A Tool for Modeling, Viewing, and Checking Distributed System
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Hardware Configuration with Dynamically-Queried Formal Models
Master’s Thesis Nr. 180 Systems Group, Department of Computer Science, ETH Zurich Hardware Configuration With Dynamically-Queried Formal Models by Daniel Schwyn Supervised by Reto Acherman Dr. David Cock Prof. Dr. Timothy Roscoe April 2017 – October 2017 Abstract Hardware is getting increasingly complex and heterogeneous. With different compo- nents having different views of the system, the traditional assumption of unique phys- ical addresses has become an illusion. To adapt to such hardware, an operating system (OS) needs to understand the complex address translation chains and be able to handle the presence of multiple address spaces. This thesis takes a recently proposed model that formally captures these aspects and applies it to hardware configuration in the Barrelfish OS. To this end, I present Sockeye, a domain specific language that uses the model to de- scribe hardware. I then show, that code relying on knowledge about the address spaces in a system can be statically generated from these specifications. Furthermore, the model is successfully applied to device management, showing that it can also be used to configure hardware at runtime. The implementation presented here does not rely on any platform specific code and it reduced the amount of such code in Barrelfish’s device manager by over 30%. Applying the model to further hardware configuration tasks is expected to have similar effects. i Acknowledgements First of all, I want to thank my advisers Timothy Roscoe, David Cock and Reto Acher- mann for their guidance and support. Their feedback and critical questions were a valuable contribution to this thesis. I’d also like to thank the rest of the Barrelfish team and other members of the Systems Group at ETH for the interesting discussions during meetings and coffee breaks. -
Tinkertool System 7 Reference Manual Ii
Documentation 0642-1075/2 TinkerTool System 7 Reference Manual ii Version 7.5, August 24, 2021. US-English edition. MBS Documentation 0642-1075/2 © Copyright 2003 – 2021 by Marcel Bresink Software-Systeme Marcel Bresink Software-Systeme Ringstr. 21 56630 Kretz Germany All rights reserved. No part of this publication may be redistributed, translated in other languages, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise, without the prior written permission of the publisher. This publication may contain examples of data used in daily business operations. To illustrate them as completely as possible, the examples include the names of individuals, companies, brands, and products. All of these names are fictitious and any similarity to the names and addresses used by an actual business enterprise is entirely coincidental. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. The publisher may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice. Make sure that you are using the correct edition of the publication for the level of the product. The version number can be found at the top of this page. Apple, macOS, iCloud, and FireWire are registered trademarks of Apple Inc. Intel is a registered trademark of Intel Corporation. UNIX is a registered trademark of The Open Group. Broadcom is a registered trademark of Broadcom, Inc. Amazon Web Services is a registered trademark of Amazon.com, Inc. -
® Apple® A/UXTM Release Notes Version 1.0 Ii APPLE COMPUTER, INC
.® Apple® A/UXTM Release Notes Version 1.0 Ii APPLE COMPUTER, INC. UNIBUS, VAX, VMS, and VT100 are trademarks of Digital © Apple Computer, Inc., 1986 Equipment Corporation. 20525 Mariani Ave. Cupertino, California 95014 Simultaneously published in the (408) 996-1010 United States and Canada. Apple, the Apple logo, APPLE'S SYSTEM V AppleTalk, ImageWriter, IMPLEMENTATION A/UX LaserWriter, Macintosh, RELEASE 1.0 RUNNING ON A MacTerminal, and ProDOS are MACINTOSH II COMPUTER registered trademarks of Apple HAS BEEN TESTED BY THE Computer, Inc. AT&T-IS' SYSTEM V VERIFICATION SUITE AND Apple Desktop Bus, A!UX, CONFORMS TO ISSUE 2 OF EtherTalk, and Finder are AT&T-IS' SYSTEM V trademarks of Apple Computer, INTERFACE DEFINITION Inc. BASE PLUS KERNEL Ethernet is a registered EXTENSIONS. trademark of Xerox Corporation. IBM is a registered trademark, and PC-DOS is a trademark, of International Business Machines, Inc. - ITC Avant Garde Gothic, ITC Garamond, and ITC Zapf Dingbats are registered trademarks of International Typeface Corporation. Microsoft and MS-DOS are registered trademarks of Microsoft Corporation. NFS is a registered trademark, and Sun Microsystems is a trademark, of Sun Microsystems, Inc. NuBus is a trademark of Texas Instruments. POSTSCRIPT is a registered trademark, and TRANSCRIPT is a trademark, of Adobe Systems Incorporated. UNIX is a registered trademark of AT&T Information Systems. Introduction to A/UX Release Notes, Version 1.0 These release notes contain late-breaking information about release 1.0 of the A!UXI'M software for the Apple® Macintosh® II computer. This package contains two kinds of materials: o Specific information that was not available in time to be incorporated into the printed manuals. -
Message Passing for Programming Languages and Operating Systems
Master’s Thesis Nr. 141 Systems Group, Department of Computer Science, ETH Zurich Message Passing for Programming Languages and Operating Systems by Martynas Pumputis Supervised by Prof. Dr. Timothy Roscoe, Dr. Antonios Kornilios Kourtis, Dr. David Cock October 7, 2015 Abstract Message passing as a mean of communication has been gaining popu- larity within domains of concurrent programming languages and oper- ating systems. In this thesis, we discuss how message passing languages can be ap- plied in the context of operating systems which are heavily based on this form of communication. In particular, we port the Go program- ming language to the Barrelfish OS and integrate the Go communi- cation channels with the messaging infrastructure of Barrelfish. We show that the outcome of the porting and the integration allows us to implement OS services that can take advantage of the easy-to-use concurrency model of Go. Our evaluation based on LevelDB benchmarks shows comparable per- formance to the Linux port. Meanwhile, the overhead of the messag- ing integration causes the poor performance when compared to the native messaging of Barrelfish, but exposes an easier to use interface, as shown by the example code. i Acknowledgments First of all, I would like to thank Timothy Roscoe, Antonios Kornilios Kourtis and David Cock for giving the opportunity to work on the Barrelfish OS project, their supervision, inspirational thoughts and critique. Next, I would like to thank the Barrelfish team for the discussions and the help. In addition, I would like to thank Sebastian Wicki for the conversations we had during the entire period of my Master’s studies. -
Ceph: Distributed Storage for Cloud Infrastructure
ceph: distributed storage for cloud infrastructure sage weil msst – april 16, 2012 outline ● motivation ● practical guide, demo ● overview ● hardware ● ● how it works installation ● failure and recovery ● architecture ● rbd ● data distribution ● libvirt ● rados ● ● rbd project status ● distributed file system storage requirements ● scale ● terabytes, petabytes, exabytes ● heterogeneous hardware ● reliability and fault tolerance ● diverse storage needs ● object storage ● block devices ● shared file system (POSIX, coherent caches) ● structured data time ● ease of administration ● no manual data migration, load balancing ● painless scaling ● expansion and contraction ● seamless migration money ● low cost per gigabyte ● no vendor lock-in ● software solution ● commodity hardware ● open source ceph: unified storage system ● objects ● small or large ● multi-protocol Netflix VM Hadoop ● block devices radosgw RBD Ceph DFS ● snapshots, cloning RADOS ● files ● cache coherent ● snapshots ● usage accounting open source ● LGPLv2 ● copyleft ● free to link to proprietary code ● no copyright assignment ● no dual licensing ● no “enterprise-only” feature set distributed storage system ● data center (not geo) scale ● 10s to 10,000s of machines ● terabytes to exabytes ● fault tolerant ● no SPoF ● commodity hardware – ethernet, SATA/SAS, HDD/SSD – RAID, SAN probably a waste of time, power, and money architecture ● monitors (ceph-mon) ● 1s-10s, paxos ● lightweight process ● authentication, cluster membership, critical cluster state ● object storage daemons (ceph-osd) -
System Software
PowerPoint Presentation to Accompany Chapter 5 System Software Visualizing Technology Copyright © 2014 Pearson Educaon, Inc. Publishing as Pren=ce Hall Objectives 1. Explain what an operating system does. 2. Compare the most common stand-alone operating systems. 3. Compare specialized operating systems. 4. Compare the most common network operating systems. 5. List and explain important disk utility software. 6. Identify the certifications and careers related to system software. Visualizing Technology Copyright © 2014 Pearson Educaon, Inc. Publishing as Pren=ce Hall Objective 1: Overview Who’s Being Bossy Now? 1. Discuss the job of the operating system 2. Discuss how the OS manages and controls hardware 3. Discuss how the OS interacts with software Key Terms § API (application § OS (operating system) programming interface) § PnP (Plug and Play) § Device driver § System software § GUI (graphical user interface) § Multitasking Visualizing Technology Copyright © 2014 Pearson Educaon, Inc. Publishing as Pren=ce Hall Operating System (OS) § System software § Interface to communicate with the hardware and software § A computer cannot run without an operating system installed Windows 8 interface Visualizing Technology Copyright © 2014 Pearson Educaon, Inc. Publishing as Pren=ce Hall Operating System Provides graphical user interface (GUI) Manages resources (mul=tasKing) Manage and controls hardware (PnP) Interacts with soMware (API) Visualizing Technology Copyright © 2014 Pearson Educaon, Inc. Publishing as Pren=ce Hall Which operating system is on your computer? Is it the latest version? If you have not upgraded, why not? If you could change the OS, would you? Which OS would you use instead? Visualizing Technology Copyright © 2014 Pearson Educaon, Inc. Publishing as Pren=ce Hall Objective 2: Overview Running the Show on Personal Computers 1. -
09-2Nd AWS Section 05
Architectural Woodwork Standards finishing 5s e c t i o n section 5 Finishing table of contents Introductory InformatIon complIance requIrements Introduction ......................................................................................... 110 General Purpose ............................................................................................... 110 Basic Considerations .................................................................... 117 Factory / Field Finishing ...................................................................... 110 Grade ..................................................................................... 117 Important Considerations .................................................................... 110 Classifications ................................................................. 117 Specifications ............................................................................... 110 Compliance Requirements .................................................... 117 Varying Costs ............................................................................... 110 Contract Documents .............................................................. 117 Intermixing Systems ..................................................................... 110 Aesthetic Compliance ............................................................ 117 Application .................................................................................... 110 Listing ................................................................................... -
Open Source Software
OPEN SOURCE SOFTWARE Product AVD9x0x0-0010 Firmware and version 3.4.57 Notes on Open Source software The TCS device uses Open Source software that has been released under specific licensing requirements such as the ”General Public License“ (GPL) Version 2 or 3, the ”Lesser General Public License“ (LGPL), the ”Apache License“ or similar licenses. Any accompanying material such as instruction manuals, handbooks etc. contain copyright notes, conditions of use or licensing requirements that contradict any applicable Open Source license, these conditions are inapplicable. The use and distribution of any Open Source software used in the product is exclusively governed by the respective Open Source license. The programmers provided their software without ANY WARRANTY, whether implied or expressed, of any fitness for a particular purpose. Further, the programmers DECLINE ALL LIABILITY for damages, direct or indirect, that result from the using this software. This disclaimer does not affect the responsibility of TCS. AVAILABILITY OF SOURCE CODE: Where the applicable license entitles you to the source code of such software and/or other additional data, you may obtain it for a period of three years after purchasing this product, and, if required by the license conditions, for as long as we offer customer support for the device. If this document is available at the website of TCS and TCS offers a download of the firmware, the offer to receive the source code is valid for a period of three years and, if required by the license conditions, for as long as TCS offers customer support for the device. TCS provides an option for obtaining the source code: You may obtain any version of the source code that has been distributed by TCS for the cost of reproduction of the physical copy. -
Digitalocean
UPDATE SAGE WEIL – RED HAT SC16 CEPH BOF – 2016.11.16 2 JEWEL APPAPP APPAPP HOST/VMHOST/VM CLIENTCLIENT RADOSGWRADOSGW RBDRBD CEPHCEPH FSFS LIBRADOSLIBRADOS AA bucket-based bucket-based AA reliable reliable and and fully- fully- AA POSIX-compliant POSIX-compliant AA library library allowing allowing RESTREST gateway, gateway, distributeddistributed block block distributeddistributed file file appsapps to to directly directly compatiblecompatible with with S3 S3 device,device, with with a a Linux Linux system,system, with with a a accessaccess RADOS, RADOS, andand Swift Swift kernelkernel client client and and a a LinuxLinux kernel kernel client client withwith support support for for QEMU/KVMQEMU/KVM driver driver andand support support for for C,C, C++, C++, Java, Java, FUSEFUSE Python,Python, Ruby, Ruby, andand PHP PHP AWESOME AWESOME NEARLY AWESOME AWESOME RADOSRADOS AWESOME AA reliable, reliable, autonomous, autonomous, distributed distributed object object store store comprised comprised of of self-healing, self-healing, self-managing, self-managing, intelligentintelligent storage storage nodes nodes 3 2016 = FULLY AWESOME OBJECT BLOCK FILE RGW RBD CEPHFS S3 and Swift compatible A virtual block device with A distributed POSIX file object storage with object snapshots, copy-on-write system with coherent versioning, multi-site clones, and multi-site caches and snapshots on federation, and replication replication any directory LIBRADOS A library allowing apps to direct access RADOS (C, C++, Java, Python, Ruby, PHP) RADOS A software-based, -
Cisco IOS Intrusion Prevention System Configuration Guide, Cisco IOS Release 15MT
Cisco IOS Intrusion Prevention System Configuration Guide, Cisco IOS Release 15MT Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883 © 2015 Cisco Systems, Inc. All rights reserved. CONTENTS CHAPTER 1 Configuring Cisco IOS Intrusion Prevention System 1 Finding Feature Information 1 Prerequisites for Configuring Cisco IOS IPS 2 Restrictions for Configuring Cisco IOS IPS 2 Information About Cisco IOS IPS 3 Cisco IOS IPS Overview 3 Security Device Event Exchange 4 Storing SDEE Events in the Buffer 4 Out-of-Order Packet Processing 4 Transparent Cisco IOS IPS Overview 4 Transparent Bridging Overview 4 Transparent and Non-Transparent IPS Devices Configured on the Same Device 5 Signature Definition File 5 Signature Microengines Overview and Lists of Supported Engines 6 Lists of Supported Signature Engines 6 Supported Cisco IOS IPS Signatures in the attack-drop.sdf File 9 How to Configure Cisco IOS IPS on a Device 24 Configuring Out-of-Order Packet Processing 24 Configuring a Bridge Group for Transparent Cisco IOS IPS 25 Troubleshooting Tips 28 What to Do Next 28 Installing Cisco IOS IPS on a New Device 28 Upgrading to the Latest Cisco IOS IPS Signature Definition File 30 Merging Built-In Signatures with the attack-drop.sdf File 33 Monitoring Cisco IOS IPS Signatures Through Syslog Messages or SDEE 36 Troubleshooting Tips 37 Troubleshooting Cisco IOS IPS 38 Interpreting Cisco IOS IPS System Messages 38 Cisco IOS Intrusion Prevention -
SLA-Aware Adaptive Mapping Scheme in Bigdata Distributed Storage Systems
SMA 2020, September 17-19, Jeju, Republic of Korea, S. Chum et al. SLA-Aware Adaptive Mapping Scheme in Bigdata Distributed Storage Systems Sopanhapich Chum Jerry Li Department of Computer Science Memory Solutions Lab. Dankook University Samsung Semiconductor Inc. Yongin, Korea San Jose, CA, USA [email protected] [email protected] Heekwon Park Jongmoo Choi Memory Solutions Lab. Department of Computer Science Samsung Semiconductor Inc. Dankook University San Jose, CA, USA Yongin, Korea [email protected] [email protected] ABSTRACT by 2025, with a compounded annual growth rate of 61% [23]. In As data are processed by diverse clients ranging from urgent time- addition, these data are processed instantly to extract information critical to best-effort, supporting different QoS (Quality of Service) for decision making, recommendation and autonomous control becomes a vital component in a distributed storage system. In this using various analytic models and frameworks [1, 8, 11, 20, 27, 30]. paper, we propose a novel SLA (Service Level Agreement)-aware We indeed live in Bigdata era [24]. adaptive mapping scheme that can differentiate between urgent Distributed storage (also called as Cloud storage) plays a key and normal clients based on their I/O requirements. The scheme ba- role in Bigdata era. There are various distributed storage systems sically divides storage into two regions, normal and urgent, which including GFS [14], HDFS [26], Ceph [2, 33], Azure Storage [16], makes it feasible to isolate urgent clients from normal ones. In Amazon S3 [22], Openstack Swift [18], Haystack [6], Lustre [35], addition, it changes the size of the isolated region in an adaptive GlusterFS [17] and so on. -
System 1 Software Datasheet Fundamental [Less Critical] System 1 Package Ordering 3071/01 System 1 Software (Perpetual License) Fundamental Package
Datasheet System 1 v19.1 System 1 represents the Bently Nevada flagship condition monitoring solution, which seamlessly integrates with our industry leading products including online and portable devices. System 1 provides scalability by adapting to the condition monitoring requirements at your facility, as well as flexibility by connecting to any Bently Nevada field devices. Our products are designed for diverse applications and equipment failure modes at industrial facilities. We offer flexible packages ranging from portable to comprehensive plant-wide condition monitoring. We recommend understanding your equipment and defining your operation and maintenance goals first. Then, choose the software package and field devices that help you achieve those goals. A successful condition monitoring program requires equipment knowledge including an understanding of failure modes and operational criticality, together with a cross functional team, process rigor, and enabling technologies. Bently Nevada offers flexible solutions ranging from product delivery and deployment services to supporting service agreements through which we partner with you to manage your condition monitoring program. Document: 108M5214 Rev. R System 1 Software Datasheet Fundamental [Less Critical] System 1 Package Ordering 3071/01 System 1 Software (Perpetual License) Fundamental Package Premium [Highly Critical] 3071/01-AA-BB-CC 3071/10 System 1 Software Premium Package A: Quantity of Display Clients 01 Single Client Package 3071/10-AA-BB-CC 05 Small Package [6 Clients]