title: Cupy not using GPU in colab
body: <p>I use cupy to accelerarte np computation. It is faster. However, after using cupy for large matrix computation, I query !nvidia-smi, and found GPU-Util is 0%. Does this mean cupy is not using colab gpu? If so, why do we need to change runtime to GPU?<a href="https://i.stack.imgur.com/yGlPr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yGlPr.png" alt="enter image description here" /></a></p>