Book Image

TensorFlow 1.x Deep Learning Cookbook

Book Image

TensorFlow 1.x Deep Learning Cookbook

Overview of this book

Deep neural networks (DNNs) have achieved a lot of success in the field of computer vision, speech recognition, and natural language processing. This exciting recipe-based guide will take you from the realm of DNN theory to implementing them practically to solve real-life problems in the artificial intelligence domain. In this book, you will learn how to efficiently use TensorFlow, Google’s open source framework for deep learning. You will implement different deep learning networks, such as Convolutional Neural Networks (CNNs), Recurrent Neural Networks (RNNs), Deep Q-learning Networks (DQNs), and Generative Adversarial Networks (GANs), with easy-to-follow standalone recipes. You will learn how to use TensorFlow with Keras as the backend. You will learn how different DNNs perform on some popularly used datasets, such as MNIST, CIFAR-10, and Youtube8m. You will not only learn about the different mobile and embedded platforms supported by TensorFlow, but also how to set up cloud platforms for deep learning applications. You will also get a sneak peek at TPU architecture and how it will affect the future of DNNs. By using crisp, no-nonsense recipes, you will become an expert in implementing deep learning techniques in growing real-world applications and research areas such as reinforcement learning, GANs, and autoencoders.
Table of Contents (15 chapters)
14
TensorFlow Processing Units

Components of TPUs

In all the deep learning models covered in this book, irrespective of the learning paradigm, three basic calculations were necessary: multiplication, addition, and application of an activation function.

The first two components are part of matrix multiplication: the weight matrix W needs to be multiplied to input matrix X, generally expressed as WTX; matrix multiplication is computationally expensive on a CPU, and though a GPU parallelizes the operation, still there is scope for improvement.

The TPU has a 65,536 8-bit integer matrix multiplier unit (MXU) that gives a peak throughput of 92 TOPS. The major difference between GPU and TPU multiplication is that GPUs contain floating point multipliers, while TPUs contain 8-bit integer multipliers. TPUs also contain a Unified Buffer (UB), 24 MB of SRAM that works as registers, and an Activation Unit (AU), which...