This question is closely related to the ResNet-152 Parallel computation question.
The ImageNet Large Scale Visual Recognition Challenge consists in classifying objects in images. It ran from 2010 to 2017 (and then morphed into an object localization challenge living indefinitely on Kaggle).
It was in the 2012 challenge that the deep convolutional network AlexNet made a dramatic breakthrough (achieving an error rate around ~16%, compared to the previous record of ~25%), an event widely considered to have launched the deep learning revolution of the 2010s.
A second major milestone was the introduction of residual networks (ResNets) by Microsoft researchers in 2015, including the 152-layered ResNet-152 used as a benchmark for this question.
In particular, we are referring to the ResNet-152 model executed in this TensorFlow benchmark, trained until it reaches top-1 error of <=28% and top-5 error <7% (these numbers indicates whether the score only counts the network's single best guess for the image label, or allows it to provide its top 5 best guesses).
Unless an experiment as outlined above is actually run, the question will resolve as ambiguous. Please condition your forecasts on that assumption.
Previous ILSVRC results can be found on image-net.org/challenges/LSVRC/201X/results by substituting X for the relevant year.
EFF summarises performance of the winning algorithm from each year's challenges. (Note that the dataset was significantly expanded in 2014, and possibly in other years, whereas this question refers specifically to the 2012 dataset.)
This page summarises the performance and training time of various models on ILSVRC 2012, using various GPUs. (Note that these models were written in Torch, whereas the benchmark referred in the question was written in Tensorflow.)