iarnet: a general framework for porting scientific applications into distributed computing...
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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 - 2004, first version (IARnet v1) in 2005-06.
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 Agent)
@Remotedouble 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-inTransport 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 (www.zeroc.com)
Asynchronous calls Services
Information Service (publish/discovery), Workflow Management Service
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
Thank you!
For more information please contact usIARnet: Oleg Sukhoroslov, os@isa.ru,
Vladimir Voloshinov, vv_vol@isa.ru
Future: IARnet2 Based on Ice (zeroc.com) middleware
Elegant and powerful interface definition languageSupport for C++, Java, C#, Visual Basic, Python, PHP, and RubyHigh performance and scalability
Built-in securityPassword and SSL authentication, pluggable authorization modules,session management, support for virtual organizations
Scalable site modelSet of services managed by some person or organizationIARnet2 site can scale from a single desktop to a server pool
Avoids unnecessary complexityMuch easier to use than programming services with GT4Prototype implementation in Java is available
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