I have some products that are written to take advantage of GPU-processing (Graphics Acceleration) if so configured.
- When I do not select Graphics Acceleration in the software, in Task Manager the process CPU load is ~2-3%.
- When I do select Graphics Acceleration in the software, the process CPU load is ~14%.
Which is very odd. In both cases GPUShark reports that no GPU processing power is used. The big mystery is why my CPU load rises significantly when I enable Graphics Acceleration in the program.
Everywhere I have looked tells me that the graphics hardware acceleration is enabled. The card is a Gainward 9500 GT (NVIDIA-based, Open GL 3.2.0, Open CL 1.0, CUDA 3.0.1). Old, I know by trouble-free, so far.
Any thoughts that will help me track down the problem? Is there any simple software which will test the GPU functionality (a load tester would not be necessary)?