Does the code run on the GPU after transferring data to the GPU using the gpuArray function？

I am a novice, I used the gpuArray function for transferring data to GPU , but the code run on the CPU. How can I get code to run on the GPU

Answer 1

[Matt J]

Any operations you do on a gpuArray object will be done on the GPU. Operations you do on other objects (not gpuArrays) will be executed on the CPU.

[lu zhang]

Thank you for your answer. I see what you mean. I have transfered the data to GPU and run the code. But my task manager showed that the CPU was working, and the utilization of GPU was 0. I'm very confused now.

[Walter Roberson]

GPUs can be quite fast.

Use gputimeit() to estimate speed.