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August 20, 2018
Posted in iRender News
August 20, 2018 irender

Brooklyn

According to Wikipedia, Rendering or image synthesis is the automatic process of generating a photorealistic or non-photorealistic image from a 2D or 3D model (or models in what collectively could be called a scene file) by means of computer programs. Also, the results of displaying such a model can be called a render. A scene file contains objects in a strictly defined language or data structure; it would contain geometry, viewpoint, texture, lighting, and shading information as a description of the virtual scene. The data contained in the scene file is then passed to a rendering program to be processed and output to a digital image or raster graphics image file.

Or we can understand more simply, Render or rendering is process to 2D or 3D images from a model or more than by software. Then it becomes a 3D images, an animated character or some movie scene.

A Render farm is “a group of networked computers devoted to rendering images, used typically in the production of computer-animated films”.

How does it work?

The process of using a render farm is quite simple and consists of just three steps.

  • The first step is to send the project to the render farm. Depending on the size of the project and the location of the render farm, this step can be done by simply copying a file, uploading the file to HTTP, FTP, plugin, or physically sending a DVD with the project.
  • The second step is to start rendering. At this stage, the farm software distributes the files to several of their computers and they all start editing parts of the project in parallel. To do this, each computer participating in the rendering process has its own instance of the installed and configured 3D software.
  • The final step is to make the rendered images or movies available to the user.

Of course, depending on each farm’s software and configuration, the actual actions needed to complete each step may vary. But the general principle remains the same for all farms.

Is your project secured?

Generally, yes, but to be 100% sure you may want to check the privacy policy of each farm. The collaborative farms will distribute your project to a network of computers belonging to unknown persons in order to render it. Also, some of the paid farms will automatically make your work public if rendered on their free tier. If in doubt, ask for signing an NDA for the work you submit.

On the technical side, the upload and download processes should also be observed. This is a weak point for some of the farms, and the connection between your computer and the farm server may not be secured. For the website part, check for https:// links. Also, the FTP protocol has a secured version, called SFTP. In case of the plug-in, this is harder to determine without specialized tools, but you may ask for their support.

What are the benefits of the Render farm?

Using a render farm has some advantages, out of which speed, convenience and risk mitigation are the most important ones.

Speed:

If you render a project on multiple servers at the same time, you will be finished faster overall. The speed increase can vary depending on the circumstances and can be two to a hundred times faster. The best results, of course, come from rendering animations: Imagine rendering on 150 servers, each server about three times faster than a standard computer. This means that rendering is 450x faster overall.

Convenience:

When you send a project to a farm, you free your own computer. This means that you won’t have a constant source of noise and heat running 24/7 in your house or office. And it also means that you can use that computer to do other work. You don’t worry about the time to finish.

Risk mitigation:

Computers can overheat and shut down, or even break. Or the job could get canceled due to a power failure. And it’s even worse if this happens on the night before the project deadline. Render farms deal with these events in a safe way for the user. Even if one server or all the power fails, the rendering is moved to another machine. This means your renders will always be ready when you need them.

This is what a Render Farm is and what it does. If you are looking for a rendering partner, contact us. We will help you competently with your request.

Reference:

https://en.wikipedia.org/wiki/Rendering_(computer_graphics)

https://blog.render.st/what-is-a-render-farm/

https://blog.render.st/how-does-an-online-render-farm-work/

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