$4.$ Identify at least $5$ different device types $($e$.$g$.,$ AMD GPU, Intel CPU$)$ which Tensorflow can

support. For each of these devices, identify the sequence of lower steps a neural network must

go through before it can be run. Which devices and their corresponding backends support

training? Describe the advantages of using ahead$-$of$-$time $($AOT$)$ compilation versus justin$-$time $($JIT$)$ compilation in Tensorflow. Under what situations would I use one verses the

other