FreeFem++ with PETSc parallisation

New development on FreeFem++ using PETSc and SLEPc libraries, full mpi(!!!) is available even for eigen value problem.

For use of PETSc and SLEPc, you need to compile with source code.

https://doc.freefem.org/introduction/installation.html#compiling-source-code

Server 3 has already installed version. If you want to try, go to server 3 and instead of hiting Freefem++ do

mpirun -np [no.prc] /home/yim/FreeFem-sources/src/mpi/FreeFem++-mpi mycode.edp

FreeFem++ in fidis - linking problem with PETSc library

Basically, you can install your own Freefem++ in fidis $HOME

The steps are similar to compilation in Ubuntu in the link above, but some enviromnental variables should be loaded.

1. Download Freefem++

NOTE: I was recommanded to use developer version it can be found their Freefem git branches or download here..

2. Load module for intel compilers

module load cmake/3.14.4 autoconf/2.69 m4/1.4.18 automake/1.16.1 intel/18.0.5 intel-mpi/2018.4.274 intel-mkl/2018.5.274

export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${INTEL_ROOT}/compiler/lib/intel64

3. Follow this

mkdir ./FreeFem-install-dev/

cd FreeFem-sources-dev

autoreconf -i

./configure --enable-download --enable-optim --prefix=$HOME/FreeFem-install-dev --with-mkl=/ssoft/spack/external/intel/2018.4/compilers_and_libraries_2018.5.274/linux/mkl/lib/intel64

./3rdparty/getall -a

cd 3rdparty/ff-petsc

make petsc-slepc

cd -

./reconfigure MPIRUN=mpiexec

make -j4

please visit also my discussion with prj... https://community.freefem.org/t/freefem-petsc-configuration-problem-in-linux/542/27

Example of base.sh

#!/bin/bash
#SBATCH --nodes 1
#SBATCH --ntasks 2
#SBATCH --cpus-per-task 1
#SBATCH --ntasks-per-node 2
#SBATCH --time 00:05:00
#SBATCH --chdir /home/yim/FreeFem-sources/examples/hpddm/
#SBATCH --partition=parallel
#SBATCH --mem 2000
#SBATCH --mail-user=eunok.yim@epfl.ch
#SBATCH --mail-type=ALL
#SBATCH --job-name=fff
#SBATCH -A lfmi

echo $1 > SESSION.NAME
echo `pwd`'/' >> SESSION.NAME

module add intel/18.0.5 intel-mpi/2018.4.274 intel-mkl/2018.5.274
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${INTEL_ROOT}/compiler/lib/intel64

dirff=/home/yim/FreeFem-sources/src/mpi/FreeFem++-mpi

srun $dirff stokes-io-3d.edp