Mojtaba Barzegari
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A Comparative Evaluation of Matlab, Octave, R, and Julia on Maya 1 Introduction
A Comparative Evaluation of Matlab, Octave, R, and Julia on Maya Sai K. Popuri and Matthias K. Gobbert* Department of Mathematics and Statistics, University of Maryland, Baltimore County *Corresponding author: [email protected], www.umbc.edu/~gobbert Technical Report HPCF{2017{3, hpcf.umbc.edu > Publications Abstract Matlab is the most popular commercial package for numerical computations in mathematics, statistics, the sciences, engineering, and other fields. Octave is a freely available software used for numerical computing. R is a popular open source freely available software often used for statistical analysis and computing. Julia is a recent open source freely available high-level programming language with a sophisticated com- piler for high-performance numerical and statistical computing. They are all available to download on the Linux, Windows, and Mac OS X operating systems. We investigate whether the three freely available software are viable alternatives to Matlab for uses in research and teaching. We compare the results on part of the equipment of the cluster maya in the UMBC High Performance Computing Facility. The equipment has 72 nodes, each with two Intel E5-2650v2 Ivy Bridge (2.6 GHz, 20 MB cache) proces- sors with 8 cores per CPU, for a total of 16 cores per node. All nodes have 64 GB of main memory and are connected by a quad-data rate InfiniBand interconnect. The tests focused on usability lead us to conclude that Octave is the most compatible with Matlab, since it uses the same syntax and has the native capability of running m-files. R was hampered by somewhat different syntax or function names and some missing functions. -
XAMARIN.FORMS for BEGINNERS ABOUT ME Tom Soderling Sr
XAMARIN.FORMS FOR BEGINNERS ABOUT ME Tom Soderling Sr. Mobile Apps Developer @ Polaris Industries; Ride Command Xamarin.Forms enthusiast DevOps hobbyist & machine learning beginner 4 year XCMD Blog: https://tomsoderling.github.io GitHub: https://github.com/TomSoderling Twitter: @tomsoderling How Deep Pickster Spaniel Is It? THE PLAN • Introduction: Why, What, and When • Overview of Xamarin.Forms Building Blocks • Building a Xamarin.Forms UI in XAML • Data Binding • View Customization • Next Steps & Resources • Please ask any questions that come up! THE PLAN • Introduction: Why, What, and When • Overview of Xamarin.Forms Building Blocks • Building a Xamarin.Forms UI in XAML • Data Binding • View Customization • Next Steps & Resources INTRODUCTION : WHY • WET: the soggy state of mobile app development • Write Everything Twice INTRODUCTION : WHY • WET: the soggy state of mobile app development • Write Everything Twice INTRODUCTION : WHAT • What is Xamarin.Forms? • Cross-platform UI framework • Platforms: • Mobile: iOS 8 and up, Android 4.0.3 (API 15) • Desktop: Windows 10 UWP, MacOS, WFP • Samsung Smart Devices: Tizen INTRODUCTION : WHAT • Brief History: • May 2011, Xamarin founded • MonoTouch and Mono for Android using MonoDevelop IDE • February 2013, release of Xamarin 2.0 • Xamarin Studio IDE & integration with Visual Studio • Renamed to Xamarin.Android and Xamarin.iOS • May 2014, Xamarin.Forms released as part of Xamarin 3 • February 24 2016, Xamarin acquired by Microsoft • Owned, actively developed on, and supported by Microsoft • Free -
Web API and Microsoft Azure
[ 1 ] www.it-ebooks.info Building Web Services with Microsoft Azure Quickly develop scalable, REST-based applications or services and learn how to manage them using Microsoft Azure Alex Belotserkovskiy Stephen Kaufman Nikhil Sachdeva professional expertise distilled PUBLISHING BIRMINGHAM - MUMBAI www.it-ebooks.info Building Web Services with Microsoft Azure Copyright © 2015 Packt Publishing All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews. Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the authors, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book. Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information. First published: May 2015 Production reference: 1220515 Published by Packt Publishing Ltd. Livery Place 35 Livery Street Birmingham B3 2PB, UK. ISBN 978-1-78439-837-8 www.packtpub.com www.it-ebooks.info Credits Authors Copy Editors Alex Belotserkovskiy Pranjali -
End to End Azure and Xamarin.Forms
End-to-End Native Mobile Apps with C# and Xamarin James Montemagno Developer Evangelist, Xamarin [email protected] motzcod.es @JamesMontemagno DESIGN – DEVELOP - INTEGRATE TEST MONITOR LEARN iOS C# UI Android C# UI Windows C# UI Shared C# Mobile Shared C# codebase • 100% native API access • High performance Microsoft.Phone Microsoft.Networking Windows.Storage Windows.Foundation Microsoft.Devices System.Net System System.IO System.Linq System.Xml System.Data System.Windows System.Numerics System.Core System.ServiceModel MapKit UIKit iBeacon CoreGraphics CoreMotion System.Net System System.IO System.Linq System.Xml System.Data System.Windows System.Numerics System.Core System.ServiceModel Text-to-speech ActionBar Printing Framework Renderscript NFC System.Net System System.IO System.Linq System.Xml System.Data System.Windows System.Numerics System.Core System.ServiceModel .NET IL + JIT Compile C# and Link .APK Runs Natively Bindings Xamarin.iOS does full Ahead Of Time Xamarin.Android takes advantage of (AOT) compilation to produce an ARM Just In Time (JIT) compilation on the binary for Apple’s App Store. Android device. • • • • • ✓Always Up-to-Date • • • • • • iOS C# UI Android C# UI Windows C# UI Shared UI Code Shared C# Backend Shared C# Backend Traditional Xamarin With Xamarin.Forms: Approach More code-sharing, all native ✓ 40+ Pages, layouts, and controls (Build from code behind or XAML) Shared UI Code ✓ Two-way data binding ✓ Navigation Shared C# Backend ✓ Animation API ✓ Dependency Service ✓ Messaging Center Pages Content MasterDetail -
Microsoft Mobility and Security for Enterprise Architects
Microsoft Mobility What IT architects need to know about mobility with Microsoft cloud services and Security for and platforms Enterprise Architects This topic is 1 of 4 in a series 1 2 3 4 Enable productivity and collaboration from anywhere while protecting data and applications Microsoft provides broad support for mobile productivity with support for applications and rich features for controlling access to your organization s assets. Microsoft mobile apps for business Developing your own mobile apps Microsoft produces a number of business class mobile apps for Use the Mobile Apps feature of Azure App Service to build engaging productivity. See page two for featured applications. iOS, Android, and Windows apps or cross-platform Xamarin or Cordova (Phonegap) apps for your customers and business. With an Office 365 for business subscription, you get mobile apps that help you get more done from your favorite device while keeping your Broadcast push with customer data secured. Use Intune Mobile Application Management to apply segmentation additional security when using these mobile applications. Enterprise single sign-on with Active Directory Autoscale to support millions of devices Skype for Business, Yammer, OneNote, and more apps for business Apps can work offline and sync are also available. Get the full list of apps and learn how to set them Social integration with Facebook, up on your devices. Twitter, Google Dynamics CRM also includes apps for phones and tablets. Cloud App Security for SaaS apps Mobile access to on-prem applications Microsoft Cloud App Security is a comprehensive service that provides Microsoft Azure Active Directory Application Proxy lets you publish deeper visibility, comprehensive controls, and improved protection for applications, such as web-based apps inside your private network and your cloud applications. -
Introduction to GNU Octave
Introduction to GNU Octave Hubert Selhofer, revised by Marcel Oliver updated to current Octave version by Thomas L. Scofield 2008/08/16 line 1 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 8 6 4 2 -8 -6 0 -4 -2 -2 0 -4 2 4 -6 6 8 -8 Contents 1 Basics 2 1.1 What is Octave? ........................... 2 1.2 Help! . 2 1.3 Input conventions . 3 1.4 Variables and standard operations . 3 2 Vector and matrix operations 4 2.1 Vectors . 4 2.2 Matrices . 4 1 2.3 Basic matrix arithmetic . 5 2.4 Element-wise operations . 5 2.5 Indexing and slicing . 6 2.6 Solving linear systems of equations . 7 2.7 Inverses, decompositions, eigenvalues . 7 2.8 Testing for zero elements . 8 3 Control structures 8 3.1 Functions . 8 3.2 Global variables . 9 3.3 Loops . 9 3.4 Branching . 9 3.5 Functions of functions . 10 3.6 Efficiency considerations . 10 3.7 Input and output . 11 4 Graphics 11 4.1 2D graphics . 11 4.2 3D graphics: . 12 4.3 Commands for 2D and 3D graphics . 13 5 Exercises 13 5.1 Linear algebra . 13 5.2 Timing . 14 5.3 Stability functions of BDF-integrators . 14 5.4 3D plot . 15 5.5 Hilbert matrix . 15 5.6 Least square fit of a straight line . 16 5.7 Trapezoidal rule . 16 1 Basics 1.1 What is Octave? Octave is an interactive programming language specifically suited for vectoriz- able numerical calculations. -
A Tutorial on Reliable Numerical Computation
A tutorial on reliable numerical computation Paul Zimmermann Dagstuhl seminar 17481, Schloß Dagstuhl, November 2017 The IEEE 754 standard First version in 1985, first revision in 2008, another revision for 2018. Standard formats: binary32, binary64, binary128, decimal64, decimal128 Standard rounding modes (attributes): roundTowardPositive, roundTowardNegative, roundTowardZero, roundTiesToEven p Correct rounding: required for +; −; ×; ÷; ·, recommended for other mathematical functions (sin; exp; log; :::) 2 Different kinds of arithmetic in various languages fixed precision arbitrary precision real double (C) GNU MPFR (C) numbers RDF (Sage) RealField(p) (Sage) MPFI (C) Boost Interval (C++) RealIntervalField(p) (Sage) real INTLAB (Matlab, Octave) RealBallField(p) (Sage) intervals RIF (Sage) libieeep1788 (C++) RBF (Sage) Octave Interval (Octave) libieeep1788 is developed by Marco Nehmeier GNU Octave Interval is developed by Oliver Heimlich 3 An example from Siegfried Rump Reference: S.M. Rump. Gleitkommaarithmetik auf dem Prüfstand [Wie werden verifiziert(e) numerische Lösungen berechnet?]. Jahresbericht der Deutschen Mathematiker-Vereinigung, 118(3):179–226, 2016. a p(a; b) = 21b2 − 2a2 + 55b4 − 10a2b2 + 2b Evaluate p at a = 77617, b = 33096. 4 Rump’s polynomial in the C language #include <stdio.h> TYPE p (TYPE a, TYPE b) { TYPE a2 = a * a; TYPE b2 = b * b; return 21.0*b2 - 2.0*a2 + 55*b2*b2 - 10*a2*b2 + a/(2.0*b); } int main() { printf ("%.16Le\n", (long double) p (77617.0, 33096.0)); } 5 Rump’s polynomial in the C language: results $ gcc -DTYPE=float rump.c && ./a.out -4.3870930862080000e+12 $ gcc -DTYPE=double rump.c && ./a.out 1.1726039400531787e+00 $ gcc -DTYPE="long double" rump.c && ./a.out 1.1726039400531786e+00 $ gcc -DTYPE=__float128 rump.c && ./a.out -8.2739605994682137e-01 6 The MPFR library A reference implementation of IEEE 754 in (binary) arbitrary precision in the C language. -
Gretl User's Guide
Gretl User’s Guide Gnu Regression, Econometrics and Time-series Allin Cottrell Department of Economics Wake Forest university Riccardo “Jack” Lucchetti Dipartimento di Economia Università di Ancona November, 2005 Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation (see http://www.gnu.org/licenses/fdl.html). Contents 1 Introduction 1 1.1 Features at a glance ......................................... 1 1.2 Acknowledgements ......................................... 1 1.3 Installing the programs ....................................... 2 2 Getting started 4 2.1 Let’s run a regression ........................................ 4 2.2 Estimation output .......................................... 6 2.3 The main window menus ...................................... 7 2.4 The gretl toolbar ........................................... 10 3 Modes of working 12 3.1 Command scripts ........................................... 12 3.2 Saving script objects ......................................... 13 3.3 The gretl console ........................................... 14 3.4 The Session concept ......................................... 14 4 Data files 17 4.1 Native format ............................................. 17 4.2 Other data file formats ....................................... 17 4.3 Binary databases ........................................... 17 4.4 Creating a data file from scratch ................................ -
Using Octave and Sagemath on Taito
Using Octave and SageMath on Taito Sampo Sillanpää 17 October 2017 CSC – Finnish research, education, culture and public administration ICT knowledge center Octave ● Powerful mathematics-oriented syntax with built- in plotting and visualization tools. ● Free software, runs on GNU/Linux, macOS, BSD, and Windows. ● Drop-in compatible with many Matlab scripts. ● https://www.gnu.org/software/octave/ SageMath ● SageMath is a free open-source mathematics software system licensed under the GPL. ● Builds on top of many existing open-source packages: NumPy, SciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and many more. ● http://www.sagemath.org/ Octave on Taito ● Latest version 4.2.1 module load octave-env octave Or octave --no-gui ● Interactive sessions on Taito-shell via NoMachine client https://research.csc.5/-/nomachine Octave Forge ● A central location for development of packages for GNU Octave. ● Packages can be installed on Taito module load octave-env octave --no-gui octave:> pkg install -forge package_name octave:> pkg load package_name SageMath on Taito ● installed version 7.6. module load sagemath sage ● Interactive sessions on Taito-shell via NoMachine client. ● Browser-based notebook sage: notebook() Octave Batch Jobs #!/bin/bash -l #mytest.sh #SBATCH --constraint="snb|hsw" #SBATCH -o output.out #SBATCH -e stderr.err #SBATCH -p serial #SBATCH -n 1 #SBATCH -t 00:05:00 #SBATCH --mem-per-cpu=1000 module load octave-env octave --no-gui/wrk/user_name/example.m used_slurm_resources.bash [user@taito-login1]$ sbatch mytest.sh SageMath Batch Jobs #!/bin/bash -l #mytest.sh #SBATCH --constraint="snb|hsw" #SBATCH -o output.out #SBATCH -e stderr.err #SBATCH -p serial #SBATCH -n 1 #SBATCH -t 00:05:00 #SBATCH --mem-per-cpu=1000 module load sagemath sage /wrk/user_name/example.sage used_slurm_resources.bash [user@taito-login1]$ sbatch mytest.sh Instrucons and Documentaon ● Octave – https://research.csc.5/-/octave – https://www.gnu.org/software/octave/doc/interp reter/ ● SageMath – https://research.csc.5/-/sagemath – http://doc.sagemath.org/ [email protected]. -
Architektura Dużych Projektów Bioinformatycznych Pakiety Do Obliczeń: Naukowych, Inżynierskich I Statystycznych Przegląd I Porównanie
Architektura dużych projektów bioinformatycznych Pakiety do obliczeń: naukowych, Inżynierskich i statystycznych Przegląd i porównanie Bartek Wilczyński 9.5.2018 Plan na dziś ● Pakiety do obliczeń: przegląd zastosowań ● różnice w zapotrzebowaniu: naukowcy, inżynierowie, statystycy/medycy ● Matlab/octave/scipy ● S-Plus/SPSS/projekt R ● Mathematica/Maxima/Sage ● Pakiety komercyjne vs. Open Source ● Excel? Typowi użytkownicy pakietów obliczeniowych ● Inżynierowie i projektanci (budownictwo, lotnictwo, motoryzacja, itp.) ● Naukowcy doświadczalni (fizycy, chemicy, materiałoznawcy, itp.) ● Statystycy (zastosowania w medycynie, ekonomii, biologii molekularnej, psychologii, socjologii, ubezpieczeniach, itp.) ● Matematycy (przede wszystkim matematyka stosowana ) Obliczenia naukowe ● Komputer jako “potężniejszy kalkulator” ● W zasadzie wszystko można zaprogramować samemu, ale każdemu mogą się przydać: – Interfejs użytkownika łatwiejszy niż typowego kompilatora – Możliwość zaawansowanej grafiki – Dobrze przetestowane standardowe procedury – Interfejsy do urządzeń – Wsparcie fachowców Matlab i pakiety “inżynierskie” ● Rozwijany w latach 70'tych przeze Cleve Moler'a jako narzędzie dla studentów informatyki, aby nie musieli używać zaawansowanych bibliotek fortranu ● Firma mathworks powstaje w 1984 i wydaje pierwszą wersję Matlab'a ● Najpopularniejszy wśród inżynierów, dobre całki numeryczne, rozwiązywanie równań i wykresy (również 3d) ● Bardzo popularny także do przetwarzania sygnałów i symulacji (simulink) ● Licencja komercyjna – niedrogi dla studentów, -
Introducing Xuni & Xamarin.Forms
INTRODUCING XUNI & XAMARIN.FORMS Hosted by Greg Lutz, Kelley Ricker & Ross Dederer OVERVIEW .Brief background on mobile development .Introduction to Xamarin.Forms .Introduction to Xuni .Hands-on building a mobile app with Xamarin.Forms .Adding data visualization controls to an app using Xuni .Questions & Survey This web cast will be recorded and available to watch again at any time. MOBILE DEVELOPMENT .Consumers and businesses alike are all going mobile .Bring Your Own Device (BYOD) is a common practice for businesses whose enterprise apps work on a variety of different devices .For mobile app development we have two choices, each with pros and cons: . Web . Native MOBILE WEB APPS .Mobile Web sites or Web Apps made to look and feel native (Hybrid Apps) .Tools like PhoneGap and Ionic help produce Hybrid apps .Written with JavaScript and HTML on client-side .Reach ~100% of mobile users because all smart phones can display a web page NATIVE APPS .Native apps are built using OS-specific programming languages and tools Programming Language Popular Tools Android Java Eclipse iOS Objective-C Xcode Windows Phone C# Visual Studio .Reach ~99% of users WEB VS NATIVE Pros Cons Web Write once (HTML5/JavaScript) Not truly native Native Better user experience Write 3 times (Android, iOS, Windows Phone) What if we could have the best of both worlds – write once and get the best user experience? XAMARIN.FORMS Xamarin.Forms is a cross-platform natively backed UI toolkit abstraction that allows developers to easily create user interfaces that can be shared across Android, iOS, and Windows Phone. Xamarin.Forms Xamarin.iOS Xamarin.Android Windows Phone iOS Android XAMARIN.FORMS EXAMPLE: TABBED PAGE Pivot XAMARIN.FORMS VIEWS (CONTROLS) .ActivityIndicator .Picker .BoxView .ProgressBar .Button .SearchBar .DatePicker .Slider .Editor .Stepper .Entry .Switch .Image .TableView .Label .TimePicker .ListView .Web View XAMARIN COMPONENT STORE http://components.xamarin.com/ XUNI .Xuni is a collection of native, cross-platform controls designed for Xamarin.Forms .Like Xamarin.Forms, . -
Sageko Matlabin Korvaaja?
Mikko Moilanen Sageko Matlabin korvaaja? Opinnäytetyö Tietotekniikan koulutusohjelma Elokuu 2012 KUVAILULEHTI Opinnäytetyön päivämäärä 4.9.2012 Tekijä(t) Koulutusohjelma ja suuntautuminen Mikko Moilanen Tietotekniikan koulutusohjelma Nimeke Sageko Matlabin korvaaja? Tiivistelmä Tässä insinöörityössä tutkitaan voiko Sagella korvata Matlabin korkeakouluopinnoissa matemaattisen analyysin opiskelutyövälineenä. Tutkimuksen perusteella arvioidaan, että onko Sagella tulevaisuutta ohjelmistona, varmistetaan Sagen toimivuus matemaattisessa analyysissa ja selvitetään, että miten helppoa yksittäisen käyttäjän on ottaa Sage käyttöön ja miten oppilaitos saa Sagen käyttöönsä. Matlab on kiistaton standardiohjelmisto matemaattisessa mallinnuksessa ja analyysissa. Sen peruslisenssimaksut ja Toolboxien lisenssimaksut ovat kuitenkin kohonneet ehkä juuri tästä syystä korkeiksi ja mikään ei estä lisenssimaksujen jatkuvaa kohoamista. Näin ollen halvemman vaihtoehdon löytäminen Matlabille korkeakouluopintojen työvälineenä on mielenkiintoinen ja hyödyllinen tutkimuskohde. Eräs mielenkiintoinen vaihtoehto Matlabille on Sage, koska se kokoaa lähes 100 matemaattista laskentaohjelmistoa yhden ja saman käyttöliittymän alle. Sage on myös suunniteltu toimimaan palvelin/asiakas -mallilla WWW-selaimella, mistä voi olla erityistä hyötyä laajoissa asennuksissa ylläpidon ja luokkahuoneidan varaamisen kannalta . Tutkimuksen tuloksena havaittiin Sagen olevan niin erilainen ja epäyhteensopiva Matlabin kanssa, että Matlab ei ole suoraan korvattavissa Sagella. Sen sijaan todettiin,