How to increase gpu usage?

Now I am doing simulation with reiforcement tool box by using GPU.

But, gpu usage can not become high.

I checked some points.

1, setting of gpu: gpu is connected to matlab.

2, It also declares ‘device’ and ‘gpu’.

But the usage doesn't go up, is there any other problem?

Answer 1

[Joss Knight]

To get GPU utilization high you need to give it a lot of high resolution work to do. Often RL problems, especially the ones in our examples, are low compute. Not all computation is suitable for GPU parallelization.

[ryunosuke tazawa]

Thanks to you, I was able to understand the GPU.

By the way, is there any way to shorten the simulation time?