Specifications

Release 331 Quadro, NVS, Tesla, & GRID Drivers for Windows - Version 332.50 RN-WQ33250-01_v01 | 8
Chapter 02 : R ELEASE 331 D RIVER C HANGES
Using the WDDM Driver Model with Tesla GPU GOMs
Tesla GPU Operation Modes
Tesla K20X and K20 GPU Accelerators offer the ability to specify the GPU operation
mode using NV-SMI/NVML. (refer to: https://developer.nvidia.com/nvidia-
management-library-nvml).
By setting the GPU operation mode, developers can selectively turn off certain features
in the GPU to get the best performance per watt for certain workloads.
The following are the supported GOMs:
 Compute-Only: For running compute tasks only.
By default the Tesla K20X and K20 accelerator boards ship in this mode.
 Low-Double Precision: For graphics applications that don’t require high bandwidth
double precision.
This is recommended for workloads that are not sensitive to double precision but at
the same time need graphics capabilities.
 All On: This is recommended only when the workload needs full double precision as
well as graphics capabilities.
WDDM and TCC Driver Models
Along with the GPU operation mode, the developer needs to select the compatible driver
model for the Tesla K20X and K20.
 Tesla Compute Cluster (TCC): Optimized for running compute workloads.
 Windows Device Driver Model (WDDM): Designed for graphics application and not
recommended for compute workloads.