在命令提示符（CMD）或PowerShell中，导航至 C:\Program Files\NVIDIA Corporation\NVSMI 并运行 nvidia-smi 。在输出中，您可以在“Driver Model”一栏看到当前状态。
WDDM stands for . Introduced in Windows Vista, it is the standard architecture for graphics drivers on the Windows operating system. Key Characteristics
.\nvidia-smi.exe
Is TCC Better Than WDDM? A Comprehensive Guide to NVIDIA GPU Modes tcc wddm better
WDDM is designed with the assumption that the GPU is driving a monitor. This leads to several limitations that TCC solves:
It introduces overhead, which can slow down dedicated, non-graphical computation. 2. What is TCC (Tesla Compute Cluster)?
(If you see "WDDM" – you are in slow mode) A Comprehensive Guide to NVIDIA GPU Modes WDDM
TCC is NVIDIA's specialized driver mode designed for compute cluster nodes. It transforms your GPU into a dedicated computational powerhouse by disabling all graphics functionality. In TCC mode, the GPU is completely devoted to computing tasks without any display obligations.
| Workload Type | WDDM Performance | TCC Performance | Improvement | |---------------|----------------|----------------|-------------| | Light Processing (256x256) | ~950 iterations/second | ~1,530 iterations/second | | | Heavy Processing (1024x1024) | ~98 iterations/second | ~103 iterations/second | ~5% faster |
Choose for 99% of other scenarios, including all 3D design, interactive rendering, and general Windows computing. What is TCC (Tesla Compute Cluster)
In CUDA programming, an application executes parallel code blocks on the GPU known as kernels. Every time a host CPU instructs a GPU to start a kernel, it encounters "launch overhead."
If you have ever installed an NVIDIA professional GPU (Quadro, Tesla, A100, RTX A-series) and opened NVIDIA SMI (System Management Interface) only to see the cryptic flags TCC or WDDM next to your driver type, you have likely asked one question:
: It completely disables the graphics side of the GPU. It bypasses the Windows graphics subsystem entirely.
If your primary goal is running non-graphical workloads, TCC offers distinct technical and performance advantages over WDDM. Kernel Launch Times and Overhead