ARM Cortex - A Series for Android Enabling the Next Billion Devices

Transcription

1 ARM Cortex - A Series for Android Enabling the Next Billion Devices 1

2 Cortex-A Series Enables the Android Platform 700,000+ Android Services Client Devices Per Day Devices from phones and tablets to netbook s and TV s running Android on ARM Cortex-A Processors Scalable, feature-rich architecture High-performance, low-power cores Roadmap for power and performance Robust developer ecosystem ARM commitment to software Content & Services Enables Platform Success 2

3 Android Tracks ARMv7 from 2.2 Released w/ Source Released w/o Source Roadmap Release In Development 2.2 (Froyo) ARMv7 optimized 2.1 Flash Player 10.1 (Mainline) DalvikARM/Thumb2 JIT V8 JavaScript engine Full ARMv7 for NDK NEON for 2D Cortex-A8 High performance Low power Single thread efficiency 3.x (Honeycomb) ARMv7 SMP Renderscript/LLVM for ARMv7 Incremental ARMv7 optimizations 2.3 (Gingerbread) ARMv7 SMP First dual core launch device Major NDKr5 enhancements VP8 and WebMintegration ARM Linux kernel Incremental ARMv7 improvements Cortex-A9 Multi-core performance ARMv7,SMP enables Cortex-A5 Scalable compatibility 4.0 (ICS) Unifies OS across TV, Phone and Tablet Merges 2.3 and 3.x WebPintegrtation Native OpenMAXAL API Continued performance optimizations for ARMv7 and ARM SMP Big.LITTLE Scalable Performance Cortex-A15 Next gen performance Future

4 ARMv7 NEON for 2D Graphics Skia 2D Graphics package used throughout Android Android Chrome browser and UI framework Skia optimized using ARMv7 NEON intrinsics and assembly 30% performance uplift on UI use cases 10%-30% performance uplift on browser use cases Some Skia routines see as much as 500% lift from NEON Android Skia2D Graphics Chrome Chrome OS 4

5 V8 JavaScript JIT Targets ARMv7 V8 first released for ARM as part of Android 2.2 VERY fast pure JIT generating native ARM code Continuous improvement by both ARM and Google Google Android 4.0 V8 Benchmarks Nexus S ~220% over 2.3 Galaxy Nexus ~550% over Nexus S Google V8 Benchmark Suite Run on the same dual core Cortex-A9 SoC* (relative performance to Android 2.3) 1x >2x Relative Score Android 2.3 Android 3.0 V >4x V8 Branch is >4x faster on ARM than in Android 2.3! *Production dual core Cortex-A9 5

6 WebM Open Media Project Launched May of 2010 to address lack of open MM standard VP8 video codec licensed under a BSD-style, royalty-free license The Vorbis open source audio codec A container format based on a subset of the Matroska media container Newly announced WebP image format Extensively ARM optimized Over 10,000 lines of ARM NEON code at launch MHz MHz Required for 720p Decode on ARM Cortex-A9 + NEON Cortex-A9 with NEON enables WebM720p decode with 1MB L2 cache, ffmpeg 11-March-2011, Google libvpx, Test files from YouTube, Decode to YUV420 format in RAM 6

7 WebM Leverages ARMv7 SMP Recent WebMVP8 source updates improve threading capability ~45% gain on dual thread version running on production Cortex-A9 silicon Decoder results on quad-core 1 thread: 14,8 fps 2 threads: 21,5 fps 3 threads: 24 fps 4 threads: 26 fps Shields 720p 1024kbps stream with 2 partitions One thread Two threads fps for 1Mbps 720p video fps for 720p 1Kbps Source: ARM benchmarking of opensourcelibvpxcodec running on 500MHz Cortex-A9 testchipwith 200MHz DDR

8 ARMv7 / Thumb-2 Accelerates Dalvik Dalvik Java Virtual Machine Interpreter support for ARMv7T Instructions/co-procs for interpreter UXFB, TBB VFP, NEON Tracing JIT Focus on hot code paths Increases performance by 2-5x Minimal code bloat approx 100K Thumb-2 code generation Support for VFPv2/3 Google ARM Dalvik JIT Benchmark Results 8

9 ARMv7 for Renderscript Compute Renderscript for high performance 3D and compute code Augments traditional framework API s and native OpenGL ES 3D API (Shader Support) Renderscript Code (C99 Like Language) LLVM Compute API Renderscript binary (LLVM Intermediary) OpenGL ES 2.0 Driver Mali GPU Compute (Native Code) ARMv7 CPU (VFP, NEON) JIT to Native ARMv7 Instructions Compute accelerated with ARM LLVM CPU code-generation VFP enabled in Honeycomb NEON implementation in ICS 3D graphics accelerated with GPU through OpenGL ES Sits atop of OpenGL ES 2.0 today Fully supported and optimized for ARM Mali-400 GPU s 9

10 Linaro Enabling Android To make open source development easier by delivering a common software foundation, across multiple distributions and vertical segments, deployed by the industry's leading OEM, MNO and Semiconductor companies (Linaro is a Not For Profit UK company) 10

11 How Linaro Benefits Android Linaro benefits all parts of the Android anatomy VP8 Flash Mobile Mobile Browser AIR Webkit V8 JavaScript Engine SKIA 2D Graphics Android Middleware Dalvik Linux Kernel LLVM LLVM VP8 Android Tablet Chrome Browser Flash Webkit V8 JavaScript Engine SKIA 2D Graphics Android Middleware Dalvik Linux Kernel LLVM LLVM VP8 Google TV Chrome Browser Flash Webkit V8 JavaScript Engine SKIA 2D Graphics Android Middleware Dalvik Linux Kernel LLVM LLVM Google VP8 Chrome OS Chrome Browser Flash Webkit V8 JavaScript Engine SKIA 2D Graphics Linux Middleware X Windows Linux Kernel LLVM Create Android Linaro Platform Align working group output to support Linaro adoption in Android Help time to market through streamlined Integration and Validation Reduce Android vs. Linux differences 11

12 Linaro Unified Kernel for Android Linaro Linux kernel and tools for use with Android Android Linaro Evaluation Builds (LEB s) Optimized and validated, with latest and greatest OSs Includes infrastructure support for build and test Early Linaro tool chain benchmark results show advantages relative to Google 4.4 tool chain 12

13 Application Ecosystem "Fundamentally we believe that what has happened over the last couple of years is there has been a shift from a battle of devices to a war of ecosystems. Stephen Elop, CEO Nokia, speaking at Qualcomm Uplinq 2011 User experience increasingly tied to applications Used with permission FLURRY 13

14 Enabling the Application Ecosystem Android application developers employ a range of technologies enabled by the underlying ARM architecture Complex Anatomy of an Android Application 14

15 Native Development Kit (NDK) for ARM NDK is a comprehensive tool kit to enable application developers to write directly for the ARM processor ARM Improvements General highlights Improved performance and code density with GCC Optimizations for Cortex-A9 Support for VFPv3 New NativeActivityfeature eliminates need to write Java Addition of default C++ STL New API s Input subsystem, sensor data Windows, surface subsystem OpenSL ES Audio API Access to APK graphics assets EGL library to create and manage OpenGL ES textures and services Enhancements in the r5 and above release Android applications can be written in Java, native ARM code, or a combination of the two 15

16 ARM Native Code Advantage Average 4x faster performance, 30x when using NEON Flexible language and tool support Improvement x times Benefit of Native Code - Scimark 2 Nexus One Droid Access to processor features, such as Thumb-2 and NEON Fast reuse of existing and cross platform software IP Access to a range of 3 rd party application middleware MFLOPS Linpack (scaled to 1GHz) x 2.4 X faster Dalvik VM 40.0 Nativec Cortex-A9 Tegra Nexus One Motorola Droid 16

17 ARM Native Code Examples GAME (sample) ARM Native Lib Neon Optimized Significant impact on a range of applications Games Media Players Browsers VoIP clients All 3D OpenGL ES content utilizes ARM code 17

18 Application Middleware Box2D physics engine Bullet physics engine Droidpush Mobile push API Chipmunk - physics engine MoVend Payment API Farseer -Physics Engine Open Dynamic Engine aicharts Charting API Cloak 2D game engine Alyjoin P2P API Many many more 18

19 Application Middleware Examples Marmalade (f.k.a. AirPlaySDK) 3 rd party commercial developer kit Cross platform with single ARM binary Extensive API set and functionality to accelerate development Application Code ARM Library Native libraries ARMv7 + NEON Java libraries ARM developer library NEON enabled functions JNI and native C API Open source, including examples To be released via ARM Solution Center for Android 19

20 DS-5 for Android App Development Roadmap from ARM for Android app development Integrates with Eclipse alongside Android SDK Professional native debugging DS-5 includes NDK compatible gdbserver for native device debug DS-5 Eclipse Compiler IDE Debugger Streamline Device Configuration Database Simulation Hardware Debug Streamline performance analyzer* Timelines with performance counters Call path and time-based profiling * Integrated kernel module required 20

21 Application Profiling Example ARM DS-5 Streamline Profiling View of Kwaak3 on Android 2.3 Processor Utilization Cache Utilization CPU Load per core Kwaak3 threads Kwaak3 running on dual core ARM Cortex-A9 ODROID-A Thread processor affinity ARM DS-5 Application Edition 21

22 Enabling Application Developers Google Android SDK + NDK ARM DS-5 Develop Debug Optimize Development Targets Enables Better development platform Faster development cycle Better quality content 22

23 Supporting the Android Ecosystem The ARM Solution Center for Android continues to grow the ecosystem of content and services Participating SCA companies sharing their expertise, solutions and services SCA growing to include Resources for building devices Development tools Blogs Porting guides White papers Developer libraries 23 New SCA Landing Page, Launching Soon

24 Summary ARMv7 Cortex-A series processors enable Android service platform Processor performance, scalability and roadmap ARM committed to software Platform to application developers Ready for the next 100,000,000 Android devices on ARM 24