diff --git a/docs/source_docs/references/hpc.rst b/docs/source_docs/references/hpc.rst
index 2fc47c7a4f3b32752514e84460b8f71be79d8704..dc52b4d8032608b07605bd33f1f0bfa93ecdb73f 100644
--- a/docs/source_docs/references/hpc.rst
+++ b/docs/source_docs/references/hpc.rst
@@ -30,4 +30,5 @@ Follow the guide here instead of the generic instructions.
    :maxdepth: 0
 
    hpc/Joule2
+   hpc/Joule3
 
diff --git a/docs/source_docs/references/hpc/Joule3.rst b/docs/source_docs/references/hpc/Joule3.rst
new file mode 100644
index 0000000000000000000000000000000000000000..2a9d350ec9c4fa43a078a7dcd4e468052a9daca6
--- /dev/null
+++ b/docs/source_docs/references/hpc/Joule3.rst
@@ -0,0 +1,394 @@
+Joule 3.0
+==========
+
+Congratulations on getting the access to Joule3.0. You have accomplished
+the first step to use the platform for exascale computing. 
+Follow these notes to build MFIX-Exa code:
+
+Source code
+-----------
+   
+Request access and download the source code following the instructions on the 
+`MFIX-Exa website. <https://mfix.netl.doe.gov/products/mfix-exa/download/>`_
+
+Essentials
+----------
+   
+The code require some essential modules such as cmake, gnu, openmpi and cuda
+which are readily available on Joule3.0. Use the following set of commands to load in your environment:
+
+.. code:: bash
+
+   module purge
+   module load cmake/3.29.3
+   module load gnu/13.2.0
+   module load openmpi/4.1.5/gnu/13.2.0
+   module load cuda/12.4          # If you want the code to be GPU compatible
+
+Important NOTES:
+---------------- 
+
+- Installation of all dependencies and code is tested with the version of modules shown above.
+- We are using 8 cores using '-j8' for all make commands. User can change the number of cores based on the core availability on the login node.
+- The following instructions of installation are not test for GPU compatibility, and would require modifications.
+
+Dependencies
+------------
+
+Dependencies are only required to be installed once on Joule3.0. If already installed, skip to the next section.
+
+You need to set certain environment variables before building the dependencies. 
+
+.. code:: bash
+
+   export CC=$(which mpicc)
+   export CXX=$(which mpic++)
+   export F77=$(which mpif77)
+   export FC=$(which mpifort)
+   export F90=$(which mpif90)
+
+You should create a 'dep_installed' directory for the compiled packages and a 'dep_source_code' for the source code of each package to keep everything organized, it is optional but recommended. You only need to copy-paste-execute most of the instructions given below, except replacing few path marked as 'CHANGE_HERE'
+
+.. code:: bash
+
+   export DEP_SOURCE_DIR=$HOME/<path/to/dependencies>/dep_source_code       # CHANGE_HERE
+   export DEP_INSTALL_DIR=$HOME/<path/to/dependencies>/dep_installed        # CHANGE_HERE
+   export MFIX_SOURCE_DIR=$HOME/<path/to/source/dir>                         # CHANGE_HERE 
+   export MFIX_BUILD_DIR=$HOME/<path/to/build/dir>                           # CHANGE_HERE
+
+   cd $DEP_SOURCE_DIR
+
+#. HYPRE
+
+      .. code:: bash
+
+         git clone https://github.com/hypre-space/hypre.git
+         pushd hypre/src/
+         git checkout v2.26.0
+
+         export HYPRE_INSTALL_DIR=$DEP_INSTALL_DIR/HYPRE/2_26_0
+
+         ./configure --prefix=$HYPRE_INSTALL_DIR --with-MPI
+         make -j8 install
+
+         popd
+
+#. CATCH2
+
+      .. code:: bash
+
+         git clone --depth 1 --branch v2.13.7 https://github.com/catchorg/Catch2
+         pushd Catch2/
+
+         export CATCH2_INSTALL_DIR=$DEP_INSTALL_DIR/Catch2/2_13_7
+
+         cmake -S . -B build -DCMAKE_INSTALL_PREFIX=$CATCH2_INSTALL_DIR
+         cd build
+         make -j8 install
+         
+         popd
+
+
+#. GMP
+
+      .. code:: bash
+
+         wget --no-check-certificate https://ftp.gnu.org/gnu/gmp/gmp-6.2.1.tar.xz
+         tar -xf gmp-6.2.1.tar.xz
+         pushd gmp-6.2.1
+         
+         export GMP_INSTALL_DIR=$DEP_INSTALL_DIR/gmp/6_2_1
+         
+         ./configure --prefix=$GMP_INSTALL_DIR
+         make -j8 install
+         
+         popd
+
+
+#. MPFR
+
+      .. code:: bash
+
+         wget --no-check-certificate https://ftp.gnu.org/gnu/mpfr/mpfr-4.1.0.tar.xz
+         tar -xf mpfr-4.1.0.tar.xz
+         pushd mpfr-4.1.0/
+         
+         export MPFR_INSTALL_DIR=$DEP_INSTALL_DIR/mpfr/4_1_0
+         
+         ./configure --with-gmp=$GMP_INSTALL_DIR --prefix=$MPFR_INSTALL_DIR
+         make -j8 install
+         
+         popd
+
+#. CGAL
+
+      .. code:: bash
+
+         git clone --depth 1 --branch v5.3 https://github.com/CGAL/cgal
+         pushd cgal/
+         
+         export CGAL_INSTALL_DIR=$DEP_INSTALL_DIR/cgal/5_3_0
+         
+         cmake -S . -B build -DCMAKE_INSTALL_PREFIX=$CGAL_INSTALL_DIR
+         cd build/
+         make -j8 install
+         
+         popd
+
+#. PEGTL
+
+      .. code:: bash
+
+         git clone --branch 3.2.2 https://github.com/taocpp/pegtl
+         pushd pegtl/
+         
+         export PEGTL_INSTALL_DIR=$DEP_INSTALL_DIR/pegtl/3_2_2
+         
+         cmake -S . -B build -DCMAKE_INSTALL_PREFIX=$PEGTL_INSTALL_DIR
+         cd build/
+         make -j8 install
+         
+         popd
+
+#. Boost
+
+      .. code:: bash
+
+         wget --no-check-certificate https://archives.boost.io/release/1.85.0/source/boost_1_85_0.tar.gz
+         tar -xzvf boost_1_85_0.tar.gz
+         pushd boost_1_85_0/
+         
+         export BOOST_INSTALL_DIR=$DEP_INSTALL_DIR/boost/1_85_0
+         
+         ./bootstrap.sh --prefix=$BOOST_INSTALL_DIR
+         ./b2 install
+         
+         popd
+
+
+#. CSG EB
+
+     .. code:: bash
+
+        git clone https://mfix.netl.doe.gov/gitlab/exa/csg-eb
+        pushd csg-eb
+
+        CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$CATCH2_INSTALL_DIR
+        CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$GMP_INSTALL_DIR
+        CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$MPFR_INSTALL_DIR
+        CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$CGAL_INSTALL_DIR
+        CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$PEGTL_INSTALL_DIR/share/pegtl/cmake
+        export CMAKE_PREFIX_PATH
+        export CSGEB_INSTALL_DIR=$DEP_INSTALL_DIR/csgeb
+
+        cmake -Bbuild-csg-eb-release \
+              -DCMAKE_BUILD_TYPE=Release \
+              -DCMAKE_INSTALL_PREFIX=$CSGEB_INSTALL_DIR \
+              -DBoost_INCLUDE_DIR=$BOOST_INSTALL_DIR/include        
+        cmake --build build-csg-eb-release --target install
+
+        popd
+
+#. Conduit
+
+    .. code:: bash
+
+       git clone --recursive https://github.com/LLNL/conduit.git
+       pushd conduit
+       git checkout v0.8.6
+
+       export CONDUIT_INSTALL_DIR=$DEP_INSTALL_DIR/conduit_0_8_6
+
+       cmake -S ./src -B build -DCMAKE_INSTALL_PREFIX=$CONDUIT_INSTALL_DIR \
+              -DENABLE_OPENMP=OFF \
+              -DENABLE_MPI=ON \
+              -DENABLE_CUDA=OFF \
+              -DCMAKE_BUILD_TYPE=Release
+
+       cd build
+       make -j8 install
+
+       popd
+
+
+#. VTK-m
+
+    .. code:: bash
+
+       git clone --branch master https://gitlab.kitware.com/vtk/vtk-m.git
+       pushd vtk-m
+       git checkout v1.9.0
+
+       export VTK_INSTALL_DIR=$DEP_INSTALL_DIR/vtk-m_1_9_0
+
+       cmake -S . -B build -DCMAKE_INSTALL_PREFIX=$VTK_INSTALL_DIR \
+              -DVTKm_ENABLE_OPENMP=OFF \
+              -DVTKm_ENABLE_MPI=ON \
+              -DVTKm_ENABLE_CUDA=OFF \
+              -DVTKm_USE_64BIT_IDS=OFF \
+              -DVTKm_USE_DOUBLE_PRECISION=ON \
+              -DVTKm_USE_DEFAULT_TYPES_FOR_ASCENT=ON \
+              -DVTKm_NO_DEPRECATED_VIRTUAL=ON \
+              -DCMAKE_BUILD_TYPE=Release
+       cd build
+       make -j8 install
+
+       popd
+
+
+#. Ascent
+
+    .. code:: bash
+
+       git clone --recursive https://github.com/Alpine-DAV/ascent.git
+       pushd ascent
+       git checkout v0.9.0
+
+       export ASCENT_INSTALL_DIR=$DEP_INSTALL_DIR/ascent_0_9_0
+       
+       cmake -S ./src -B build -DCMAKE_INSTALL_PREFIX=$ASCENT_INSTALL_DIR \
+             -DCONDUIT_DIR=$CONDUIT_INSTALL_DIR \
+             -DVTKM_DIR=$VTK_INSTALL_DIR \
+             -DENABLE_VTKH=ON \
+             -DENABLE_FORTRAN=OFF \
+             -DENABLE_PYTHON=OFF \
+             -DENABLE_DOCS=OFF \
+             -DBUILD_SHARED_LIBS=ON \
+             -DCMAKE_BUILD_TYPE=Release \
+             -DENABLE_GTEST=OFF \
+             -DENABLE_TESTS=OFF
+       cd build
+       make -j8 install
+       
+       popd
+
+If you want to change the version of XYZABC dependency in future to test the exa code, follow the same installation process and only change the version in the variable 'XYZABC_INSTALL_DIR' to ensure you do not break your previous installation, so you can always go back.
+
+
+You have successfully installed all the libraries required for the installation of MFIX-Exa code.
+
+Building MFIX-Exa
+-----------------
+
+We build the MFIX-Exa in superbuild mode, i.e., AMReX is build as part of the MFIX-Exa build process.
+
+.. code:: bash
+
+        export HYPRE_DIR=$HYPRE_INSTALL_DIR
+        export HYPRE_ROOT=$HYPRE_DIR
+        export HYPRE_LIBRARIES=$HYPRE_DIR/lib
+        export HYPRE_INCLUDE_DIRS=$HYPRE_DIR/include
+
+        export ASCENT_DIR=$ASCENT_INSTALL_DIR
+        export CONDUIT_DIR=$CONDUIT_INSTALL_DIR
+        export CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$ASCENT_DIR/lib/cmake/ascent
+        export CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$CONDUIT_DIR/lib/cmake/conduit
+
+        export CSG_DIR=$CSG_INSTALL_DIR
+        export CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$CSG_DIR
+
+        export Boost_INCLUDE_DIR=$BOOST_INSTALL_DIR/include
+
+        cd $MFIX_SOURCE_DIR
+
+        git clone https://mfix.netl.doe.gov/gitlab/exa/mfix.git
+
+        cd mfix/src
+
+        cmake -B $MFIX_BUILD_DIR -DCMAKE_C_COMPILER=gcc \
+                  -DCMAKE_CXX_COMPILER=g++ \
+                  -DMFIX_MPI=yes \
+                  -DMFIX_OMP=no \
+                  -DMFIX_GPU_BACKEND=NONE \
+                  -DAMReX_TINY_PROFILE=no \
+                  -DCMAKE_BUILD_TYPE=Release \
+                  -DBoost_INCLUDE_DIR=$BOOST_INSTALL_DIR/include \
+                  -DMFIX_CSG=yes \
+                  -DMFIX_HYPRE=yes \
+                  -DAMReX_ASCENT=yes \
+                  -DAMReX_CONDUIT=yes \
+                  ../
+
+        cd $MFIX_BUILD_DIR
+
+        make -j8
+
+The MFIX-Exa build is now complete!
+
+The build creates an executable (mfix.exe) in the '$MFIX_BUILD_DIR' that you can use to run MFIX-Exa cases. (OPTIONAL) You can create an alias in ~/.bashrc as shown below to access MFIX-Exa executable from any path.
+
+.. code:: bash
+   
+   echo "alias mfixexa='$MFIX_BUILD_DIR/mfix'" > ~/.bashrc
+
+Running Jobs
+------------
+
+Common Slurm commands:
+
+* ``sinfo`` see available/allocated resources
+* ``sbatch runit_cpu.sh`` submit a cpu job to the queue
+* ``squeue -u USER`` check job status of user USER
+* ``squeue -p PARTITION`` check job status of partition PARTITION
+* ``scancel JOBID`` kill a job with id JOBID
+* ``salloc -N 1 -p gpu`` grab a GPU node interactively (for up to 48 hrs)
+* ``salloc -N 2 -p dev -q dev`` grab two development nodes (for up to 2 hrs)
+
+Example run scripts:
+
+.. tabs::
+
+   .. tab:: CPU
+
+      .. code:: bash
+
+         #!/bin/bash -l
+
+         ##Accounting
+         #SBATCH --partition=general  #bigmem, dev
+         #SBATCH --qos=normal         #long, dev
+
+         ##Submission
+         #SBATCH --nodes=1
+         #SBATCH --job-name="mfix-exa-run"
+         #SBATCH --output=job.out
+         #SBATCH --mail-user=first.last@netl.doe.gov
+         #SBATCH --mail-type=ALL
+
+         ##Load Modules
+         module purge
+         module load gnu/13.2.0
+         module load openmpi/4.1.5/gnu/13.2.0
+
+         ##Run the program
+         mpirun -np 36 ./mfix inputs > screen.txt
+
+
+   .. tab:: GPU
+
+      .. code:: bash
+
+         #!/bin/bash -l
+
+         ##Accounting
+         #SBATCH --partition=gpu
+         #SBATCH --qos=normal         #long
+         
+         ##Submission
+         #SBATCH --nodes=2
+         #SBATCH --ntasks-per-node=2
+         #SBATCH --ntasks-per-socket=1
+         #SBATCH --job-name="mfix-exa-run"
+         #SBATCH --output=job.out
+         #SBATCH --mail-user=first.last@netl.doe.gov
+         #SBATCH --mail-type=ALL
+         
+         ##Load Modules
+         module purge
+         module load cuda/12.4
+         module load gnu/13.2.0
+         module load openmpi/4.1.5/gnu/13.2.0
+         
+         ##Run the program
+         mpirun -np 4 -npersocket 1 ./mfix inputs > screen.txt
+