amsterdam december 4-6, 2006 escience 2006 a grid-based architecture for the composition and the...

Amsterdam December 4-6, 2006

eScience 2006

A Grid-based Architecture for the Composition A Grid-based Architecture for the Composition and the Execution of Remoteand the Execution of Remote

Interactive MeasurementsInteractive Measurements

Andrea BagnascoAndrea Bagnasco, AriannaArianna PoggiPoggi,, AnnaAnna MarinaMarina ScapollaScapolla

{bagnasco, apoggi, scapolla}@dibe.unige.it{bagnasco, apoggi, scapolla}@dibe.unige.it

eScience 2006 eScience 2006 Amsterdam, Netherland Amsterdam, Netherland

December 4-6, 2006December 4-6, 2006

eScience 2006

OutlineOutline

Grid and instruments: state-of-the-art

Case study presentation

The proposal of a Grid-based architecture

Conclusions

eScience 2006

Grid and instruments: state-of-the-artGrid and instruments: state-of-the-art

Initially: grid technologies were applied to share and elaborate

massive experimental datasets; instruments were not considered grid resources; data acquisition in batch mode; no interaction with instruments.

Now, the interest is moving to : exposing instruments as grid resources; real-time access and control of remote instrumentation; dynamic cooperation of distributed measurement

instruments; service oriented approach .

eScience 2006

Case studyCase study

Web Portal

eScience 2006

RequirementsRequirements

Interactivity between users and measurement instruments. Management of repeated sequence of data acquisition,

computation and presentation. Real-time feedback from the test bench (human-in-the-loop

case). Uniqueness of resources (instruments are real devices

connected to specific systems under test). Instruments synchronization, when more instruments are

involved in a measurement. Test-bench access control (exclusive access or multi-user

concurrent access).

eScience 2006

Service oriented approachService oriented approach

Exposing instruments functionalities as Web Services: the instrument services offer the functionalities of a specific

device or of a set of devices that can be considered as a unique element on the base of their commonalities.

Thinking the measurement as a process that requires invoking instrument web services in an ordered sequence. This is a workflow and could be exposed as a web service

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The Grid-based ArchitectureThe Grid-based Architecture

Distributed Storage

PORTAL Composition ApplicationExecution Application

Measure-WF Repository

Storage Service

Computing Service

Instrument Service 2

InstrumentService 1Driver1 Driver2

Dev1 Dev2Hw setup

Instrument Services

Measure-WF Execution Service

Resource Tier

Engine Tier

Portal Tier

Security Service

Web Browser Client side

Measure-WF Manager Service

Measure-WF Composition Service

Server side

eScience 2006

Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Instrument Services

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

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Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Instrument Services

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

eScience 2006

Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Instrument Services

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

eScience 2006

Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Instrument Services

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

eScience 2006

Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Instrument Services

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

eScience 2006

Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Instrument Services

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

eScience 2006

Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Instrument Services

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

eScience 2006

Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Instrument Services

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

eScience 2006

Instrument Services

Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

eScience 2006

Distributed Storage

Storage Service

Computing Service

Dev1 Dev2Hw setup

Instrument Services

Resource Tier

Engine Tier

Portal Tier

Security Service

Server side

eScience 2006

The Grid-based Architecture: the portalThe Grid-based Architecture: the portal

Based on the GridSphere Portal framework

Provides a secure access to create and execute measurements.

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ConclusionsConclusions

We have implemented and tested: Instrument as grid resources. Instrument web services. Composition of measurement workflows. The “execution service” that coordinates the

operations of the real instruments. Lock/unlock. Session management. Instrument services invocation.

The prototype has been developed on electronic measurement instruments and experiments, but it is usable with any kind of devices.

eScience 2006

Thank you for your attentionThank you for your attention

Contact: Contact: [email protected]@dibe.unige.it

amsterdam december 4-6, 2006 escience 2006 a grid-based architecture for the composition and the...

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