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This article mainly introduces the computer rendering to eat graphics card or cpu, the article is very detailed, has a certain reference value, interested friends must read it!

Rendering is generally more CPU, graphics cards are not as important as CPU, but professional graphics cards and some A cards can also play an accelerated role; they also play a great role in 3D modeling, even more important than CPU.

The operating environment of this tutorial: windows7 system, Dell G3 computer.

Rendering is a very magical thing, such as an animated picture that looks real if it is rendered.

This is the rendering effect of the animation clip, and you can see that the second chapter of the picture is almost like an actual shot. in the early years, we can only see the rendering effect in some of the larger movies, "in order to render Avatar. Vita Digital used a server farm covering an area of 10000 square feet. There are 4000 servers with a total of 35000 processor cores. The average time to render a frame on a single machine is 2 hours, and the overall rendering time is 2880000 hours, which is equivalent to 328 years for a server. "

We generally think that the "awesome" effect often requires the special effects artist to describe one frame at a time, and one frame is a picture. In a movie, there are at least 24 frames per second. Imagine that even if we see the special effects picture for only ten seconds, for the special effects artist, that is 240 pictures! However, doing special effects is not the slowest, rendering special effects is the slowest. Even with a high-performance computer, it can take up to 48 hours to render a frame! In addition, rendering slows down the computer. If rendering is being carried out in the background, the special effects artist may not be able to work on this computer. For these reasons, coupled with uncontrollable factors such as computer crashes, special effects artists are often unable to finish their work within the time set by the producers because of rendering problems. Moreover, the human consumption, material consumption and power consumption needed to maintain computer rendering is also a large cost for the production company!

First, do you want to eat CPU or graphics card when rendering?

In fact, both are used at the same time, but there is some emphasis on them because of the different requirements of accuracy and efficiency.

The calculation of CPU is very accurate and can be used to calculate items with high precision.

If you describe CPU computing, you can think of it as a doctor-level calculator.

On the other hand, the computing unit of the graphics card is relatively simple, and it is suitable for relatively simple projects.

So graphics card computing can be understood as a calculator at the pupil level.

When the computer assigns tasks, it throws simple calculations to the graphics card, while CPU is responsible for complex calculations that the graphics card cannot afford.

Rendering is generally more CPU, graphics cards are not as important as CPU, but professional graphics cards and some A cards can also play an accelerated role, and play a great role in 3D modeling, even more important than CPU.

For example, the graphics card may only be responsible for several data addition, subtraction, multiplication and division operations, and the precision is limited, can only calculate an integer.

But CPU has to calculate equations, arrays, integrals and so on, which can be accurate to more than ten decimal places.

First of all, the game focuses on real-time restoration, plot experience, low requirements for color and type, or low precision.

So at the beginning of the design of the game, a lot of complex calculations were simplified or abandoned. The so-called 3D engine is this concept, which simplifies or decomposes a lot of complex operations, so as to enhance the graphics card computing.

The result of these simplifications is that it doesn't matter if the RGB deviation is a few points, while the reflection calculation, scattering, virtual focus, blur and so on are slightly deviated or weak. But these are also secondary to the integrity of the rhythm and plot of the movement.

For more demanding professional calculations, the above items are related to whether a certain calculation method is correct or not, even a few errors in a few data will cause major errors in other related calculation work, and all the accumulated errors will make the final result difficult to predict and control.

Therefore, even in professional computing, those calculations that rely heavily on verification cards, such as some 3D effect calculations based on CUDA, are mostly biased calculations. In the real commercial, professional film and television effects, only belong to the "reference answer", often need to carry out more post-adjustment and processing can be used. However, only those which rely entirely on CPU calculation are more reliable.

The above is all the contents of the article "eating graphics card or cpu in the computer". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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