.. _RST Requirements:

Requirements
*********************************************************

To be able to use Meso-NH, WW3 and OASIS coupling's developments you need to have the following requirements :

+--------------------+-----------------+
| .. centered:: Hardware               |
+====================+=================+
| Operating System   | Linux           |
+--------------------+-----------------+
| Disk space         | 10 Go minimum   |
+--------------------+-----------------+
| Processor          | 4 cores minimum |
+--------------------+-----------------+

+--------------------+---------------------+
| .. centered:: Software                   |
+====================+=====================+
| Compiler           | gfortran or ifort   |
+--------------------+---------------------+
| Parallel library   | MPI                 |
+--------------------+---------------------+
| | Python3          | | os, glob          |
| |                  | | netCDF4           |
| |                  | | numpy             |
| |                  | | matplotlib        |
+--------------------+---------------------+

This documentation has been tested with following python's environment :

.. code-block:: yaml

   name: env_cpl_mnhww3croco
   channels:
     - defaults
   dependencies:
     - python=3.11.5
     - numpy=1.26.0
     - netcdf4=1.6.2
     - matplotlib=3.7.2

.. note::

   You can copy/paste these lines in a file called env_cpl_mnhww3croco.yml.

To install it with :command:`conda`, do

.. code-block:: bash
   
   conda env create -f env_cpl_mnhww3croco.yml

.. note::

   Insallation of python's environment has to be done one time.

.. tip::

   To accelerate the installation of your conda's environment you can use mamba, example :
   
.. code-block:: bash
   
   mamba env create -f env_cpl_mnhww3croco.yml

To activate it, do

.. code-block:: bash

   conda activate env_cpl_mnhww3croco
   
To deactivate it, do

.. code-block:: bash

   conda deactivate