ELC 2008 Agenda
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Linux and Electronics
Linux and Electronics Urs Lindegger Linux and Electronics Urs Lindegger Copyright © 2019-11-25 Urs Lindegger Table of Contents 1. Introduction .......................................................................................................... 1 Note ................................................................................................................ 1 2. Printed Circuits ...................................................................................................... 2 Printed Circuit Board design ................................................................................ 2 Kicad ....................................................................................................... 2 Eagle ..................................................................................................... 13 Simulation ...................................................................................................... 13 Spice ..................................................................................................... 13 Digital simulation .................................................................................... 18 Wings 3D ....................................................................................................... 18 User interface .......................................................................................... 19 Modeling ................................................................................................ 19 Making holes in Wings 3D ....................................................................... -
Google Android
Google Android 2008/3/10 NemusTech, Inc. Lee Seung Min 네무스텍㈜ Agenda Introduction Mobile Platform Overview Background : Current Linux Mobile Platform What is Android? Features Architecture Technical Detail Android SDK Porting Android to Real Target Future of Android A conceptual model for mobile software Software Stack Kernel the core of the SW (HW drivers, memory, filesystem, and process management) Middleware The set of peripheral software libraries (messaging and communication engines, WAP renders, codecs, etc) Application Execution Environment An application manager and set APIs UI framework A set of graphic components and an interaction framework Application Suite The set of core handset application ( IDLE screen, dialer, menu screen, contacts, calendar, etc) Mobile Platforms Feature Phone Vendor Platform : Mocha, PDK, WAVE, WISE, KX, etc...... Carrier Platform : SKTelecom TPAK, NTT i-Mode (WAP), Java, WIPI, BREW, etc…… 3rd Party Solution : TAT Cascade, Qualcomm uiOne Smart Phone MicroSoft Windows Mobile Nokia : Symbian, Series 60 Apple, iPhone – OSX 10.5 Leopard Linux Customers & Licensees Not all customers or licensees are shown Source:vendor data Smartphone OS Market Share by Region Smartphone OS market share by region, 2006 Source : Canalys Current Linux Mobile Platforms LiMo Foundation https://www.limofoundation.org/sf/sfmain/do/home TrollTech Qtopia GreenPhone Acquired by Nokia OpenMoko : GNU/Linux based software development platform http://www.openmoko.org , http://www.openmoko.com Linux -
Meeting Agenda 4:30 – 6:00 PM, Wednesday, Nov 2Nd, 2016 Lyons Town Hall
Meeting Agenda 4:30 – 6:00 PM, Wednesday, Nov 2nd, 2016 Lyons Town Hall I. Roll Call, Agenda, Minutes • Amendments to Agenda • Approve Minutes from Oct 19th • UEB Officers and Member Lead Areas • Upcoming Meetings - Nov 12, 2016 9 AM or 1 PM - Lyons Boards and Commissions Training - Lyons Nov 9. 8 AM - Northern Water Fall Water Users Meeting - Longmont, Best Western 1850 Industrial Cir. Dec 2nd - CAMU Fall Meeting - Fairfield & Woods in Denver, CO II. Audience Business III. Liaison Updates • Board of Trustees Update - MEAN meeting Report • Staff, Engineering Update - Honeywell Savings Gaurantee IV. Continued Business ● Town Utility Account tracking V. New Business ● Water/Wastewater Rate and CIP Study Presentation RG & Assoc. VI. Parking Lot • 2017 Utility FUnd Budget, Pipe Water rates for 2017 Budget, • Reserve/Rate Stabilization Funds • Wastewater Pretreatment Policy • LRAP INF 2.2.1 • Municipal Code Corrections UEB Meeting Minutes, 19 Oct 2016 Meeting Time and Location: Began at 4:30 at Town Hall. Attendance:, Aaron Caplan, Lee Hall, Coco Gordon, John Cowdry, Chuck Keim, Dan Reitz, Jay Stott Staff: Kyle Miller Liaisons: Guests: Amendments to Agenda: Welcomed Jay Stott as the newest member of the UEB. Previous Minutes: . Reviewed and modified Oct 5th Minutes under Water Wastewater CIP to add “Areas where there is no looping of the water mains need looping. It was emphasized to try and coordinate getting water, and wastewater done first in areas that need paving.” Aaron had not followed up with Parks and Rec to find out if they were budgeting for water usage. He would do so. Then approved minutes. -
Lguest a Journey of Learning the Linux Kernel Internals
Lguest A journey of learning the Linux kernel internals Daniel Baluta <[email protected]> What is lguest? ● “Lguest is an adventure, with you, the reader, as a Hero” ● Minimal 32-bit x86 hypervisor ● Introduced in 2.6.23 (October, 2007) by Rusty Russel & co ● Around 6000 lines of code ● “Relatively” “easy” to understand and hack on ● Support to learn linux kernel internals ● Porting to other architectures is a challenging task Hypervisor types make Preparation ● Guest ○ Life of a guest ● Drivers ○ virtio devices: console, block, net ● Launcher ○ User space program that sets up and configures Guests ● Host ○ Normal linux kernel + lg.ko kernel module ● Switcher ○ Low level Host <-> Guest switch ● Mastery ○ What’s next? Lguest overview make Guest ● “Simple creature, identical to the Host [..] behaving in simplified ways” ○ Same kernel as Host (or at least, built from the same source) ● booting trace (when using bzImage) ○ arch/x86/boot/compressed/head_32.S: startup_32 ■ uncompresses the kernel ○ arch/x86/kernel/head_32.S : startup_32 ■ initialization , checks hardware_subarch field ○ arch/x86/lguest/head_32.S ■ LGUEST_INIT hypercall, jumps to lguest_init ○ arch/x86/lguest/boot.c ■ once we are here we know we are a guest ■ override privileged instructions ■ boot as normal kernel, calling i386_start_kernel Hypercalls struct lguest_data ● second communication method between Host and Guest ● LHCALL_GUEST_INIT ○ hypercall to tell the Host where lguest_data struct is ● both Guest and Host publish information here ● optimize hypercalls ○ irq_enabled -
Lguest the Little Hypervisor
Lguest the little hypervisor Matías Zabaljáuregui [email protected] based on lguest documentation written by Rusty Russell note: this is a draft and incomplete version lguest introduction launcher guest kernel host kernel switcher don't have time for: virtio virtual devices patching technique async hypercalls rewriting technique guest virtual interrupt controller guest virtual clock hw assisted vs paravirtualization hybrid virtualization benchmarks introduction A hypervisor allows multiple Operating Systems to run on a single machine. lguest paravirtualization within linux kernel proof of concept (paravirt_ops, virtio...) teaching tool guests and hosts A module (lg.ko) allows us to run other Linux kernels the same way we'd run processes. We only run specially modified Guests. Setting CONFIG_LGUEST_GUEST, compiles [arch/x86/lguest/boot.c] into the kernel so it knows how to be a Guest at boot time. This means that you can use the same kernel you boot normally (ie. as a Host) as a Guest. These Guests know that they cannot do privileged operations, such as disable interrupts, and that they have to ask the Host to do such things explicitly. Some of the replacements for such low-level native hardware operations call the Host through a "hypercall". [ drivers/lguest/hypercalls.c ] high level overview launcher /dev/lguest guest kernel host kernel switcher Launcher main() some implementations /dev/lguest write → initialize read → run guest Launcher main [ Documentation/lguest/lguest.c ] The Launcher is the Host userspace program which sets up, runs and services the Guest. Just to confuse you: to the Host kernel, the Launcher *is* the Guest and we shall see more of that later. -
Concurrent Cilk: Lazy Promotion from Tasks to Threads in C/C++
Concurrent Cilk: Lazy Promotion from Tasks to Threads in C/C++ Christopher S. Zakian, Timothy A. K. Zakian Abhishek Kulkarni, Buddhika Chamith, and Ryan R. Newton Indiana University - Bloomington, fczakian, tzakian, adkulkar, budkahaw, [email protected] Abstract. Library and language support for scheduling non-blocking tasks has greatly improved, as have lightweight (user) threading packages. How- ever, there is a significant gap between the two developments. In previous work|and in today's software packages|lightweight thread creation incurs much larger overheads than tasking libraries, even on tasks that end up never blocking. This limitation can be removed. To that end, we describe an extension to the Intel Cilk Plus runtime system, Concurrent Cilk, where tasks are lazily promoted to threads. Concurrent Cilk removes the overhead of thread creation on threads which end up calling no blocking operations, and is the first system to do so for C/C++ with legacy support (standard calling conventions and stack representations). We demonstrate that Concurrent Cilk adds negligible overhead to existing Cilk programs, while its promoted threads remain more efficient than OS threads in terms of context-switch overhead and blocking communication. Further, it enables development of blocking data structures that create non-fork-join dependence graphs|which can expose more parallelism, and better supports data-driven computations waiting on results from remote devices. 1 Introduction Both task-parallelism [1, 11, 13, 15] and lightweight threading [20] libraries have become popular for different kinds of applications. The key difference between a task and a thread is that threads may block|for example when performing IO|and then resume again. -
How Free Become Open and Everything Else Under the Sun
This article was published as the featured article in the Journal Media/Culture here: http://journal.media-culture.org.au/0406/02_Coleman-Hill.php How Free Become Open and Everything Else Under the Sun Biella Coleman and Benjamin Mako Hill Abstract: Free and Open Source Software (FOSS) has been adopted as a political tool by leftist activists. At the same time, it has been embraced by large corporations to extend profits and has been criticized as an integral force in late capitalism. It has been adopted by members of the growing Commons movement as a model for limiting the power of capitalism. This essay attempts to confront the variability of these relationships through a cursory analysis of each field and through an look at FOSS philosophy and practice. It argues that Free Software exists as a politically agnostic field of practice--built on and through a broadly defined philosophy. It analyzes the way that this philosophy is well suited for the spread of FOSS technologies and its translation into the terms of radically different, even oppositional, social and political movements. Author Bios and Contact Information Benjamin "Mako" Hill is a Free and Open Source Software developer and advocate. He is a director of Software in the Public Interest and a member of the Debian project -- by most accounts the single largest Free Software project. In addition to volunteer and professional Free Software work, Hill writes and speaks extensively on issues of free software, intellectual property, collaboration, and technology. email: [email protected] Biella Coleman is a cultural anthropologist from the University of Chicago currently writing her dissertation on the ethical dynamics and political implications of the Free and Open Source movement. -
Proceedings of the Linux Symposium
Proceedings of the Linux Symposium Volume One June 27th–30th, 2007 Ottawa, Ontario Canada Contents The Price of Safety: Evaluating IOMMU Performance 9 Ben-Yehuda, Xenidis, Mostrows, Rister, Bruemmer, Van Doorn Linux on Cell Broadband Engine status update 21 Arnd Bergmann Linux Kernel Debugging on Google-sized clusters 29 M. Bligh, M. Desnoyers, & R. Schultz Ltrace Internals 41 Rodrigo Rubira Branco Evaluating effects of cache memory compression on embedded systems 53 Anderson Briglia, Allan Bezerra, Leonid Moiseichuk, & Nitin Gupta ACPI in Linux – Myths vs. Reality 65 Len Brown Cool Hand Linux – Handheld Thermal Extensions 75 Len Brown Asynchronous System Calls 81 Zach Brown Frysk 1, Kernel 0? 87 Andrew Cagney Keeping Kernel Performance from Regressions 93 T. Chen, L. Ananiev, and A. Tikhonov Breaking the Chains—Using LinuxBIOS to Liberate Embedded x86 Processors 103 J. Crouse, M. Jones, & R. Minnich GANESHA, a multi-usage with large cache NFSv4 server 113 P. Deniel, T. Leibovici, & J.-C. Lafoucrière Why Virtualization Fragmentation Sucks 125 Justin M. Forbes A New Network File System is Born: Comparison of SMB2, CIFS, and NFS 131 Steven French Supporting the Allocation of Large Contiguous Regions of Memory 141 Mel Gorman Kernel Scalability—Expanding the Horizon Beyond Fine Grain Locks 153 Corey Gough, Suresh Siddha, & Ken Chen Kdump: Smarter, Easier, Trustier 167 Vivek Goyal Using KVM to run Xen guests without Xen 179 R.A. Harper, A.N. Aliguori & M.D. Day Djprobe—Kernel probing with the smallest overhead 189 M. Hiramatsu and S. Oshima Desktop integration of Bluetooth 201 Marcel Holtmann How virtualization makes power management different 205 Yu Ke Ptrace, Utrace, Uprobes: Lightweight, Dynamic Tracing of User Apps 215 J. -
Cloud Accelerates Linux Adoption IDC ANALYZE the FUTURE
IDC White Paper | Cloud Accelerates Linux Adoption IDC ANALYZE THE FUTURE Sponsored by: Cloud Accelerates Linux Adoption Oracle Corp. IDC OPINION Authors: Ashish Nadkarni Cloud has become a crucial foundation for digital transformation (DX) initiatives and Gary Chen is shaping the IT strategy of enterprises today. Companies are extending their IT February 2018 infrastructure into the cloud for running business-critical applications, developing new applications, and delivering new cloud-based services. Applications are the lifeblood of modern enterprises. They are the foundation on which businesses maintain their existing revenue streams while examining ways to create new ones. A sound application strategy is a must for frms to be successful in expanding their competitive differentiation in the digital economy. Operating systems (OSs) provide a common foundational layer that enables IT to run current and new generations of applications in traditional IT environments, on its own private cloud, and in public clouds and utilize a variety of computing options such as bare metal, virtualization, and containerization. The increased reliance of IT on the cloud has accelerated the adoption of open source operating systems, Linux being the chief among them. Over the past decade, Linux has evolved to be a versatile platform for current- and new-generation applications — a platform that can run in the cloud or on-premises and can include open source tools and frameworks used in modern application development. Enterprise platform functionality and -
Operated by Triad National Security, LLC for the U.S. Department of Energy's NNSA Container Mythbusters
Operated by Triad National Security, LLC for the U.S. Department of Energy's NNSA Container Mythbusters Debunking the Nonsense, Dissecting the Misconceptions, and Distilling the Facts of High-Performance Containering Michael Jennings (@mej0) – [email protected] Platforms Team Lead, HPC Systems Group Los Alamos National Laboratory HPC/AI Advisory Council 2019 Swiss Conference HPCXXL 2019 Winter Meeting Lugano, Switzerland Wednesday, 3 April 2019 Operated by Triad National Security, LLC for the U.S. Department of Energy's NNSA UNCLASSIFIED LA-UR-19-XXXXX Los Alamos National Laboratory Introduction • Established in 1943 as “Site Y” of the Manhattan Project • Mission: To solve National Security challenges through Scientific Excellence • One of the largest science and technology institutes in the world, conducting multidisciplinary research in fields such as national security, space exploration, renewable energy, medicine, nanotechnology, and supercomputing. • Funded primarily by the Department of Energy, we also do extensive work for/with the Departments of Defense and Homeland Security, the Intelligence Community, et al. • Our strategy reflects US government priorities including nuclear security, intelligence, defense, emergency response, nonproliferation, counterterrorism, and more. • We help to ensure the safety, security, and effectiveness of the US nuclear stockpile. • Since 1992, the United States no longer performs full-scale testing of nuclear weapons. This has necessitated continuous, ongoing leadership in large-scale simulation capabilities -
User's Manual
rBOX610 Linux Software User’s Manual Disclaimers This manual has been carefully checked and believed to contain accurate information. Axiomtek Co., Ltd. assumes no responsibility for any infringements of patents or any third party’s rights, and any liability arising from such use. Axiomtek does not warrant or assume any legal liability or responsibility for the accuracy, completeness or usefulness of any information in this document. Axiomtek does not make any commitment to update the information in this manual. Axiomtek reserves the right to change or revise this document and/or product at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Axiomtek Co., Ltd. Trademarks Acknowledgments Axiomtek is a trademark of Axiomtek Co., Ltd. ® Windows is a trademark of Microsoft Corporation. Other brand names and trademarks are the properties and registered brands of their respective owners. Copyright 2014 Axiomtek Co., Ltd. All Rights Reserved February 2014, Version A2 Printed in Taiwan ii Table of Contents Disclaimers ..................................................................................................... ii Chapter 1 Introduction ............................................. 1 1.1 Specifications ...................................................................................... 2 Chapter 2 Getting Started ...................................... -
Demystifying Internet of Things Security Successful Iot Device/Edge and Platform Security Deployment — Sunil Cheruvu Anil Kumar Ned Smith David M
Demystifying Internet of Things Security Successful IoT Device/Edge and Platform Security Deployment — Sunil Cheruvu Anil Kumar Ned Smith David M. Wheeler Demystifying Internet of Things Security Successful IoT Device/Edge and Platform Security Deployment Sunil Cheruvu Anil Kumar Ned Smith David M. Wheeler Demystifying Internet of Things Security: Successful IoT Device/Edge and Platform Security Deployment Sunil Cheruvu Anil Kumar Chandler, AZ, USA Chandler, AZ, USA Ned Smith David M. Wheeler Beaverton, OR, USA Gilbert, AZ, USA ISBN-13 (pbk): 978-1-4842-2895-1 ISBN-13 (electronic): 978-1-4842-2896-8 https://doi.org/10.1007/978-1-4842-2896-8 Copyright © 2020 by The Editor(s) (if applicable) and The Author(s) This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. Open Access This book is licensed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made. The images or other third party material in this book are included in the book’s Creative Commons license, unless indicated otherwise in a credit line to the material.