diff --git a/_data/sidebars/merlin6_sidebar.yml b/_data/sidebars/merlin6_sidebar.yml
index b1d13dd..b91e55e 100644
--- a/_data/sidebars/merlin6_sidebar.yml
+++ b/_data/sidebars/merlin6_sidebar.yml
@@ -93,6 +93,10 @@ entries:
url: /merlin6/impi.html
- title: Python
url: /merlin6/python.html
+ - title: ANSYS
+ url: /merlin6/ansys.html
+ - title: ANSYS RSM
+ url: /merlin6/ansys-rsm.html
- title: ANSYS/CFX
url: /merlin6/ansys-cfx.html
- title: ANSYS/Fluent
diff --git a/images/ANSYS/rsm-1-add_hpc_resource.png b/images/ANSYS/rsm-1-add_hpc_resource.png
new file mode 100644
index 0000000..91a5d1e
Binary files /dev/null and b/images/ANSYS/rsm-1-add_hpc_resource.png differ
diff --git a/images/ANSYS/rsm-2-add_cluster.png b/images/ANSYS/rsm-2-add_cluster.png
new file mode 100644
index 0000000..4bdfd8b
Binary files /dev/null and b/images/ANSYS/rsm-2-add_cluster.png differ
diff --git a/images/ANSYS/rsm-3-add_scratch_info.png b/images/ANSYS/rsm-3-add_scratch_info.png
new file mode 100644
index 0000000..932deee
Binary files /dev/null and b/images/ANSYS/rsm-3-add_scratch_info.png differ
diff --git a/images/ANSYS/rsm-4-get_slurm_queues.png b/images/ANSYS/rsm-4-get_slurm_queues.png
new file mode 100644
index 0000000..e9c241b
Binary files /dev/null and b/images/ANSYS/rsm-4-get_slurm_queues.png differ
diff --git a/images/ANSYS/rsm-5-authenticating.png b/images/ANSYS/rsm-5-authenticating.png
new file mode 100644
index 0000000..2ff7ef8
Binary files /dev/null and b/images/ANSYS/rsm-5-authenticating.png differ
diff --git a/images/ANSYS/rsm-6-selected-partitions.png b/images/ANSYS/rsm-6-selected-partitions.png
new file mode 100644
index 0000000..4840cb9
Binary files /dev/null and b/images/ANSYS/rsm-6-selected-partitions.png differ
diff --git a/pages/merlin6/02-How-To-Use-Merlin/using-modules.md b/pages/merlin6/02-How-To-Use-Merlin/using-modules.md
index dc2297d..df46949 100644
--- a/pages/merlin6/02-How-To-Use-Merlin/using-modules.md
+++ b/pages/merlin6/02-How-To-Use-Merlin/using-modules.md
@@ -52,6 +52,62 @@ module use deprecated
However, software moved to this release stage can be directly loaded without the need of invoking it. This ensure proper life cycling of the software, and making it transparent for the end users.
+## Module overlays
+
+Recent Pmodules releases contain a feature called **Pmodules overlays**. In Merlin, overlays are used to source software from a different location.
+In that way, we can have custom private versions of software in the cluster installed on high performance storage accessed over a low latency network.
+
+**Pmodules overlays** are still ***under development***, therefore consider that *some features may not work or do not work as expected*.
+
+Pmodule overlays can be used from Pmodules `v1.1.5`. However, Merlin is running Pmodules `v1.0.0rc10` as the default version.
+Therefore, one needs to load first a newer version of it: this is available in the repositories and can be loaded with **`module load Pmodules/$version`** command.
+
+Once running the proper Pmodules version, **overlays** are added (or invoked) with the **`module use $overlay_name`** command.
+
+### overlay_merlin
+
+Some Merlin software is already provided through **PModule overlays** and has been validated for using and running it in that way.
+Therefore, Melin contains an overlay called **`overlay_merlin`**. In this overlay, the software is installed in the Merlin high performance storage,
+specifically in the ``/data/software/pmodules`` directory. In general, if another copy exists in the standard repository, we strongly recommend to use
+the replica in the `overlay_merlin` overlay instead, as it provides faster access and it may also provide some customizations for the Merlin6 cluster.
+
+For loading the `overlay_merlin`, please run:
+```bash
+module load Pmodules/1.1.6 # Or newer version
+module use overlay_merlin
+```
+
+Then, once `overlay_merlin` is invoked, it will disable central software installations with the same version (if exist), and will be replaced
+by the local ones in Merlin. Releases from the central Pmodules repository which do not have a copy in the Merlin overlay will remain
+visible. In example, for each ANSYS release, one can identify where it is installed by searching ANSYS in PModules with the `--verbose`
+option. This will show the location of the different ANSYS releases as follows:
+* For ANSYS releases installed in the central repositories, the path starts with `/opt/psi`
+* For ANSYS releases installed in the Merlin6 repository (and/or overwritting the central ones), the path starts with `/data/software/pmodules`
+
+```bash
+(base) ❄ [caubet_m@merlin-l-001:/data/user/caubet_m]# module load Pmodules/1.1.6
+module load: unstable module has been loaded -- Pmodules/1.1.6
+
+(base) ❄ [caubet_m@merlin-l-001:/data/user/caubet_m]# module use merlin_overlay
+
+(base) ❄ [caubet_m@merlin-l-001:/data/user/caubet_m]# module search ANSYS --verbose
+
+Module Rel.stage Group Dependencies/Modulefile
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ANSYS/2019R3 stable Tools dependencies:
+ modulefile: /data/software/pmodules/Tools/modulefiles/ANSYS/2019R3
+ANSYS/2020R1 stable Tools dependencies:
+ modulefile: /opt/psi/Tools/modulefiles/ANSYS/2020R1
+ANSYS/2020R1-1 stable Tools dependencies:
+ modulefile: /opt/psi/Tools/modulefiles/ANSYS/2020R1-1
+ANSYS/2020R2 stable Tools dependencies:
+ modulefile: /data/software/pmodules/Tools/modulefiles/ANSYS/2020R2
+ANSYS/2021R1 stable Tools dependencies:
+ modulefile: /data/software/pmodules/Tools/modulefiles/ANSYS/2021R1
+ANSYS/2021R2 stable Tools dependencies:
+ modulefile: /data/software/pmodules/Tools/modulefiles/ANSYS/2021R2
+```
+
## PModules commands
Below is listed a summary of all available commands:
diff --git a/pages/merlin6/05-Software-Support/ansys-rsm.md b/pages/merlin6/05-Software-Support/ansys-rsm.md
new file mode 100644
index 0000000..4e3f808
--- /dev/null
+++ b/pages/merlin6/05-Software-Support/ansys-rsm.md
@@ -0,0 +1,108 @@
+---
+title: ANSYS RSM (Remote Resolve Manager)
+#tags:
+last_updated: 37 February 2022
+keywords: software, ansys, rsm, slurm
+summary: "This document describes how to use the ANSYS Remote Resolve Manager service in the Merlin6 cluster"
+sidebar: merlin6_sidebar
+permalink: /merlin6/ansys-rsm.html
+---
+
+## ANSYS Remote Resolve Manager
+
+**ANSYS Remote Solve Manager (RSM)** is used by ANSYS Workbench to submit computational jobs to HPC clusters directly from Workbench on your desktop.
+Therefore, PSI workstations ***with direct access to Merlin*** can submit jobs by using RSM.
+
+Users are responsible for requesting possible necessary network access and debugging any possible connectivity problem with the cluster.
+In example, in case that the workstation is behind a firewall, users would need to request a **[firewall rule](https://psi.service-now.com/psisp/?id=psi_new_sc_category&sys_id=6f07ab1e4f3913007f7660fe0310c7ba)** to enable access to Merlin.
+
+{{site.data.alerts.warning}} The Merlin6 administrators are not responsible for connectivity problems between users workstations and the Merlin6 cluster.
+{{site.data.alerts.end}}
+
+### The Merlin6 RSM service
+
+A RSM service is running on each login node. This service will listen a specific port and will process any request using RSM (in example, from ANSYS users workstations).
+The following login nodes are configured with such services:
+* `merlin-l-01.psi.ch`
+* `merlin-l-001.psi.ch`
+* `merlin-l-002.psi.ch`
+
+Each ANSYS release installed in `/data/software/pmodules/ANSYS` should have its own RSM service running (the listening port is the default one set by that ANSYS release). With the following command users can check which ANSYS releases have an RSM instance running:
+
+```bash
+systemctl | grep pli-ansys-rsm-v[0-9][0-9][0-9].service
+```
+
+
+[Example] Listing RSM service running on merlin-l-001.psi.ch
+
+(base) ❄ [caubet_m@merlin-l-001:/data/user/caubet_m]# systemctl | grep pli-ansys-rsm-v[0-9][0-9][0-9].service
+ pli-ansys-rsm-v195.service loaded active exited PSI ANSYS RSM v195
+ pli-ansys-rsm-v202.service loaded active exited PSI ANSYS RSM v202
+ pli-ansys-rsm-v211.service loaded active exited PSI ANSYS RSM v211
+ pli-ansys-rsm-v212.service loaded active exited PSI ANSYS RSM v212
+ pli-ansys-rsm-v221.service loaded active exited PSI ANSYS RSM v221
+
+
+
+## Configuring RSM client on Windows workstations
+
+Users can setup ANSYS RSM in their workstations to connect to the Merlin6 cluster.
+The different steps and settings required to make it work are that following:
+
+1. Open the RSM Configuration service in Windows for the ANSYS release you want to configure.
+2. Right-click the **HPC Resources** icon followed by **Add HPC Resource...**
+![Adding a new HPC Resource]({{ "/images/ANSYS/rsm-1-add_hpc_resource.png" }})
+3. In the **HPC Resource** tab, fill up the corresponding fields as follows:
+![HPC Resource]({{"/images/ANSYS/rsm-2-add_cluster.png"}})
+* **"Name"**: Add here the preffered name for the cluster. In example: `Merlin6 cluster - merlin-l-001`
+* **"HPC Type"**: Select `SLURM`
+* **"Submit host"**: Add one of the login nodes. In example `merlin-l-001`.
+* **"Slurm Job submission arguments (optional)"**: Add any required Slurm options for running your jobs.
+ * In general, `--hint=nomultithread` should be at least present.
+* Check **"Use SSH protocol for inter and intra-node communication (Linux only)"**
+* Select **"Able to directly submit and monitor HPC jobs"**.
+* **"Apply"** changes.
+4. In the **"File Management"** tab, fill up the corresponding fields as follows:
+![File Management]({{"/images/ANSYS/rsm-3-add_scratch_info.png"}})
+* Select **"RSM internal file transfer mechanism"** and add **`/shared-scratch`** as the **"Staging directory path on Cluster"**
+* Select **"Scratch directory local to the execution node(s)"** and add **`/scratch`** as the **HPC scratch directory**.
+* **Never check** the option "Keep job files in the staging directory when job is complete" if the previous
+option "Scratch directory local to the execution node(s)" was set.
+* **"Apply"** changes.
+5. In the **"Queues"** tab, use the left button to auto-discover partitions
+![Queues]({{"/images/ANSYS/rsm-4-get_slurm_queues.png"}})
+* If no authentication method was configured before, an authentication window will appear. Use your
+PSI account to authenticate. Notice that the **`PSICH\`** prefix **must not be added**.
+![Authenticating]({{"/images/ANSYS/rsm-5-authenticating.png"}})
+* From the partition list, select the ones you want to typically use.
+ * In general, standard Merlin users must use **`hourly`**, **`daily`** and **`general`** only.
+ * Other partitions are reserved for allowed users only.
+* **"Apply"** changes.
+![Select partitions]({{"/images/ANSYS/rsm-6-selected-partitions.png"}})
+6. *[Optional]* You can perform a test by submitting a test job on each partition by clicking on the **Submit** button
+for each selected partition.
+
+{{site.data.alerts.tip}}
+Repeat the process from for adding other login nodes if necessary. This will give users the alternative
+of using another login node in case of maintenance windows.
+{{site.data.alerts.end}}
+
+## Using RSM in ANSYS
+
+Using the RSM service in ANSYS is slightly different depending on the ANSYS software being used.
+Please follow the official ANSYS documentation for details about how to use it for that specific software.
+
+Alternativaly, please refer to some the examples showed in the following chapters (ANSYS specific software).
+
+### Using RSM in ANSYS Fluent
+
+For further information for using RSM with Fluent, please visit the **[ANSYS RSM](/merlin6/05-Software-Support/ansys-fluent.html)** section.
+
+### Using RSM in ANSYS CFX
+
+For further information for using RSM with CFX, please visit the **[ANSYS RSM](/merlin6/05-Software-Support/ansys-cfx.html)** section.
+
+### Using RSM in ANSYS MAPDL
+
+For further information for using RSM with MAPDL, please visit the **[ANSYS RSM](/merlin6/05-Software-Support/ansys-mapdl.html)** section.
diff --git a/pages/merlin6/05-Software-Support/ansys.md b/pages/merlin6/05-Software-Support/ansys.md
new file mode 100644
index 0000000..9a2eab6
--- /dev/null
+++ b/pages/merlin6/05-Software-Support/ansys.md
@@ -0,0 +1,89 @@
+---
+title: ANSYS
+#tags:
+last_updated: 37 February 2022
+keywords: software, ansys, slurm
+summary: "This document describes how to load and use ANSYS in the Merlin6 cluster"
+sidebar: merlin6_sidebar
+permalink: /merlin6/ansys.html
+---
+
+This document describes generic information of how to load and run ANSYS software in the Merlin cluster
+
+## ANSYS software in Pmodules
+
+The ANSYS software can be loaded through **[PModules](/merlin6/using-modules.html)**.
+
+The default ANSYS versions are loaded from the central PModules repository.
+However, there are some known problems that can pop up when using some specific ANSYS packages in advanced mode.
+Due to this, and also to improve the interactive experience of the user, ANSYS has been also installed in the
+Merlin high performance storage and we have made it available from Pmodules.
+
+### Loading Merlin6 ANSYS
+
+For loading the Merlin6 ANSYS software, one needs to run Pmodules v1.1.4 or newer, and then use a specific repository
+(called **`overlay_merlin`**) which is ***only available from the Merlin cluster***:
+
+```bash
+module load Pmodules/1.1.6
+module use overlay_merlin
+```
+
+Once `overlay_merlin` is invoked, it will disable central ANSYS installations with the same version, which will be replaced
+by the local ones in Merlin. Releases from the central Pmodules repository which have not a local installation will remain
+visible. For each ANSYS release, one can identify where it is installed by searching ANSYS in PModules with the `--verbose`
+option. This will show the location of the different ANSYS releases as follows:
+* For ANSYS releases installed in the central repositories, the path starts with `/opt/psi`
+* For ANSYS releases installed in the Merlin6 repository (and/or overwritting the central ones), the path starts with `/data/software/pmodules`
+
+
+[Example] Loading ANSYS from the Merlin6 PModules repository
+
+(base) ❄ [caubet_m@merlin-l-001:/data/user/caubet_m]# module load Pmodules/1.1.6
+module load: unstable module has been loaded -- Pmodules/1.1.6
+
+(base) ❄ [caubet_m@merlin-l-001:/data/user/caubet_m]# module use merlin_overlay
+
+(base) ❄ [caubet_m@merlin-l-001:/data/user/caubet_m]# module search ANSYS --verbose
+
+Module Rel.stage Group Dependencies/Modulefile
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ANSYS/2019R3 stable Tools dependencies:
+ modulefile: /data/software/pmodules/Tools/modulefiles/ANSYS/2019R3
+ANSYS/2020R1 stable Tools dependencies:
+ modulefile: /opt/psi/Tools/modulefiles/ANSYS/2020R1
+ANSYS/2020R1-1 stable Tools dependencies:
+ modulefile: /opt/psi/Tools/modulefiles/ANSYS/2020R1-1
+ANSYS/2020R2 stable Tools dependencies:
+ modulefile: /data/software/pmodules/Tools/modulefiles/ANSYS/2020R2
+ANSYS/2021R1 stable Tools dependencies:
+ modulefile: /data/software/pmodules/Tools/modulefiles/ANSYS/2021R1
+ANSYS/2021R2 stable Tools dependencies:
+ modulefile: /data/software/pmodules/Tools/modulefiles/ANSYS/2021R2
+
+
+
+
+{{site.data.alerts.tip}} Please only use Merlin6 ANSYS installations from `overlay_merlin` in the Merlin cluster.
+{{site.data.alerts.end}}
+
+## ANSYS Documentation by product
+
+### ANSYS RSM
+
+**ANSYS Remote Solve Manager (RSM)** is used by ANSYS Workbench to submit computational jobs to HPC clusters directly from Workbench on your desktop.
+Therefore, PSI workstations with direct access to Merlin can submit jobs by using RSM.
+
+For further information, please visit the **[ANSYS RSM](/merlin6/05-Software-Support/ansys-rsm.html)** section.
+
+### ANSYS Fluent
+
+For further information, please visit the **[ANSYS RSM](/merlin6/05-Software-Support/ansys-fluent.html)** section.
+
+### ANSYS CFX
+
+For further information, please visit the **[ANSYS RSM](/merlin6/05-Software-Support/ansys-cfx.html)** section.
+
+### ANSYS MAPDL
+
+For further information, please visit the **[ANSYS RSM](/merlin6/05-Software-Support/ansys-mapdl.html)** section.