Render Farm Considerations

This is a list of things that should be taken into consideration before installing Deadline.

Shared Security Model

Before anything else, please start by reviewing the AWS Thinkbox Deadline Shared Responsibility Model. It outlines what AWS Thinkbox is responsible for and what customers are responsible for, and should be considered before installing and using Deadline.

Rendering Software and Licensing

It is recommended that the rendering applications you plan to use for rendering (ie: 3ds Max, Maya, etc) be installed on all of your render nodes. It is preferable that you install an application to the same location on each machine, as this makes configuring the Deadline plugins easier.

Note that some applications are able to be installed and run from a network location. This can make setup and configuration easier. Refer to rendering application’s documentation to see if this is supported.

In addition, it is recommended that all licensing setup before attempting to render on your network. Deadline does not handle the licensing of 3rd party rendering applications, refer to application’s documentation or contact that support team if you run into issues with licensing.

Store Assets On The Network

It is recommended that all assets (ie: scenes, footage, textures, etc) used by your render jobs be placed on a network share (preferably a server), which can be accessed via a shared path or a mapped network drive. This is important for two reasons:

  • It ensures that all the Slaves in your render farm have access to your asset files.
  • It ensures that the Slaves use the same version of the asset files that are used by your job.

Note that you can optionally submit the scene file with the job. This results in the scene file being sent to the Repository or an alternate location, and then copied locally to the Slave that renders it. If the scene file contains relative asset paths, it is recommended to not submit the scene file with the job. As these relative paths will likely be broken when the Slave renders the scene from its local location.

When rendering in a mixed operating system (OS) environment, you can configure Deadline to swap paths based on the OS it is running on. The way this works is often specific to the rendering application that you are using, please refer to Cross-Platform Rendering Considerations section for the plug-in that you are using for more information. You can access plug-in specific documentation in the Plug-ins documentation.

Save Output Files To The Network

All output should be saved to a network share as well (preferably a server). This is important as it ensures that all the Slaves in your render farm have access to the output path.

When rendering in a mixed OS environment, you can configure Deadline to swap output paths based on the operating system it is running on. The way this works is often specific to the rendering application that you are using, so please refer to Cross-Platform Rendering Considerations section for the plug-in that you are using for more information. You can access plug-in specific documentation in the Plug-ins documentation.

Path Mapping

It is recommended to avoid using only drives when path mapping. This is because on certain file types, such as vrscene and ifd files, Deadline performs path mapping on binary data. When a path is too short (for example: “Y:”), there is the potential to accidentally match on some random set of binary data and corrupt it with a new path. This should be avoided as it could cause problems.

Remote Administration

Deadline has a Remote Administration feature that can be enabled in the Client Setup section of the Repository Options, which can be accessed from the Monitor by selecting Tools -> Configure Repository Options while in Super User Mode. This feature allows you to control all the render nodes remotely from a single machine, including starting and stopping the Slave application, and running arbitrary command line applications on each machine. However, this feature can be a potential security risk if you are not behind a firewall. If this is the case, we recommend that you keep this feature disabled.


It is assumed a studio will optionally already have a WINS/DNS server system setup, to ensure the resolving of hostnames to IP addresses works seamlessly with Deadline and optionally be part of a domain via Active Directory or LDAP to handle security/user/file permissions.

Running as a Service/Daemon

For those considering running some or all of your rendernodes as a service/daemon, here is list of factors to consider:


  • The UIs for almost all of our Deadline applications are hidden. This might be restrictive if you wish to ad-hoc remote into a machine to view the Slave/Pulse/Balancer activity. Alternatively, you can always view the individual application logs and/or stream those logs ‘live’ to your Deadline Monitor.


  • Ensure any environment variables are available for the user account running the service/daemon.
  • Note the available settings, if you intend to use the Render Jobs As Job’s User feature, especially for Linux/OS X studios where the service/daemon must be run as ‘root’. See the User Security options in the Repository Configuration for additional options for su, sudo and HOME.


  • Note the lack of OpenGL on Windows unless ‘interact with desktop’ is enabled in the service properties.


    NVidia drivers (Quadro/GeForce) as of r361 now support CUDA 7.5+ renderers within a service context (Redshift uses CUDA 7.5+). Make sure you update your graphics card drivers to overcome the limitation as described below.

  • GPU renderers ONLY work in non-service mode as Windows expects a GPU card to be a graphics device only. Windows does NOT allow any background service to access the graphic card. Therefore you cannot run the client as a service if you want to use GPU rendering for the Redshift renderer in Maya or Softimage. An exception is the Nvidia TCC (Tesla Compute Cluster) capable cards such as Tesla, some Quadro and GeForce Titan cards. As the TCC driver is a computation and not a graphics driver, then it can be accessed by a Windows service. However, in the case of Quadro/GeForce graphics cards, once the TCC driver is being used, then these cards can no longer be used as a displaying graphics card for the machine. Therefore, you will require at least 2 x graphics cards in this configuration.

  • Deadline has GPU Affinity settings that can be set for Slaves, in the same way that CPU affinity can be set. These GPU affinity settings can be used by Deadline’s application plugins to set the GPUs to use for the render if the job’s renderer supports it. The GPU affinity settings are used by many plugins such as the Maya and Softimage plugins when a GPU based renderer such as RedShift is being used. For example, if you have two Slaves running on a machine with 4 GPUs, you could set their affinity so that one Slave uses GPUs 0 and 1, and the other Slave uses GPUs 2 and 3. When these Slaves render RedShift jobs, they will pass the GPUs they want to use to RedShift so that each render only uses 2 GPUs. Please consult the specific application plugin documentation for more information.

Idle Detection

  • On Windows, Idle Detection will NOT work if the Launcher is running as a service. This is because the service runs in an environment that is separate from the Desktop, and has no knowledge of any mouse or keyboard activity.
  • On Linux, the Launcher uses X11 to determine if there has been any mouse or keyboard activity. If X11 is not available, Idle Detection will NOT work. One such situation is when the launcher is run as a daemon.
  • Due to the service/daemon restrictions, you may wish to consider running your ‘headless’ rendernodes as a service/daemon but your workstations in ‘normal’ (non-service) mode so that user workstations will have Idle Detection functionality.

Mapped Drives

  • Note, drives can be mapped when running as a service on Windows. Beware that if a user is logged in and has mapped drives set up for them, the Deadline Slave service won’t see them because they run in a different environment. However, if the drives are mapped in the service’s environment (which is what the Slave is doing), then they will work fine. In the Mapped Drives section of the Repository Configuration we provide a checkbox at the bottom of the page to control this configuration.

Rebooting Linux Nodes

Linux requires elevated permissions for power related tasks such as rebooting or powering off the machine. The Deadline Launcher is responsible for issuing these commands on behalf of incoming requests (either via Remote Administration or Power Management), while the Slave is responsible for issuing these commands when finished its current task. There are three ways to allow these applications to restart or power off the machine.

The first is to allow anyone on the system to execute /sbin/shutdown. Simply execute sudo chmod g+s /sbin/shutdown. This is easiest, but may not be reliable across system and package upgrades.

The second option is to run the Launcher as root. This is ill advised as it would allow anyone with Deadline Remote Administration to run any application they like as root, including changing system passwords or deleting files.

The third option is to use sudo to allow only the Launcher’s user to reboot the machine. Available in Deadline 7.1 and higher, ensure sudo is installed and to add the following line to the /etc/sudoers file (please use visudo to edit as it will ensure proper syntax):

user_name ALL=(ALL) NOPASSWD: /sbin/poweroff, /sbin/reboot, /sbin/shutdown

Here, “user_name” should be replaced with the name of the user which the Launcher is running under. If the Slave was not started by the Launcher, the users (duplicate line for each) or user groups who may run the Slave. In the case of a user group, replace “user_name” with the name of the group prefixed with “@”. For example, “@deadline”. In most farms, users will not directly interact with the Slave, so Slave access to machine restart may not be required.

Note that regardless of which of the three options chosen, Deadline will attempt to run this command through sudo if it is installed on the system. There is a default option in CentOS and a few distributions which will disallow sudo from running without a terminal. The error will be visible in the Launcher logs as sudo: sorry, you must have a tty to run sudo. To work around this, run visudo and comment out the line which looks like so:

Defaults requiretty

Deadline should then be allowed to run sudo while running as a service without an active terminal.

Automatic Updates

Deadline has an Automatic Updates feature that can be enabled in the Client Setup section of the Repository Options, which can be accessed from the Monitor by selecting Tools -> Configure Repository Options while in Super User Mode. Enabling this feature makes minor Deadline upgrades easy, with little to no downtime. Refer to the Upgrading Documentation for more information.

Setup An SMTP Server for Emails

Deadline can use email to notify users when their jobs have succeeded or failed. Email can also be used to notify system administrators of all sorts of events, like when Slaves stall or when jobs fail. It is recommended that an SMTP server be setup so that you can make use of these features.

You can configure the email notification settings in the Repository Options, which can be accessed from the Monitor by selecting Tools -> Configure Repository Options while in Super User Mode.

Auto Login on Windows Render Nodes

If you’re not running the Slave as a service, it can be set to start automatically when the render mode it is on starts up, but this requires that the render node login automatically. On Windows, this can be done by modifying the registry on each render node.

These are the steps to setup your render node registry to login:

  1. Download the Registry Entry File For Auto Login from the Miscellaneous Deadline Downloads Page.
  2. Edit the file to use the username and password you wish to.
  3. Login to the render node as the specified user, then double-click on this file to run.
  4. The next time you restart the machine, it should login automatically as the specified user.

By default, the Slaves are set to start automatically when the machine logs in. This setting, as well as others, can be modified from the Launcher on each machine.

App Nap on Mac OS X Render Nodes and Workstations

App Nap is a collection of new features in OS X Mavericks (10.9+) that helps conserve CPU energy use by “slowing down” or stopping applications that cannot be seen, for example if they are behind another window or the screen has been put to sleep. However, this can have an adverse affect on Deadline and/or the applications it is rendering with. Because of this, we recommend disabling App Nap and screen power saving modes (if applicable) on render nodes across the entire operating system by enabling the “Prevent App Nap” checkbox via right-click “Get Info” for each application on each machine or by following these steps in terminal:

Disable App Nap
  1. Open a terminal (the Terminal can be found in /Applications/Utilities).

  2. Run the following command (sudo rights required) and you must restart the machine

    defaults write NSGlobalDomain NSAppSleepDisabled -bool YES

If you wish to re-enable App Nap, follow the steps above, but run the following command for (2) instead:

defaults delete NSGlobalDomain NSAppSleepDisabled

You can check the status of the setting (if it already exists on a machine) by the following command, where “1” means App Nap is disabled and “0” means it is enabled:

defaults read NSGlobalDomain NSAppSleepDisabled

If workstations are being used as render nodes, it is recommended to disable App Nap on them as well. However, if workstations are simply being used to submit and monitor render jobs, then this shouldn’t be necessary.

On Macs which have built-in or connected external displays, once a screen saver has begun or the display has been put to sleep by power management, Deadline as well as other rendering applications will be throttled down to conserve energy, regardless of the per-app App Nap setting.

Finally, the machine that is running Pulse/Balancer should also have App Nap disabled, or at the very least, disabled for the Pulse/Balancer applications. To disable App Nap for the Pulse/Balancer application only, right-click (or Command-click) on the DeadlinePulse/DeadlineBalancer application in Finder, and select Get Info. Then in the General section, check the “Prevent App Nap” box. If Pulse/Balancer is currently running, you will have to restart it for the changes to take effect.

Disable WER on Windows

When applications crash on Windows, the system holds the application open in memory and displays a series of helpful boxes asking if you want to submit the error report to Microsoft. While that’s super handy for all sorts of reasons, if there’s no one there to click the dialog (headless render node), Deadline will assume the application is still running and wait indefinitely by default.

The registry fix below will stop that from popping up on render nodes that don’t have baby sitters. Meaning when the application crashes, it actually exits like we know it should. This change is system-wide, but can be configured per-user if you like by changing the registry hive used (HKEY_CURRENT_USER versus HKEY_LOCAL_MACHINE). Ensure you restart the machine after changing the registry setting and it is always recommended to take a backup before editing a machine’s registry. Copy the code below into a file: “DisableCrashReporting.reg” and double-click this file as a user with administrator privileges. Alternatively, you can manually add/edit the registry entry via “regedit.exe” or inject the registry silently via the command-line “regedit.exe /s DisableCrashReporting.reg”.

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting]

For more information about the possible settings, see here: MSDN article WER Settings.

It’s also possible to just default to sending them if you like, or to store the crash dumps in a safe place if you’re a developer.

Firewall, Anti-Virus & Security Considerations

Here is a checklist of items which should be considered by those responsible for deploying Deadline repository and client software.

If you haven’t done so already, please review the AWS Thinkbox Deadline Shared Responsibility Model.

Ensure you consider additional configuration requirements for any software/hardware firewall clients, network switches, anti-virus software clients and Operating System specific security controls such as Windows UAC or SELinux (Security-Enhanced), which may attempt to block Deadline communication.

It is recommended during initial setup & configuration to disable all firewalls, anti-virus software, etc and test the basic operation and functionality of Deadline. Once this has been verified as correct, then slowly re-enable all necessary other software, re-testing and confirming that Deadline execution is still correct.

Windows UAC

Ensure Windows UAC is correctly configured to allow Deadline communication and the correct execution of the Deadline applications.

Anti-Virus Software

Ensure Anti-Virus software does NOT block Deadline and allows Deadline executables to run normally on ALL machines.

Deadline Executables

Allow Deadline executables to pass-through any applicable Client Firewall. Ensure you consider all applicable policy scopes (Windows - domain, private, public) and both inbound & outbound rules:

  • [INSTALL_PATH] Windows executable / Mac OS X executable / Linux executable
  • [INSTALL_PATH] deadlinecommand.exe / / deadlinecommand
  • [INSTALL_PATH] deadlinecommandbg.exe / / deadlinecommandbg
  • [INSTALL_PATH] deadlinelauncher.exe / / deadlinelauncher
  • [INSTALL_PATH] deadlinelauncherservice.exe (Windows Only)
  • [INSTALL_PATH] deadlinemonitor.exe / / deadlinemonitor
  • [INSTALL_PATH] deadlineslave.exe / / deadlineslave
  • [INSTALL_PATH] deadlinercs.exe / / deadlinercs
  • [INSTALL_PATH] deadlinepulse.exe / / deadlinepulse
  • [INSTALL_PATH] deadlinebalancer.exe / / deadlinebalancer

Deadline’s default local client software [INSTALL_PATH] for each OS are as follows (where [VERSION] is the Deadline version):

  • Windows: “C:\Program Files\Thinkbox\Deadline[VERSION]\bin”
  • Mac OS X: “/Applications/Thinkbox/Deadline[VERSION]/bin”
  • Linux: “/opt/Thinkbox/Deadline[VERSION]”

Application Executables

Make sure you allow your application executables to pass-through any applicable Client Firewall. Ensure you consider all applicable policy scopes (Windows - domain, private, public) and both inbound & outbound rules. See here for specific 3dsMax and 3dsCmd Firewall Exceptions documentation.

User Accounts for Render Nodes

The Deadline Slave is designed to run processes and code on remote machines; this is part of the rendering process. Because of this functionality, it is possible for Deadline to run processes or code that could be harmful to the machine. For example, a user could submit a command line job to Deadline that formats the root drive. While plugins that allow for arbitrary process/code execution like CommandLine, CommandScript, and Python are disabled by default, it is still recommended that you use best practices when choosing the user account that the Deadline Slave runs as.

By default, the Deadline Slave starts processes as the user that it was launched by, so it is recommended that the user account that starts the Deadline Slave only have privileges that are necessary to complete the rendering of its tasks. For example, the rendering application probably doesn’t need write access to the root drive. Restricting privileges will reduce the blast radius of what malicious processes and code can do on that machine.

When restricting a user account, keep in mind that some things are still required. For example:

  1. User accounts must have network access so that they can communicate with your file server and the Deadline Database.
  2. User accounts must have Deadline Repository access.


If render nodes are connected to a remote Repository via a Connection Server, the same rules above apply to the Deadline Remote Connection Server.


It is recommended to not run these applications under Administrator or root user accounts, unless there is good reason to do so. These user accounts do not have restricted privileges.

MongoDB Server & Deadline clients

Ensure you allow MongoDB service daemon to pass through any firewall and network switch. Ensure you consider all applicable policy scopes (Windows - domain, private, public) and both inbound & outbound rules:

  • [INSTALL_PATH] Windows executable / Mac OS X executable / Linux executable
  • [INSTALL_PATH] mongod.exe / mongod / mongod

Deadline’s default local database software [INSTALL_PATH] for each OS are as follows (where [VERSION] is the Deadline version):

  • Windows: “c:\DeadlineDatabase[VERSION]\mongo\application\bin”
  • Mac OS X: “/Applications/Thinkbox/DeadlineDatabase[VERSION]/mongo/application/bin”
  • Linux: “/opt/Thinkbox/DeadlineDatabase[VERSION]/mongo/application/bin”

Mono (Mac OS X / Linux Only)

Ensure Mono executable is allowed to pass-through any firewall / anti-virus software.

Port Configuration.

Ensure the machine(s) running the MongoDB, Deadline repository, Deadline Pulse/Balancer/Monitor/Slave ALL have the ability to communicate with each other on your local and/or extended network with the following (default) TCP or UDP ports.

Deadline applications use the base port number of 17000. We then 10 * the Deadline version number to get the base port number for a version (so 17090 for Deadline 9 and 17000 for Deadline 10). The base port number is used as the default for the Launcher, and then the rest are offset by one as per the table below.

Protocol Port Number Application / Service Comment
TCP 17000 Launcher Default TCP port - Launcher listening port
UDP 17001 Auto-Config Default UDP port - Pulse listens for broadcasts on the UDP port
TCP 17001 Auto-Config Default TCP port - Pulse sends Auto-Config data over TCP
TCP 17002 Pulse Default TCP port - Configure Repository Options - Pulse Settings
TCP 17003 Slave Default TCP port - Slave
TCP 17004 License Forwarder Default TCP port - License Forwarder
TCP 17005 License Forwarder Messaging Default TCP port - License Forwarder
TCP 4000 AWS Asset Server Default TCP port - AWS Asset Server
TCP 8080 RCS (http) Default TCP port - Remote Connection Server. This is the default port the Remote Connection Server(s) will attach to.
TCP 8082 Web Service (http) Default TCP port - Web Service
TCP 443 UBL TCP port for Deadline - Usage Based Licensing
TCP 27100 MongoDB Default TCP port for MongoDB installed by Deadline DB/Repo installer
TCP 28100 MongoDB Web API Access the http web site (optional) for database information
UDP 7 WoL (Wake-On-Lan) Default UDP port - Configure Repository Options - Wake On Lan Settings
UDP 9 WoL (Wake-On-Lan) Default UDP port - Configure Repository Options - Wake On Lan Settings
UDP 123 NTP  
TCP 25 SMTP For mail server to receive e-mail notifications from Slaves and Pulse
TCP 587 SMTP (submission)  
TCP 465 SMTP SSL For sending notifications using SSL
UDP 161 SNMP (GET requests) Default UDP port - Power Mgmt - Thermal Sensors (UDP 162 for SNMP Traps NOT used by Deadline)

License Server

If necessary, ensure that the Thinkbox Flexlm license file has been configured to run over an exact TCP port and this port has also been allowed access through any required firewall or network switch. Please refer to the FLEXnet Licensing Documentation.

External Web Service Access & Deadline Mobile

If external network access is required, please see the Web Service and Deadline Mobile documentation.