Book Image

Learn CUDA Programming

By : Jaegeun Han, Bharatkumar Sharma
Book Image

Learn CUDA Programming

By: Jaegeun Han, Bharatkumar Sharma

Overview of this book

<p>Compute Unified Device Architecture (CUDA) is NVIDIA's GPU computing platform and application programming interface. It's designed to work with programming languages such as C, C++, and Python. With CUDA, you can leverage a GPU's parallel computing power for a range of high-performance computing applications in the fields of science, healthcare, and deep learning. </p><p> </p><p>Learn CUDA Programming will help you learn GPU parallel programming and understand its modern applications. In this book, you'll discover CUDA programming approaches for modern GPU architectures. You'll not only be guided through GPU features, tools, and APIs, you'll also learn how to analyze performance with sample parallel programming algorithms. This book will help you optimize the performance of your apps by giving insights into CUDA programming platforms with various libraries, compiler directives (OpenACC), and other languages. As you progress, you'll learn how additional computing power can be generated using multiple GPUs in a box or in multiple boxes. Finally, you'll explore how CUDA accelerates deep learning algorithms, including convolutional neural networks (CNNs) and recurrent neural networks (RNNs). </p><p> </p><p>By the end of this CUDA book, you'll be equipped with the skills you need to integrate the power of GPU computing in your applications.</p>

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Table of Contents (18 chapters)
Title Page
Title Page
Copyright and Credits
Copyright and Credits
Learn CUDA Programming
Dedication
Dedication
About Packt
About Packt
Why subscribe?
Contributors
Contributors
About the authors
About the reviewers
Packt is searching for authors like you
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Introduction to CUDA Programming
Introduction to CUDA Programming
The history of high-performance computing
Technical requirements 
Hello World from CUDA
Vector addition using CUDA
Error reporting in CUDA
Data type support in CUDA
Summary
2
CUDA Memory Management
CUDA Memory Management
Technical requirements 
NVIDIA Visual Profiler
Global memory/device memory
Shared memory
Read-only data/cache
Registers in GPU
Pinned memory
Unified memory
GPU memory evolution
Summary
3
CUDA Thread Programming
CUDA Thread Programming
Technical requirements
CUDA threads, blocks, and the GPU
Understanding CUDA occupancy
Understanding parallel reduction
Identifying the application's performance limiter
Minimizing the CUDA warp divergence effect
Performance modeling and balancing the limiter
Warp-level primitive programming
Cooperative Groups for flexible thread handling
Loop unrolling in the CUDA kernel
Atomic operations
Low/mixed precision operations
Summary
4
Kernel Execution Model and Optimization Strategies
Kernel Execution Model and Optimization Strategies
Technical requirements
Kernel execution with CUDA streams
Pipelining the GPU execution
The CUDA callback function
CUDA streams with priority
Kernel execution time estimation using CUDA events
CUDA dynamic parallelism
Grid-level cooperative groups
CUDA kernel calls with OpenMP
Multi-Process Service
Kernel execution overhead comparison
Summary 
5
CUDA Application Profiling and Debugging
CUDA Application Profiling and Debugging
Technical requirements
Profiling focused target ranges in GPU applications
Profiling with NVTX
Visual profiling against the remote machine
Debugging a CUDA application with CUDA error
Asserting local GPU values using CUDA assert
Debugging a CUDA application with Nsight Visual Studio Edition
Debugging a CUDA application with Nsight Eclipse Edition
Debugging a CUDA application with CUDA-GDB
Runtime validation with CUDA-memcheck
Profiling GPU applications with Nsight Systems
Profiling a kernel with Nsight Compute
Summary
6
Scalable Multi-GPU Programming
Scalable Multi-GPU Programming
Technical requirements 
Solving a linear equation using Gaussian elimination
GPUDirect peer to peer
Brief introduction to MPI
GPUDirect RDMA
CUDA streams
Additional tricks
Summary
7
Parallel Programming Patterns in CUDA
Parallel Programming Patterns in CUDA
Technical requirements
Matrix multiplication optimization
Convolution
Prefix sum (scan)
Compact and split
N-body
Histogram calculation
Quicksort in CUDA using dynamic parallelism
Radix sort
Summary
8
Programming with Libraries and Other Languages
Programming with Libraries and Other Languages
Linear algebra operation using cuBLAS
Mixed-precision operation using cuBLAS
cuRAND for parallel random number generation
cuFFT for Fast Fourier Transformation in GPU
NPP for image and signal processing with GPU
Writing GPU accelerated code in OpenCV
Writing Python code that works with CUDA
NVBLAS for zero coding acceleration in Octave and R
CUDA acceleration in MATLAB
Summary
9
GPU Programming Using OpenACC
GPU Programming Using OpenACC
Technical requirements
OpenACC directives
Asynchronous programming in OpenACC
Additional important directives and clauses
Summary
10
Deep Learning Acceleration with CUDA
Deep Learning Acceleration with CUDA
Technical requirements
Fully connected layer acceleration with cuBLAS 
Activation layer with cuDNN
Softmax and loss functions in cuDNN/CUDA
Convolutional neural networks with cuDNN
Recurrent neural network optimization
Profiling deep learning frameworks
Summary
Appendix
Appendix
Useful nvidia-smi commands
WDDM/TCC mode in Windows
Performance modeling 
Exploring container-based development
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Technical requirements 

A Linux PC with a modern NVIDIA GPU (Pascal architecture onward) is required for this chapter, along with all of the necessary GPU drivers and the CUDA Toolkit (10.0 onward) installed. If you are unsure of your GPU's architecture, please visit the NVIDIA GPU's site at https://developer.nvidia.com/cuda-gpus and confirm it. This chapter's code is also available on GitHub at https://github.com/PacktPublishing/Learn-CUDA-Programming.

The sample code examples for this chapter have been developed and tested with version 10.1 of CUDA Toolkit. However, it is recommended to use the latest CUDA version or higher.

In the next section, we will introduce you to the Visual Profiler, which will help us to analyze our applications. We will also look at how well it runs on the GPU. 

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