1www.quadrus.com

Applications of .NET to Applications of .NET to Scientific ComputingScientific Computing

James KovacsLead Senior Systems AnalystQuadrus Development Inc.

March 22, 2005

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AgendaAgenda

• Introductions• Benefits of .NET• .NET Framework Overview• Windows Forms• ASP.NET• Web Services

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About QuadrusAbout Quadrus• Formed in 1993

Close-knit group of highly skilled software professionals

• Solution Areas Software Development – complete end-to end or co-

development services for custom applications and EAI Project Management – methodology adoption, project

oversight Training & Mentoring – public and private course

offerings, PM and technical mentoring Business Intelligence – data warehouses, analytics,

reporting

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About James KovacsAbout James Kovacs

• Lead Senior Systems Analyst (Quadrus)• Masters in Physical Chemistry (Harvard)• Catalysis of hydrocarbons on metal

surfaces Required custom data acquisition and analysis

software

• http://www.jameskovacs.com• JamesK@Quadrus.com

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Benefits of .NETBenefits of .NET

• Ease of use• Choice of development language• Greatly improved stability and security• Common development framework

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Ease of UseEase of Use• Object-oriented model

Everything is an object

• Namespace and Framework structure Easier to comprehend and use Naming scheme of namespaces reflects the

underlying functionality

• Tremendous amount of available functionality .NET Framework contains thousands of classes

and methods Wide variety of 3rd-party components available

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Language ChoiceLanguage Choice• Everyone has their favourite language• .NET supports a wide variety of languages to

encourage adoption and interoperation• Microsoft developed/supported

C# VB.NET C++ with Managed Extensions J# JScript.NET

• 3rd-party developed/supported Cobol PHP Perl Many others

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Stability and SecurityStability and Security

• Garbage collector manages memory No more memory leaks

• Strongly versioned assemblies Eliminates DLL Hell

• Verifiably type-safe code Eliminates buffer overruns, indexing out of array

bounds, bad pointer arithmetic, use of uninitialized data, unsafe casts

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Common Development FrameworkCommon Development Framework

• Windows application Windows Forms

• Web application ASP.NET

• Server application Web Services Windows Services

• Mobile devices ASP.NET Compact Framework

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.NET Framework Overview.NET Framework Overview

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

Base Class LibraryBase Class Library

ADO.NET and XMLADO.NET and XML

ASP.NETASP.NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

Common Language SpecificationCommon Language Specification

VBVB C++C++ C#C# JScriptJScript J#J#V

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Common Language RuntimeCommon Language RuntimeBase Class Library SupportBase Class Library Support

Thread SupportThread Support COM MarshalerCOM Marshaler

Type CheckerType Checker Exception ManagerException Manager

JITJITCompilerCompiler

CodeCodeManagerManager

GarbageGarbageCollectorCollector

Security EngineSecurity Engine Debug EngineDebug Engine

Class LoaderClass Loader

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Common Language Runtime (CLR)Common Language Runtime (CLR)

• Common Type System (CTS) Defines a set of primitive types Enables cross-language integration and type

safety

• Common Language Specification (CLS) Defines a set of programmatically-verifiable

rules• Controls interoperation of types in different

programming languages

CLS-Compliant Code

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Garbage CollectorGarbage Collector

• Compacting, generational GC• Frees developer from managing memory• Eliminates memory leaks

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JIT CompilerJIT Compiler

AssemblyAssemblySource Source CodeCode

Language Language CompilerCompiler

CompilationCompilation

ExecutionExecution

JIT JIT CompilerCompiler

NativeNative

CodeCode

Code (MSIL)Code (MSIL)

MetadataMetadata

At installation or the At installation or the first time each first time each

method is calledmethod is called

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.NET Performance.NET Performance

• .NET comparable to native C/C++ for: Integer and floating point math Access to locals, parameters, and instance fields Flow of control Method calls

• Areas for improvement: 64-bit arithmetic Complex inlining cases Analysis time cap

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.NET Performance Advice.NET Performance Advice

• Correct and slow is better than fast and wrong

• Know the cost of the features you use Easy to use expensive operations/features

• Always measure before (and after) tuning• Don’t be afraid to throw away

“improvements”

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Windows FormsWindows Forms

• Rapid application development (RAD)• Rich interface and user controls• ActiveX support• Accessibility• Licensing• Printing• Deployment scenarios

MSI No touch deployment

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ASP.NETASP.NET

• Supports all .NET languages• Browser-compliant controls

JavaScript, DHTML

• Rich set of server controls DataGrid Validators

• Session management In-proc, state server, or SQL Server

• Compilation• Caching

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Web Services using ASMXWeb Services using ASMX

• ASMX [WebMethod] [WebService]

• SOAP• Universal Description, Discovery and

Integration (UDDI)• Web Services Description Language (WSDL)• XML serialization

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Web Services using WSE v2.0Web Services using WSE v2.0

• Web Services Enhancements• Supports advanced XML Web service

specifications WS-Addressing WS-Policy WS-Security

• Supports various message exchange patterns Request/response, publish/subscribe, one way,

etc.• Microsoft.Web.Services2.dll

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Web Services ArchitectureWeb Services Architecture

Foundation

Applications & Application Structure

Transport

Connected ApplicationsConnected Applications

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SecuritySecurityWS-SecurityWS-Security

WS-TrustWS-Trust

WS-FederationWS-Federation

ReliabilityReliabilityWS-RMWS-RM

TransactionsTransactionsWS-CoordinationWS-Coordination

WS-TransactionsWS-Transactions

Messaging (SOAP, WS-Addressing)Messaging (SOAP, WS-Addressing)

XMLXML

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UDP TCP HTTPUDP TCP HTTP

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Microsoft CorporationMicrosoft Corporation

• BizTalk Server 2004• CLR Hosts

Office 2003 Visual Studio .NET

• Content Management Server 2002

• MSN Music Search (Beta)

• Operations Manager 2005

• Project Server 2003• SharePoint Portal

Server 2003• SQL Server 2000

Notification Services Reporting Services

• SQL Server 2005• Windows Server 2003

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QuestionsQuestions

http://www.jameskovacs.comJamesK@Quadrus.com