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Deep Dive into Apache MXNet on AWS
- 1. © 2017, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Radhika Ravirala | Solutions Architect | AWS August 17th, 2017 Deep Dive into Apache MXNet on AWS
- 2. Deep Learning isa coming-of-age for neural networks and is being used to solve previously intractable machine learning problems. “deep learning” trend in the past 10 years image understanding speech recognition natural language processing autonomy
- 3. Agenda • Applications • ApacheMXNet Overview • Framework Comparison • Mechanics of Apache MXNet • Walkthrough| MXNet Jupyter Notebook • Developer Tools and Resources
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- 6. Biometrics | MobileDevices
- 7. Apache MXNet |Overview
- 8. Apache MXNet Programmable PortableHigh Performance Near linear scaling across hundreds of GPUs Highly efficient models for mobile and IoT Simple syntax, multiple languages Most Open Best On AWS Optimized for deep learning on AWS Accepted into the Apache Incubator
- 9. AI Services AI Platform AIEngines Amazon Rekognition Amazon Polly Amazon Lex More to come in 2017 Amazon Machine Learning Amazon Elastic MapReduce Spark & SparkML More to come in 2017 Apache MXNet Caffe Theano KerasTorch CNTK Amazon AI: Democratized Artificial Intelligence TensorFlow P2 ECS Lambda AWS Greengrass FPGAEMR/Spark More to come in 2017 Hardware
- 10. Amazon Strategy |Apache MXNet Integrate with AWS Services Bring Scalable Deep Learning to AWS Services such as Amazon EMR, AWS Lambda and Amazon ECS. Foundation for AI Services AmazonAI API Services, Internal AI Research, Amazon Core AI Development Leverage the Community Community brings velocity and innovation with no single project owner or controller
- 11. Deep Learning usingMXNet @Amazon • Applied Research • Core Research • Alexa • Demand Forecasting • Risk Analytics • Search • Recommendations • AI Services | Rek, Lex, Polly • Q&A Systems • Supply Chain Optimization • Advertising • Machine Translation • Video Content Analysis • Robotics • Lots of Computer Vision.. • Lots of NLP/U.. *Teams are either actively evaluating, in development, or transitioning to scale production
- 12. Collaborations and Community 4thDL Framework in Popularity (Outpacing Torch, CNTK and Theano) Diverse Community (Spans Industry and Academia) 0 10,000 20,000 30,000 40,000 50,000 60,000 Yutian Li (Stanford) Nan Zhu (MSFT) Liang Depeng (Sun Yat-sen U.) Xingjian Shi (HKUST) Tianjun Xiao (Tesla) Chiyuan Zhang (MIT) Yao Wang (AWS) Jian Guo (TuSimple) Yizhi Liu (Mediav) Sandeep K. (AWS) Sergey Kolychev (Whitehat) Eric Xie (AWS) Tianqi Chen (UW) Mu Li (AWS) Bing Su (Apple) *As of 3/30/17 0 50 100 150 200 Torch CNTK DL4J Theano Apache MXNet Keras Caffe TensorFlow *As of 2/11/17
- 13. Deep Learning FrameworkComparison Apache MXNet TensorFlow Cognitive Toolkit Industry Owner N/A – Apache Community Google Microsoft Programmability Imperative and Declarative Declarative only Declarative only Language Support R, Python, Scala, Julia, Cpp. Javascript, Go, Matlab and more.. Python, Cpp. Experimental Go and Java Python, Cpp, Brainscript. Code Length| AlexNet (Python) 44 sloc 107 sloc using TF.Slim 214 sloc Memory Footprint (LSTM) 2.6GB 7.2GB N/A *sloc – source lines of code
- 14. 0 4 8 12 16 1 2 48 16 Ideal Inception v3 Resnet Alexnet 91% Efficiency Multi-GPU Scaling With MXNet
- 15. 0 64 128 192 256 1 2 48 16 32 64 128 256 Multi-GPU Scaling With MXNet
- 16. Ideal Inception v3 Resnet Alexnet 88% Efficiency 0 64 128 192 256 1 24 8 16 32 64 128 256 Multi-Machine Scaling With MXNet
- 17. Apache MXNet |The Basics
- 18. Apache MXNet |The Basics • NDArray: Manipulate multi-dimensional arrays in a command line paradigm (imperative). • Symbol: Symbolic expression for neural networks (declarative). • Module: Intermediate-level and high-level interface for neural network training and inference. • Loading Data: Feeding data into training/inference programs. • Mixed Programming: Training algorithms developed using NDArrays in concert with Symbols.
- 19. 0.2 -0.1 ... 0.7 Input Output 1 11 1 0 1 0 0 0 3 mx.sym.Pooling(data, pool_type="max", kernel=(2,2), stride=(2,2) lstm.lstm_unroll(num_lstm_layer, seq_len, len, num_hidden, num_embed) 4 2 2 0 4=Max 1 3 ... 4 0.2 -0.1 ... 0.7 mx.sym.FullyConnected(data, num_hidden=128) 2 mx.symbol.Embedding(data, input_dim, output_dim = k) Queen 4 2 2 0 2=Avg Input Weights cos(w, queen) = cos(w, king) - cos(w, man) + cos(w, woman) mx.sym.Activation(data, act_type="xxxx") "relu" "tanh" "sigmoid" "softrelu" Neural Art Face Search Image Segmentation Image Caption “People Riding Bikes” Bicycle, People, Road, Sport Image Labels Image Video Speech Text “People Riding Bikes” Machine Translation “Οι άνθρωποι ιππασίας ποδήλατα” Events mx.model.FeedForward model.fit mx.sym.SoftmaxOutput Anatomy of a Deep Learning Model mx.sym.Convolution(data, kernel=(5,5), num_filter=20) Deep Learning Models
- 20. import numpy asnp a = np.ones(10) b = np.ones(10) * 2 c = b * a d = c + 1 • Straightforward and flexible. • Take advantage of language native features (loop, condition, debugger). • E.g. Numpy, Matlab, Torch, … •Hard to optimize PROS CONSEasy to tweak in Python Imperative Programming
- 21. • More chancesfor optimization • Cross different languages • E.g. TensorFlow, Theano, Caffe •Less flexible PROS CONSC can share memory with D because C is deleted later A = Variable('A') B = Variable('B') C = B * A D = C + 1 f = compile(D) d = f(A=np.ones(10), B=np.ones(10)*2) A B 1 + X Declarative Programming
- 22. IMPERATIVE NDARRAY API DECLARATIVE SYMBOLIC EXECUTOR >>> importmxnet as mx >>> a = mx.nd.zeros((100, 50)) >>> b = mx.nd.ones((100, 50)) >>> c = a + b >>> c += 1 >>> print(c) >>> import mxnet as mx >>> net = mx.symbol.Variable('data') >>> net = mx.symbol.FullyConnected(data=net, num_hidden=128) >>> net = mx.symbol.SoftmaxOutput(data=net) >>> texec = mx.module.Module(net) >>> texec.forward(data=c) >>> texec.backward() NDArray can be set as input to the graph Mixed Programming Paradigm
- 23. Embed symbolic expressionsinto imperative programming texec = mx.module.Module(net) for batch in train_data: texec.forward(batch) texec.backward() for param, grad in zip(texec.get_params(), texec.get_grads()): param -= 0.2 * grad Mixed Programming Paradigm
- 24. • Fit thecore library with all dependencies into a single C++ source file • Easy to compile on any platform Amalgamation BlindTool by Joseph Paul Cohen, demo on Nexus 4 RUNS IN BROWSER WITH JAVASCRIPT
- 25. And now, eveneasier with Apple’s Core ML
- 26. Roadmap / Areasof Investment • Usability • Keras Integration / Gluon Interface • Apple’s Core ML Convertor • MinPy being merged (Dynamic Computation graphs, Std Numpy interface) • Documentation (installation, native documents, etc.) • Tutorials, examples | Jupyter Notebooks • Platform support (Linux, Windows, OS X, mobile …) • Language bindings (Python, C++, R, Scala, Julia, JavaScript …) • Sparse datatypes and LSTM performance improvements • Deploy your model your way: Lambda (+GreenGrass), Amazon EC2/Docker, Raspberry Pi
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- 28. Apache MXNet |Developer Tools and Resources
- 29. One-Click GPU orCPU Deep Learning AWS Deep Learning AMI Up to~40k CUDA cores Apache MXNet TensorFlow Theano Caffe Torch Keras Pre-configured CUDA drivers, MKL Anaconda, Python3 Ubuntu and Amazon Linux + AWS CloudFormation template + Container image
- 30. Application Examples |Jupyter Notebooks • https://github.com/dmlc/mxnet-notebooks • Basic concepts • NDArray - multi-dimensional array computation • Symbol - symbolic expression for neural networks • Module - neural network training and inference • Applications • MNIST: recognize handwritten digits • Check out the distributed training results • Predict with pre-trained models • LSTMs for sequence learning • Recommender systems • Train a state of the art Computer Vision model (CNN) • Lots more..
- 31. Developer Resources MXNet Resources: •MXNet Blog Post | AWS Endorsement • Read up on MXNet and Learn More: mxnet.io • MXNet Github Repo • MXNet Recommender Systems Talk | Leo Dirac Developer Resources: • Deep Learning AMI |Amazon Linux • Deep Learning AMI | Ubuntu • CloudFormation Template Instructions • Deep Learning Benchmark • MXNet on Lambda • MXNet on ECS/Docker • MXNet on Raspberry Pi | Image Detector using Inception Network
- 32. Apache MXNet |Jupyter Notebook Demo Training MNIST on MXNet
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