IARnet: A General Framework for Porting Scientific Applications Into Distributed Computing Environment Oleg Sukhoroslov, Vladimir Voloshinov Institute for Systems Analysis, RAS, Moscow Distributed Computing Systems Laboratory

Ian Foster. “Grid: Enabling Open Science” Keynote, Nature Conference on Asia Pacific “Networks Promoting Excellence in Research”. June 6, 2007, Tokyo, Japan. “Bright future” of “Grid-science”

Not so bright day-to-day practice Great potential of service-oriented computing Lack of Grid-computing practice in day-to- day research Limited scope of application (batch- computing mostly) Existing tools are too complex. Strong need in a simple-to-use framework for sharing and collaborative use of application resources as a remote services

IARnet in a few words IAR denotes Information-Algorithmic Resources A software toolkit for transforming scientific tools into remotely accessible services Promotes sharing and collaborative use of existing tools Avoids unnecessary complexity, making the toolkit easy to learn and to use (both for service and client developers) The concept - in 2003, a name IARnet , first version (IARnet v1) in

IARnet resource and agents IARnet resource Agent unified interface (v1) Resource Agent connected with resource

Programming Model Service Container Calculator double sum(double[] args) CalcuatorService (Resource double add(double a, double b) { return calculator.sum(…); } CalculatorService s = new CalculatorService(…); Container container = new Container(port, …); ResourceReference ref = container.deploy(s); container.start(); Transport Plug-in IARnet Client API Client Application Remote Invocation Resource calc = LocateResource.getResource(ref); Double sum = (Double) calc.invoke(“add(double,double):double", new Object[]{ new Double(1.1), new Double(2.2) }); …. WS (SOAP) CORBA Ice WS (SOAP) CORBA Ice

IARnet features (v1) Languages Java, C++ for service implementations Java for client applications Data types Primitive, arrays, lists, sets, maps Transport plug-ins CORBA, SOAP, Ice ( Asynchronous calls Services Information Service (publish/discovery), Workflow Management Service

Information Service (v1) IARnet ontology (OWL)

Workflow Management Service (v1)

Applications benefiting from IARnet Problems, which can be decomposed into multiple sub-problems might be solved by existing application Coordination between resources is needed Interactive control of application execution Distributed algorithm for solving optimal control problem Distributed simulation models (e.g., macro-economy, ecology) Geoinformation applications Branch-and-bound methods for global optimization

IARnet and existing Grid-systems

Thank you! For more information please contact us IARnet: Oleg Sukhoroslov, Vladimir Voloshinov,

IARnet (v1) architecture

Future: IARnet2 Based on Ice (zeroc.com) middleware Elegant and powerful interface definition language Support for C++, Java, C#, Visual Basic, Python, PHP, and Ruby High performance and scalability Built-in security Password and SSL authentication, pluggable authorization modules, session management, support for virtual organizations Scalable site model Set of services managed by some person or organization IARnet2 site can scale from a single desktop to a server pool Avoids unnecessary complexity Much easier to use than programming services with GT4 Prototype implementation in Java is available

IARnet levels