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ROOT I/O Compression Improvements for HEP Analysis
EPJ Web of Conferences 245, 02017 (2020) https://doi.org/10.1051/epjconf/202024502017 CHEP 2019 ROOT I/O compression improvements for HEP analysis Oksana Shadura1;∗ Brian Paul Bockelman2;∗∗ Philippe Canal3;∗∗∗ Danilo Piparo4;∗∗∗∗ and Zhe Zhang1;y 1University of Nebraska-Lincoln, 1400 R St, Lincoln, NE 68588, United States 2Morgridge Institute for Research, 330 N Orchard St, Madison, WI 53715, United States 3Fermilab, Kirk Road and Pine St, Batavia, IL 60510, United States 4CERN, Meyrin 1211, Geneve, Switzerland Abstract. We overview recent changes in the ROOT I/O system, enhancing it by improving its performance and interaction with other data analysis ecosys- tems. Both the newly introduced compression algorithms, the much faster bulk I/O data path, and a few additional techniques have the potential to significantly improve experiment’s software performance. The need for efficient lossless data compression has grown significantly as the amount of HEP data collected, transmitted, and stored has dramatically in- creased over the last couple of years. While compression reduces storage space and, potentially, I/O bandwidth usage, it should not be applied blindly, because there are significant trade-offs between the increased CPU cost for reading and writing files and the reduces storage space. 1 Introduction In the past years, Large Hadron Collider (LHC) experiments are managing about an exabyte of storage for analysis purposes, approximately half of which is stored on tape storages for archival purposes, and half is used for traditional disk storage. Meanwhile for High Lumi- nosity Large Hadron Collider (HL-LHC) storage requirements per year are expected to be increased by a factor of 10 [1]. -
Yutaka Oiwa. "Implementation of a Fail-Safe ANSI C Compiler"
Implementation of a Fail-Safe ANSI C Compiler 安全な ANSI C コンパイラの実装手法 Doctoral Dissertation 博士論文 Yutaka Oiwa 大岩 寛 Submitted to Department of Computer Science, Graduate School of Information Science and Technology, The University of Tokyo on December 16, 2004 in partial fulfillment of the requirements for the degree of Doctor of Philosophy Abstract Programs written in the C language often suffer from nasty errors due to dangling pointers and buffer overflow. Such errors in Internet server programs are often ex- ploited by malicious attackers to “crack” an entire system, and this has become a problem affecting society as a whole. The root of these errors is usually corruption of on-memory data structures caused by out-of-bound array accesses. The C lan- guage does not provide any protection against such out-of-bound access, although recent languages such as Java, C#, Lisp and ML provide such protection. Never- theless, the C language itself should not be blamed for this shortcoming—it was designed to provide a replacement for assembly languages (i.e., to provide flexible direct memory access through a light-weight high-level language). In other words, lack of array boundary protection is “by design.” In addition, the C language was designed more than thirty years ago when there was not enough computer power to perform a memory boundary check for every memory access. The real prob- lem is the use of the C language for current casual programming, which does not usually require such direct memory accesses. We cannot realistically discard the C language right away, though, because there are many legacy programs written in the C language and many legacy programmers accustomed to the C language and its programming style. -
Arxiv:2004.10531V1 [Cs.OH] 8 Apr 2020
ROOT I/O compression improvements for HEP analysis Oksana Shadura1;∗ Brian Paul Bockelman2;∗∗ Philippe Canal3;∗∗∗ Danilo Piparo4;∗∗∗∗ and Zhe Zhang1;y 1University of Nebraska-Lincoln, 1400 R St, Lincoln, NE 68588, United States 2Morgridge Institute for Research, 330 N Orchard St, Madison, WI 53715, United States 3Fermilab, Kirk Road and Pine St, Batavia, IL 60510, United States 4CERN, Meyrin 1211, Geneve, Switzerland Abstract. We overview recent changes in the ROOT I/O system, increasing per- formance and enhancing it and improving its interaction with other data analy- sis ecosystems. Both the newly introduced compression algorithms, the much faster bulk I/O data path, and a few additional techniques have the potential to significantly to improve experiment’s software performance. The need for efficient lossless data compression has grown significantly as the amount of HEP data collected, transmitted, and stored has dramatically in- creased during the LHC era. While compression reduces storage space and, potentially, I/O bandwidth usage, it should not be applied blindly: there are sig- nificant trade-offs between the increased CPU cost for reading and writing files and the reduce storage space. 1 Introduction In the past years LHC experiments are commissioned and now manages about an exabyte of storage for analysis purposes, approximately half of which is used for archival purposes, and half is used for traditional disk storage. Meanwhile for HL-LHC storage requirements per year are expected to be increased by factor 10 [1]. arXiv:2004.10531v1 [cs.OH] 8 Apr 2020 Looking at these predictions, we would like to state that storage will remain one of the major cost drivers and at the same time the bottlenecks for HEP computing. -
WWW-Based Collaboration Environments with Distributed Tool Services
WWWbased Collab oration Environments with Distributed To ol Services Gail E Kaiser Stephen E Dossick Wenyu Jiang Jack Jingshuang Yang SonnyXiYe Columbia University Department of Computer Science Amsterdam Avenue Mail Co de New York NY UNITED STATES fax kaisercscolumbiaedu CUCS February Abstract Wehave develop ed an architecture and realization of a framework for hyp ermedia collab oration environments that supp ort purp oseful work by orchestrated teams The hyp ermedia represents all plausible multimedia artifacts concerned with the collab orative tasks at hand that can b e placed or generated online from applicationsp ecic materials eg source co de chip layouts blueprints to formal do cumentation to digital library resources to informal email and chat transcripts The environment capabilities include b oth internal hyp ertext and external link server links among these artifacts which can b e added incrementally as useful connections are discovered pro jectsp ecic hyp ermedia search and browsing automated construction of artifacts and hyp erlinks according to the semantics of the group and individual tasks and the overall pro cess workow application of to ols to the artifacts and collab orativework for geographically disp ersed teams We present a general architecture for what wecallhyp ermedia subwebs and imp osition of groupspace services op erating on shared subwebs based on World Wide Web technology which could b e applied over the Internet andor within an organizational intranet We describ e our realization in OzWeb which -
Building and Installing Xen 4.X and Linux Kernel 3.X on Ubuntu and Debian Linux
Building and Installing Xen 4.x and Linux Kernel 3.x on Ubuntu and Debian Linux Version 2.3 Author: Teo En Ming (Zhang Enming) Website #1: http://www.teo-en-ming.com Website #2: http://www.zhang-enming.com Email #1: [email protected] Email #2: [email protected] Email #3: [email protected] Mobile Phone(s): +65-8369-2618 / +65-9117-5902 / +65-9465-2119 Country: Singapore Date: 10 August 2013 Saturday 4:56 A.M. Singapore Time 1 Installing Prerequisite Software sudo apt-get install ocaml-findlib sudo apt-get install bcc bin86 gawk bridge-utils iproute libcurl3 libcurl4-openssl-dev bzip2 module-init-tools transfig tgif texinfo texlive-latex-base texlive-latex-recommended texlive-fonts-extra texlive-fonts-recommended pciutils-dev mercurial build-essential make gcc libc6-dev zlib1g-dev python python-dev python-twisted libncurses5-dev patch libvncserver-dev libsdl-dev libjpeg62-dev iasl libbz2-dev e2fslibs-dev git-core uuid-dev ocaml libx11-dev bison flex sudo apt-get install gcc-multilib sudo apt-get install xz-utils libyajl-dev gettext sudo apt-get install git-core kernel-package fakeroot build-essential libncurses5-dev 2 Linux Kernel 3.x with Xen Virtualization Support (Dom0 and DomU) In this installation document, we will build/compile Xen 4.1.3-rc1-pre and Linux kernel 3.3.0-rc7 from sources. sudo apt-get install aria2 aria2c -x 5 http://www.kernel.org/pub/linux/kernel/v3.0/testing/linux-3.3-rc7.tar.bz2 tar xfvj linux-3.3-rc7.tar.bz2 cd linux-3.3-rc7 Page 1 of 25 (C) 2013 Teo En Ming (Zhang Enming) 3 Configuring the Linux kernel cp /boot/config-3.0.0-12-generic .config make oldconfig Accept the defaults for new kernel configuration options by pressing enter. -
Important Notice Regarding Software
Important Notice Regarding Software The software package installed in this product includes software licensed to Onkyo & Pioneer Corporation (hereinafter, called “O&P Corporation”) directly or indirectly by third party developers. Please be sure to read this notice regarding such software. Notice Regarding GNU GPL/LGPL-applicable Software This product includes the following software that is covered by GNU General Public License (hereinafter, called "GPL") or by GNU Lesser General Public License (hereinafter, called "LGPL"). O&P Corporation notifies you that, according to the attached GPL/LGPL, you have right to obtain, modify, and redistribute software source code for the listed software. ソフトウェアに関する重要なお知らせ 本製品に搭載されるソフトウェアには、オンキヨー & パイオニア株式会社(以下「弊社」とします)が 第三者より直接的に又は間接的に使用の許諾を受けたソフトウェアが含まれております。これらのソフト ウェアに関する本お知らせを必ずご一読くださいますようお願い申し上げます。 GNU GPL / LGPL 適用ソフトウェアに関するお知らせ 本製品には、以下の GNU General Public License(以下「GPL」とします)または GNU Lesser General Public License(以下「LGPL」とします)の適用を受けるソフトウェアが含まれております。 お客様は添付の GPL/LGPL に従いこれらのソフトウェアソースコードの入手、改変、再配布の権利があ ることをお知らせいたします。 Package List パッケージリスト alsa-conf-base glibc-gconv alsa-conf glibc-gconv-utf-16 alsa-lib glib-networking alsa-utils-alsactl gstreamer1.0-libav alsa-utils-alsamixer gstreamer1.0-plugins-bad-aiff alsa-utils-amixer gstreamer1.0-plugins-bad-bluez alsa-utils-aplay gstreamer1.0-plugins-bad-faac avahi-autoipd gstreamer1.0-plugins-bad-mms base-files gstreamer1.0-plugins-bad-mpegtsdemux base-passwd gstreamer1.0-plugins-bad-mpg123 bluez5 gstreamer1.0-plugins-bad-opus busybox gstreamer1.0-plugins-bad-rawparse -
UG1144 (V2020.1) July 24, 2020 Revision History
See all versions of this document PetaLinux Tools Documentation Reference Guide UG1144 (v2020.1) July 24, 2020 Revision History Revision History The following table shows the revision history for this document. Section Revision Summary 07/24/2020 Version 2020.1 Appendix H: Partitioning and Formatting an SD Card Added a new appendix. 06/03/2020 Version 2020.1 Chapter 2: Setting Up Your Environment Added the Installing a Preferred eSDK as part of the PetaLinux Tool section. Chapter 4: Configuring and Building Added the PetaLinux Commands with Equivalent devtool Commands section. Chapter 6: Upgrading the Workspace Added new sections: petalinux-upgrade Options, Upgrading Between Minor Releases (2020.1 Tool with 2020.2 Tool) , Upgrading the Installed Tool with More Platforms, and Upgrading the Installed Tool with your Customized Platform. Chapter 7: Customizing the Project Added new sections: Creating Partitioned Images Using Wic and Configuring SD Card ext File System Boot. Chapter 8: Customizing the Root File System Added the Appending Root File System Packages section. Chapter 10: Advanced Configurations Updated PetaLinux Menuconfig System. Chapter 11: Yocto Features Added the Adding Extra Users to the PetaLinux System section. Appendix A: Migration Added Tool/Project Directory Structure. UG1144 (v2020.1) July 24, 2020Send Feedback www.xilinx.com PetaLinux Tools Documentation Reference Guide 2 Table of Contents Revision History...............................................................................................................2 -
OSS Disclosure Document OSS Licenses Used in RN AIVI 1
OSS Disclosure Document Date: 08-10-2017 OSS Licenses used in RN_AIVI CM-CI1/PJ-CB Page 1 Project 1 Overview .................................................. 12 2 OSS Licenses used in the project .......................... 13 3 Package details for OSS Licenses usage .................... 14 AES - Advanced Encryption Standard – 1.0 ..................... 14 Alsa Libraries - 1.0.29 ...................................... 14 Alsa Plugins - 1.0.29 ........................................ 14 Alsa Utils - 1.0.29 .......................................... 14 APMD - 3.2.2 ................................................. 15 ATK - 2.8.0 .................................................. 15 Attr - 2.4.47 ................................................ 15 Audio File Library - 0.2.7 ................................... 15 Avahi - 0.6.31 ............................................... 15 Bash - 3.2.48 .............................................. 15 BidiReferenceCpp - 26 ...................................... 15 Bison - 2.5.2., 3.0.2, 3.0.4 ............................... 16 Blktrace - 1.0.5 ........................................... 16 BlueZ - 4.101, 5.33 ........................................ 16 BPSTL ...................................................... 16 Btrfs-progs – 4.1.2 ........................................ 16 Busybox - 1.23.2 ........................................... 16 Bzip2 - 1.0.6 .............................................. 16 Cairo Vector Graphics Library - 1.12.14, 1.12.16, 1.14.2 ... 17 Cairo-Pixman - 0.30.2,0.32.6 .............................. -
LISTSERV 16.0 Site Manager's Operations Manual
Information in this document is subject to change without notice. Companies, names, and data used in examples herein are fictitious unless otherwise noted. L-Soft does not endorse or approve the use of any of the product names or trademarks appearing in this document. Permission is granted to copy this document, at no charge and in its entirety, if the copies are not used for commercial advantage, the source is cited, and the present copyright notice is included in all copies. Recipients of such copies are equally bound to abide by the present conditions. Prior written permission is required for any commercial use of this document, in whole or in part, and for any partial reproduction of the contents of this document exceeding 50 lines of up to 80 characters, or equivalent. The title page, table of contents, and index, if any, are not considered to be part of the document for the purposes of this copyright notice, and can be freely removed if present. Copyright 2009 L-Soft international, Inc. All Rights Reserved Worldwide. LISTSERV is a registered trademark licensed to L-Soft international, Inc. ListPlex, CataList, and EASE are service marks of L-Soft international, Inc. LSMTP is a registered trademark of L-Soft international, Inc. The Open Group, Motif, OSF/1 UNIX and the “X” device are registered trademarks of The Open Group in the United State and other countries. Digital, Alpha AXP, AXP, Digital UNIX, OpenVMS, HP, and HP-UX are trademarks of Hewlett- Packard Company in the United States and other countries. Microsoft, Windows, Windows 2000, Windows XP, and Windows NT are registered trademarks of Microsoft Corporation in the United States and other countries. -
Cognitive Abilities, Interfaces and Tasks: Effects on Prospective Information Handling in Email
Cognitive Abilities, Interfaces and Tasks: Effects on Prospective Information Handling in Email by Jacek Stanisław Gwizdka A thesis submitted in conformity with the requirements for the degree of Doctor of Philosophy Graduate Department of Mechanical and Industrial Engineering University of Toronto © Copyright by Jacek Gwizdka 2004 “Cognitive Abilities, Interfaces and Tasks: Effects on Prospective Information Handling in Email” Degree of Doctor of Philosophy, 2004 Jacek Stanisław Gwizdka Department of Mechanical and Industrial Engineering, University of Toronto Abstract This dissertation is focused on new email user interfaces that may improve awareness and handling of task-laden messages in the inbox. The practical motivation for this research was to help email users process messages more effectively. A field study was conducted to examine email practices related to handling messages that refer to pending tasks. Individual differences in message handling style were observed, with one group of users transferring such messages out of their email pro- grams to other applications (e.g., calendars), while the other group kept prospective messages in email and used the inbox as a reminder of future events. Two novel graphical user interfaces were designed to facilitate monitoring and retrieval of prospective information from email messages. The TaskView interface displayed task- laden messages on a two-dimensional grid (with time on the horizontal axis). The WebT- askMail interface retained the two-dimensional grid, but extended the representation of pending tasks (added distinction between events and to-do's with deadlines), a vertical date reading line, and more space for email message headers. ii Two user studies were conducted to test hypothesized benefits of the new visual repre- sentations and to examine the effects of different levels of selected cognitive abilities on task-laden message handling performance. -
Unix Quickref.Dvi
Summary of UNIX commands Table of Contents df [dirname] display free disk space. If dirname is omitted, 1. Directory and file commands 1994,1995,1996 Budi Rahardjo ([email protected]) display all available disks. The output maybe This is a summary of UNIX commands available 2. Print-related commands in blocks or in Kbytes. Use df -k in Solaris. on most UNIX systems. Depending on the config- uration, some of the commands may be unavailable 3. Miscellaneous commands du [dirname] on your site. These commands may be a commer- display disk usage. cial program, freeware or public domain program that 4. Process management must be installed separately, or probably just not in less filename your search path. Check your local documentation or 5. File archive and compression display filename one screenful. A pager similar manual pages for more details (e.g. man program- to (better than) more. 6. Text editors name). This reference card, obviously, cannot de- ls [dirname] scribe all UNIX commands in details, but instead I 7. Mail programs picked commands that are useful and interesting from list the content of directory dirname. Options: a user's point of view. 8. Usnet news -a display hidden files, -l display in long format 9. File transfer and remote access mkdir dirname Disclaimer make directory dirname The author makes no warranty of any kind, expressed 10. X window or implied, including the warranties of merchantabil- more filename 11. Graph, Plot, Image processing tools ity or fitness for a particular purpose, with regard to view file filename one screenfull at a time the use of commands contained in this reference card. -
Improving Compression-Ratio in Backup
Institutionen för systemteknik Department of Electrical Engineering Examensarbete Improving compression ratio in backup Examensarbete utfört i Informationskodning/Bildkodning av Mattias Zeidlitz Författare Mattias Zeidlitz LITH-ISY-EX--12/4588--SE Linköping 2012 TEKNISKA HÖGSKOLAN LINKÖPINGS UNIVERSITET Department of Electrical Engineering Linköpings tekniska högskola Linköping University Institutionen för systemteknik S-581 83 Linköping, Sweden 581 83 Linköping Improving compression-ratio in backup ............................................................................ Examensarbete utfört i Informationskodning/Bildkodning vid Linköpings tekniska högskola av Mattias Zeidlitz ............................................................. LITH-ISY-EX--12/4588--SE Presentationsdatum Institution och avdelning 2012-06-13 Institutionen för systemteknik Publiceringsdatum (elektronisk version) Department of Electrical Engineering Datum då du ämnar publicera exjobbet Språk Typ av publikation ISBN (licentiatavhandling) Svenska Licentiatavhandling ISRN LITH-ISY-EX--12/4588--SE x Annat (ange nedan) x Examensarbete Serietitel (licentiatavhandling) C-uppsats D-uppsats Engelska Rapport Serienummer/ISSN (licentiatavhandling) Antal sidor Annat (ange nedan) 58 URL för elektronisk version http://www.ep.liu.se Publikationens titel Improving compression ratio in backup Författare Mattias Zeidlitz Sammanfattning Denna rapport beskriver ett examensarbete genomfört på Degoo Backup AB i Stockholm under våren 2012. Syftet var att designa en kompressionssvit