This image-recognition neural net can be trained from 1.2 million pictures in the time it takes to make a cup o' tea

Just 90 seconds, it's claimed, provided a) you have 512 Nvidia V100 GPUs and b) er, no need for accuracy

The shortest time for training a neural network using the popular ImageNet dataset has been slashed again, it is claimed, from the previously held record of four minutes to just one and a half."