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
I
nformation
-
A
lgorithmic
R
esources
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)
@Remote
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
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 (www.zeroc.com)
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,
os@isa.ru
,
Vladimir Voloshinov,
vv_vol@isa.ru
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
IARnet
levels
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