These Factors Will Affect The Cloud Rendering Time

Nowadays, the 3D CG production process is more and more complicated, involving more and more software and plug-ins. Film production requires a lot of time in the rendering step. Even though the render farm has powerful hardware, I can still hear some people complaining: why the rendering speed is so slow , and why the rendering time is so long?

Since the rendering is done by dividing the screen, the complexity, lighting, and detail textures that need to be colored in different blocks are different, so the rendering speed will be very different. Today we will analyze, in addition to the hardware problems, what’s the factors that will affect the length of the cloud rendering time.
In general, these factors can be divided into two categories: the factors in making the rendering file and the renderer.
The factors that make the file
Model face, material, light, hair, rendering settings.
1. Model factors:
Models include polygons, fluids, etc., and the rendering speed will drop dramatically when the total amount of models is too large. This problem can be said to be "hardware damage." Sometimes due to design needs, complex models cannot be avoided. Therefore, such objects can only be seen in the camera's field of view as little as possible by reasonably adjusting the angle of the camera. Of course, this depends on whether the object is the subject of the user's performance.

  1. Material
    The effect of the material is generally divided into two parts: the texture type of different materials and the precision of the texture.
    In order to get real rendering results, each texture's texture contains Color Map highlights, reflection maps, bump maps, displacement maps, and more. Different materials have a great impact on rendering speed.
    The 3D model of the movie must be more accurate than the animated character. The more accurate the model, the more the number of faces, the higher the fineness, the more the number of textures needed. And the texture may be expanded from 1024 to 2048, or even larger, which undoubtedly adds difficulty to rendering.
  1. Lighting
    Unreasonable use of lighting, excessive use of light sampling parameters and quantity will increase rendering time. The intensity and amount of light also affects rendering speed.
    It should be noted that this problem exists not only in the light intensity, but also in the rendering engine (secondary bounce) intensity and (skylight) illumination intensity. And the higher the subdivision value, the slower the speed, but the shadow effect is more delicate.
    Floodlights are now more frequently used. They calculate many unwanted shadows, so their resource usage is very large. Unless it is necessary, try to minimize its use and use spotlights instead.
  1. Hair
    Hair rendering has always been a big problem in the CG industry. To get realistic hair effects, rendering speed is definitely time consuming. Even if the hair just adds reflection, slow reflection and highlights, its rendering speed is almost twice the time of the model. If you add transparency to the hair, the rendering time will be doubled. Even Hollywood's top animation studios, such as the Blue Sky or Pixar, are as optimized as possible for hair problems.
  1. Rendering settings
    In rendering settings, the concept of anti-aliased sampling refers to an algorithm for sampling and filtering, and produces the final set of pixels to complete the rendering of the image. Strictly speaking, no matter which sampling method is used, the rendering time is increased, so consider For different situations, using different rendering resolutions for different scenes is one of the most important rendering settings.
    And in order to avoid repeated rendering, it is usually done first test rendering. The larger the image size, the better the quality and the slower the speed, so it is necessary to set the image size according to the size of the 3D scene.

Renderer factor
Different software uses different renderers and there are differences in rendering time. The Arnold effect is the most stable, but the speed of rendering transparent objects in glass is simply crashing. Octane is also a GPU-based renderer, and if a slightly larger scene is solved with PL, the efficiency will drop.
Although the V-Ray renderer is stable, there are too many setting parameters, especially in terms of material adjustment and lighting performance, which makes the rendering speed slow overall.
Because many factors will affect the speed of rendering, so whether in the production or before the rendering settings, we must optimize.


What is a render farms?
What is a render farms?
What is a render farms? Render farm, also called services. In fact, we should call him "Distributed Parallel Cluster Computing System", a supercomputer built with off-the-shelf CPU /GPU, Ethernet and operating system. It enables mainstream commercial computer hardware devices to reach or approach the computing power of supercomputers. The principle is that distributed parallel computing is divided into spatial parallelism and temporal parallelism. Parallelism in space refers to the execution of computations concurrently with multiple processors. Some renderers already support single-frame split-and-split rendering. Parallelism in time refers to pipeline technology. The frontier scientific research of cluster computing systems is mainly spatial parallelism, and the flow parallel computing in time has been widely used. Where can I get a render farms? You can rent a , don’t need to spend huge amount of money on purchasing hardware. Using a render farm service, save money and time, secure, easy to use, convenient. Most of the render farm companies will sign the NDA with their clients and promise they will never disclose any materials with the 3rd parties. So NDA terms is a necessary factor you should consider before choose the right render farm service. Generally speaking, the supports most of the mainstream 3D software and plugins, they can even help install it according to your unique requirements. When you submit your rendering project to , just a few minutes to finish it. Sign up for $20 free trial now~
Is Building Your Own Render Farm The Best Option?
Is Building Your Own Render Farm The Best Option?
Thanks to growing high-speed internet access, production studios now have new options for rendering their animations in the cloud. , like Fox Renderfarm, offer studios enormous rendering power at low costs. This has many production studios asking a question for the first time. Should a studio build and maintain its own render farm, or pay for a cloud solution? Before high-speed internet was a reality, a studio’s only option was to build an on-site render farm. Sure, a small shop could render on unused workstations at night. But, that wouldn’t do the job for most studios. So, owning racks of dedicated rendering equipment became standard. Owning an on-site render farm has its advantages. The system can be custom built for whatever a studio needs. It is always available. Since the studio staff built it, they can fix it when it goes down. And, since it’s on the premises, there are no security concerns. But, owning a farm is costly. An average render slave can cost several thousand dollars. Multiply that by the amount of slave machines needed. Then, all those nodes need to be loaded with rendering software. Some software companies offer unlimited slave licenses for free. But, most charge a fee based on the amount of slaves. If the is large enough, power consumption and climate control become concerns. If the farm operates non-stop, and multiple teams need access to it for different projects, one or more render wranglers must be hired to manage it. Owning an on-site render farm is a good choice if a studio has a large budget, an IT staff, and needs a customized solution. But, not all studios fit that description. Thankfully, there are now online options for rendering. At one end of the spectrum is collaborative rendering. In this model, users join an online network of fellow 3D animators who volunteer their computing power to be used by everyone in the collective. This is a great option for students and very small production houses since it’s usually free. But there are obvious downsides. Support for the latest renderers and plug-ins may be limited. Your equipment must be made available for other users to render their projects. The availability of, and quality of rendering equipment at any given time is unpredictable. Not to mention the security risks. It is hard to keep track of exactly who will see your files. A collaborative solution may work for a studio when the budget is very tight, when security is not a concern, and when deadlines are flexible. The biggest challenge may be finding a collaborative network that supports the studio’s choice of rendering software. On the other end of the spectrum there are professional, online rendering services. Cloud render farms charge you only for the time it takes to render. You can use them as much, or as little as you need. A good will have hundreds of top-notch machines with the latest software available to customers 24 hours a day. A good rendering service will also make security one of its top goals, so confidentiality is assured. All the IT troubles associated with maintaining the farm are handled by the render service, not the customer. Some online farms will even work with customers to load custom plug-ins if needed. Since online rendering offers so much, several studios are choosing to forgo the expense of building, and maintaining their own farms. Even studios that already have a small render farm in place can benefit from cloud rendering when overflow work comes in. As internet speeds become even faster, and demand for rendering power grows, makes more and more sense for 3D studios. ## About: The author, Shaun Swanson, has fifteen years of experience in 3D rendering and graphic design. He has used several software packages and has a very broad knowledge of digital art ranging from entertainment to product design.
Why the render farm can make you work faster and better?
Why the render farm can make you work faster and better?
Rendering is a very important part during the 3D production. This step will generate the final image including information such as models, scenes, textures, vfx and lights. Rendering in film and television effects is computationally intensive and requires a lot of server computing, especially for animated film production, where rendering time is almost a big challenge. So for the producer, is a good choice. ## Why the render farm can make you work faster and better? The render farm is also called the conputer cluster. It refers to the calculation method of a supercomputer built with an existing CPU, Ethernet, and operating system. The render farm are consist of thousands of servers. is an upgrade on the render farm. We can upload the material to the cloud and use the render farm for calculations remotely. And the server will distribute the files to multiple servers and render them according to the uploader's choice. For example, a 10 second special effect lens, 10 hours for a single machine rendering, then if you use 10 machines to render, then the rendering time becomes 1/10. ## Cloud rendering has the following advantages 1. No geographical restrictions, wider market scope, lower idle rate and cost savings. 2. Render farm with better server configuration to ensure user safety and efficiency. 3. Control the rendering progress anytime, anywhere. The emergence of cloud rendering has almost swept the CG industry. It not only brought great changes to the CG industry, but also provided strong support. For the fast-paced modern, it is more convenient, which is why more and more people choose the to render that works.

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