FAQ

 

 

FumeFX GPU simulation requirements

 

To use FumeFX GPU, enable the Use CUDA Acceleration option in the General Parameters dialog.

 

FumeFX relies on NVIDIA CUDA technology to run simulations directly on your NVIDIA graphics card.

AMD/ATI GPUs are not supported, as they do not provide CUDA capabilities.

 

For best performance, we recommend the following hardware:

• NVIDIA RTX 3090 (24 GB) – This is the baseline card for FumeFX GPU. It typically delivers around 2× faster simulation speeds compared to a high-end CPU, while also offering enough memory to handle complex simulations.
• NVIDIA RTX 4090 (24 GB) – A major performance step forward. You can expect approximately 3× to 5× faster simulations compared to CPU, along with the same generous 24 GB of VRAM for high-resolution grids.
• NVIDIA RTX 5090 (32 GB) – Roughly 30% faster than the RTX 4090, with 32 GB of memory. This additional VRAM allows even larger and more detailed simulations to fit entirely on the GPU.

 

It’s important to note that if your simulation exceeds the available GPU memory, FumeFX automatically switches to CPU mode. This ensures that even extremely detailed or memory-heavy simulations can still run reliably, though at the reduced speed of CPU computation.

 

 

FumeFX rendering with Redshift

 

Redshift has direct FumeFX volume rendering support. Alll uses needs to do is to use Arnold/Redshift Volume shader - Redshift will directly access FiumeFX and retrieve all the data required for rendering.

 

 

FumeFX rendering with VRay

 

V-Ray has never included direct support for rendering FumeFX volumes, so we developed the Arnold/V-Ray Volume Grid shader to provide a simple and efficient workflow. This custom FumeFX shader automates most of the setup that would normally be required and also enables rendering FumeFX volumes with Arnold GPU.