPI=1 -DENABLE_METIS=0 .. | ||
make | make | ||
| − | </ | + | </source> |
== Parallel runs == | == Parallel runs == | ||
The commands for running GetDDM in parallel will depend on your particular MPI setup. Basically, the procedure would look something like this on 100 CPUs: | The commands for running GetDDM in parallel will depend on your particular MPI setup. Basically, the procedure would look something like this on 100 CPUs: | ||
| − | < | + | <source> |
mpirun -np 100 gmsh file.geo - | mpirun -np 100 gmsh file.geo - | ||
mpirun -np 100 getdp file.pro -solve DDM | mpirun -np 100 getdp file.pro -solve DDM | ||
| − | </ | + | </source> |
Sample scripts for SLURM and PBS schedulers are available: | Sample scripts for SLURM and PBS schedulers are available: | ||
Revision as of 19:05, 6 November 2016
GetDDM combines GetDP and Gmsh to solve large scale finite element problems using optimized Schwarz domain decomposition methods.
Examples
Precompiled binaries
For demonstration purposes, download the serial pre-compiled ONELAB bundle for Windows64, Windows32, Linux64, Linux32 or MacOSX. With these precompiled binaries the examples will run in sequential mode. For parallel computations you need to recompile the codes from source with MPI support (see below).
Parallel version build
For parallel computations you need to compile GetDP and Gmsh with MPI support.
- Install MPI, CMake and Subversion.
- Download PETSc from http://www.mcs.anl.gov/petsc/petsc-as/download/. PETSc 3.4 and 3.5 have both been tested.
- Uncompress the PETSc archive (in this example, using PETSc 3.4.4):
tar zxvf petsc-3.4.4.tar.gz
- Configure and build PETSc. The configuration options depend on the calculations you want to perform (complex- or real-valued), as well as your compiler/MPI setup. Make sure that mpicc, mpicxx and mpif90 are in your path. Then run (remove
--with-scalar-type=complexto build in real arithmetic):
cd petsc-3.4.4 export PETSC_DIR=$PWD export PETSC_ARCH=mpi_mumps_complex ./configure --with-debugging=0 --with-clanguage=cxx --with-shared-libraries=0 --with-x=0 --download-mumps=1 --download-metis=1 --download-parmetis=1 --download-scalapack=1 --download-blacs=1 --with-scalar-type=complex make cd ..
- Download and unzip the Gmsh and the GetDP source code from the ONELAB bundle http://onelab.info/files/gmsh-getdp-source.zip
- Configure, compile and install a minimal Gmsh library (it will be used by GetDP):
cd gmsh-xxx mkdir lib cd lib cmake -DDEFAULT=0 -DENABLE_PARSER=1 -DENABLE_POST=1 -DENABLE_BUILD_LIB=1 .. make lib sudo make install/fast cd ../..
- Configure and compile the MPI version of GetDP (change CC, CXX and FC depending on your MPI installation):
cd getdp-xxx mkdir bin cd bin cmake -DENABLE_MPI=1 .. make cd ../..
- [Optional - only for parallel mesh generation] Configure and compile the MPI version of Gmsh (need to disable Metis due to version clash with PETSc):
cd gmsh mkdir bin cd bin cmake -DENABLE_MPI=1 -DENABLE_METIS=0 .. make
Parallel runs
The commands for running GetDDM in parallel will depend on your particular MPI setup. Basically, the procedure would look something like this on 100 CPUs:
mpirun -np 100 gmsh file.geo - mpirun -np 100 getdp file.pro -solve DDM
Sample scripts for SLURM and PBS schedulers are available: [1], [2].
References
- C. Geuzaine, B. Thierry, N. Marsic, D. Colignon, A. Vion, S. Tournier, Y. Boubendir, M. El Bouajaji, and X. Antoine. An Open Source Domain Decomposition Solver for Time-Harmonic Electromagnetic Wave Problems. 2014 IEEE International Conference on Antenna Measurements & Applications. November 16-19, Antibes Juan-les-Pins, France.
- B. Thierry, A.Vion, S. Tournier, M. El Bouajaji, D. Colignon, N. Marsic, X. Antoine, C. Geuzaine. GetDDM: an Open Framework for Testing Optimized Schwarz Methods for Time-Harmonic Wave Problems. 2015.
