add installation guide

Author: jmorice91

HOWTO_INSTALL_PDI.md

@@ -0,0 +1,77 @@
+This tutorial will be done the version 1.*.** of PDI
+
+# installation
+
+Create a directory for this tutorial
+
+## spack install or docker:
+
+## install from source:
+
+prerequies:
+- C/C++ compiler (tested with gcc and clang)
+- cmake
+- mpi (tested with openmpi and mpich)
+- A version of python 3 with numpy, matplotlib and pybind11 $^{*}$
+- hdf5 $^{*}$
+- deisa $^{*}$
+- The other prerequies can be obtained at the compilation of pdi.
+
+### how to set pyton environement with venv
+
+
+```bash
+python3 -m venv env_python_tuto_pdi
+source env_python_tutu_pdi/bin/activate
+python3 -m pip install --upgrade pip 
+python3 -m pip install numpy matplotlib 
+```
+
+### how to install pdi
+
+```bash
+git clone https://github.com/pdidev/pdi
+git switch v1.*.*
+```
+
+```bash
+cd pdi
+mkdir install
+mkdir build
+cd build
+```
+
+```bash
+cmake \
+-DCMAKE_INSTALL_PREFIX=../install
+-DBUILD_MPI_PLUGIN \
+-DBUILD_DECL_HDF5_PLUGIN=ON -DBUILD_HDF5_PARALLEL=ON -DUSE_HDF5=EMBEDDED \
+-DBUILD_PYTHON=ON -DBUILD_PYCALL=EMBEDDED -DUSE_pybind11=EMBEDDED \
+-DBUILD_USER_CODE_PLUGIN=ON \
+-DUSE_spdlog=EMBEDDED \
+-DUSE_yaml=EMBEDDED \
+-DUSE_paraconf=EMBEDDED \
+..
+```
+
+source the environement of pdi:
+* with a bash script
+```bash
+cd ../..
+source ./pdi/install/share/pdi/env.bash
+```
+* with a zsh script (default script on MAC OSX)
+```bash
+cd ../..
+source ./pdi/install/share/pdi/env.zsh
+```
+
+An installation script of pdi, 
+
+### checking your environnement
+
+A script to check your environnement is given here.
+
+```bash
+A completer.
+```