Book Image

Distributed Machine Learning with Python

By : Guanhua Wang
Book Image

Distributed Machine Learning with Python

By: Guanhua Wang

Overview of this book

Reducing time cost in machine learning leads to a shorter waiting time for model training and a faster model updating cycle. Distributed machine learning enables machine learning practitioners to shorten model training and inference time by orders of magnitude. With the help of this practical guide, you'll be able to put your Python development knowledge to work to get up and running with the implementation of distributed machine learning, including multi-node machine learning systems, in no time. You'll begin by exploring how distributed systems work in the machine learning area and how distributed machine learning is applied to state-of-the-art deep learning models. As you advance, you'll see how to use distributed systems to enhance machine learning model training and serving speed. You'll also get to grips with applying data parallel and model parallel approaches before optimizing the in-parallel model training and serving pipeline in local clusters or cloud environments. By the end of this book, you'll have gained the knowledge and skills needed to build and deploy an efficient data processing pipeline for machine learning model training and inference in a distributed manner.
Table of Contents (17 chapters)
1
Section 1 – Data Parallelism
6
Section 2 – Model Parallelism
11
Section 3 – Advanced Parallelism Paradigms

Understanding model decomposition and distillation

The third technique we introduce here is called model decomposition and distillation.

At a high level, model decomposition tries to split the giant model into small subnets and thus minimize the communication among those subnets.

For each DNN, we will further reduce its size by performing model pruning, which is also called model distillation.

Now, we will talk about each technique in detail.

Model decomposition

One SOTA approach for model decomposition is sensAI, which can almost eliminate communication among the subnets split from the giant base model. Basically, we assume we have a fully trained model.

For the ease of illustration, we assume the DNN base model here is just a convolutional neural network (CNN) and the fully trained base model is used for image classification between cats and dogs.

The following diagram depicts how we split this model into disconnected subnets:

Figure 8...