News
CPU+GPU hybrid rendering V-Ray Hybrid turned out!
Anyone who knows about rendering knows that the biggest problem of hybrid rendering is to make GPU and CPU rendering produce exactly the same calculation results. Because GPU code is difficult to debug, when the code crashes, as it is inevitable, it may only return a core dump,
There is no information about which part of the code caused the crash. In order to discover the reason, the developer will comment out each part of the code until the crashed BUG code is found. This process is cumbersome and time-consuming.
In order to make GPU debugging easier, Blago Taskov, a leading GPU developer, thought of using CUDA code calculations to work on the CPU, where he could use better debugging tools. Once he works, Blago can determine which line of code was made
Into the collapse. Therefore, there has been greater progress. Now V-Ray CUDA is mixed in CPU and GPU rendering, and produces the same result, V-Ray Hybrid is officially born!
V-Ray Hybrid benchmark platform
In order to improve the speed, dual-channel GPU and CPU were used to hybridize the rendering in V-Ray Hybrid, which was tested by Dabarti Studio, a customer of ChaosGroup.
Hardware Configuration
Rendering engine: V-Ray 3.6 CUDA
Resolution: 1920×1080
Noise threshold: 0.01
GPUs + CPUs rendering time: 4:27 (267 seconds)
GPU rendering time only: 5:03 (303 seconds), which is 13% longer than GPU + CPU hybrid rendering time
Only CPU rendering time: 26:25 (1585 seconds), 520% longer than GPU + CPU hybrid rendering time
Salt and pepper scene
Rendering engine: V-Ray 3.6 CUDA
Resolution: 1920×1080
Noise threshold: 0.01
GPUs + CPUs rendering time: 9:11 (551 seconds)
GPU rendering time only: 11:33 (693 seconds), which is 25% longer than GPU + CPU hybrid rendering time
Only CPU rendering time: 40:52 (2452 seconds), which is 354% longer than GPU + CPU hybrid rendering time
For these scenes, adding CPU can help reduce rendering time by 13% to 25%. This is a welcome speed increase, without letting these powerful CPUs idle.
Related news
If you have an interesting project and want to work together, please let us know!
Contact us
Follow us
