updated documentation

docs/install/pip.rst

@@ -37,7 +37,8 @@ DeepHyper supports distributed computation with different backends. ``MPI`` demo
     $ pip install "deephyper[mpi]" # Install MPI features for MPICommEvaluator.
     $ pip install "deephyper[ray]" # Install Ray features for RayEvaluator.
     $ pip install "deephyper[redis]" # Install Redis Client for RedisStorage with Distributed Search.
+    $ pip install "deephyper[redis-hiredis]" # Install Redis with Hiredis for better performance.
 
-For ``Redis`` we advice to follow the `Redis official installation guide <https://redis.io/topics/quickstart>`_ to install the client/server features. Then, the ``RedisJson`` also needs to be installed by following the `Redis JSON official installation guide <https://redis.io/docs/stack/json/>`_.
+For ``Redis`` we advice to follow the `Redis official installation guide <https://redis.io/topics/quickstart>`_ to install the client/server features. Then, the ``RedisJson`` also needs to be installed by following the `Redis JSON official installation guide <https://redis.io/docs/stack/json/>`_. To make the installation easier we provide a Spack package ``redisjson`` for which installation instruction are detailed at :ref:`Redis Server Install`.
 
 For ``MPI`` we advice to follow the `MPI official installation guide <https://www.open-mpi.org/faq/?category=building>`_ to install the client/server features. But, in many centers an ``MPI`` installation will already be provided or it can also be installed through a package manager (e.g., ``apt`` or ``brew``).

docs/install/spack.rst

@@ -1,8 +1,7 @@
 Spack
 *****
 
-`Spack <https://spack.readthedocs.io/en/latest/>`_ is a package management tool designed to support multiple versions and configurations of software on a wide variety of platforms and environments.
-
+`Spack <https://spack.readthedocs.io/en/latest/>`_ is a package management tool designed to support multiple versions and configurations of software on a wide variety of platforms and environments. We use Spack to build from source some dependencies of DeepHyper.
 
 Start by installing Spack on your system. The following command will install Spack in the current directory:
 
@@ -11,25 +10,48 @@ Start by installing Spack on your system. The following command will install Spa
     $ git clone -c feature.manyFiles=true https://github.com/spack/spack.git
     $ . ./spack/share/spack/setup-env.sh
 
-Download the deephyper Spack package repository:
+
+.. _Redis Server Install:
+
+Redis Server & RedisJSON
+========================
+
+Create a Spack environment where the redis-server will be installed:
+
+.. code-block:: console
+
+    $ spack env create redisjson
+    $ spack env activate redisjson
+
+Download the deephyper Spack package repository and add it to the environment:
 
 .. code-block:: console
 
     $ git clone https://github.com/deephyper/deephyper-spack-packages.git
     $ spack repo add deephyper-spack-packages
 
-Create a new environment for DeepHyper:
+Then, add the ``redisjson`` Spack package to the environment:
 
 .. code-block:: console
 
-    $ spack env create deephyper
-    $ spack env activate deephyper
+    $ spack add redisjson
+
+Finally, install:
 
 .. code-block:: console
+    
+    $ spack install
 
-    $ spack install py-deephyper
-    $ spack load py-deephyper
+Now that the Redis server is installed and the RedisJSON pluging is compiled you can start the Redis server using the appropriate ``redis.conf``. The following commands will create a ``redis.conf`` file which configures the server to listen on all interfaces, and also load the RedisJSON plugin:
+
+.. code-block:: console
 
-.. warning::
+    $ touch redis.conf
+    $ echo "bind 0.0.0.0" >> redis.conf
+    $ cat $(spack find --path redisjson | grep -o "/.*/redisjson.*")/redis.conf >> redis.conf
+
+Finally, start the Redis server:
+
+.. code-block:: console
 
-    The Spack installation will only provide the default DeepHyper installation (i.e., hyperparameter optimization). All features will not be included by default.
+    $ redis-server redis.conf