1. 1 www.quadrus.com Applications of.NET to Scientific Computing James Kovacs Lead Senior Systems Analyst Quadrus Development Inc. March 22, 2005

2. www.quadrus.com 2 Agenda Introductions Benefits of.NET.NET Framework Overview Windows Forms ASP.NET Web Services

3. www.quadrus.com 3 About 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

4. www.quadrus.com 4 About 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

5. www.quadrus.com 5 Benefits of.NET Ease of use Choice of development language Greatly improved stability and security Common development framework

6. www.quadrus.com 6 Ease 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 3 rd -party components available

7. www.quadrus.com 7 Language 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 3 rd -party developed/supported  Cobol  PHP  Perl  Many others

8. www.quadrus.com 8 Stability 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

9. www.quadrus.com 9 Common Development Framework Windows application  Windows Forms Web application  ASP.NET Server application  Web Services  Windows Services Mobile devices  ASP.NET  Compact Framework

10. www.quadrus.com 10.NET Framework Overview Operating System Common Language Runtime Base Class Library ADO.NET and XML ASP.NET Web Forms Web Services Mobile Internet Toolkit WindowsForms Common Language Specification VBC++C#JScriptJ# Visual Studio.NET

11. www.quadrus.com 11 Common Language Runtime Base Class Library Support Thread Support COM Marshaler Type Checker Exception Manager JITCompilerCodeManagerGarbageCollector Security Engine Debug Engine Class Loader

12. www.quadrus.com 12 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

13. www.quadrus.com 13 Garbage Collector Compacting, generational GC Frees developer from managing memory Eliminates memory leaks

14. www.quadrus.com 14 JIT Compiler Assembly Source Code Language Compiler Compilation Execution JIT Compiler NativeCode Code (MSIL) Metadata At installation or the first time each method is called

15. www.quadrus.com 15.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

16. www.quadrus.com 16.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”

17. www.quadrus.com 17 Windows Forms Rapid application development (RAD) Rich interface and user controls ActiveX support Accessibility Licensing Printing Deployment scenarios  MSI  No touch deployment

18. www.quadrus.com 18 ASP.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

19. www.quadrus.com 19 Web Services using ASMX ASMX  [WebMethod]  [WebService] SOAP Universal Description, Discovery and Integration (UDDI) Web Services Description Language (WSDL) XML serialization

20. www.quadrus.com 20 Web 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

21. www.quadrus.com 21 Web Services Architecture Foundation Applications & Application Structure Transport Connected Applications Management Business Processes … SecurityWS-SecurityWS-TrustWS-Federation ReliabilityWS-RMTransactionsWS-CoordinationWS-Transactions Messaging (SOAP, WS-Addressing) XML Metadata WSDL, WS-Policy UDP TCP HTTP

22. www.quadrus.com 22 Microsoft 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

23. www.quadrus.com 23 Questions http://www.jameskovacs.com JamesK@Quadrus.com

24. www.quadrus.com 24 References Performance  http://blogs.msdn.com/ricom/ http://blogs.msdn.com/ricom/  http://blogs.msdn.com/ricom/archive/2005/02/ 22/378335.aspx http://blogs.msdn.com/ricom/archive/2005/02/ 22/378335.aspx  http://msdn.microsoft.com/library/default.asp? url=/library/en- us/dndotnet/html/fastmanagedcode.asp http://msdn.microsoft.com/library/default.asp? url=/library/en- us/dndotnet/html/fastmanagedcode.asp