Amsterdam December 4-6, 2006 eScience 2006 A Grid-based Architecture for the A Grid-based Architecture for the Composition Composition and the Execution of Remote and the Execution of Remote Interactive Measurements Interactive Measurements Andrea Bagnasco Andrea Bagnasco, Arianna Arianna Poggi Poggi , , Anna Anna Marina Marina Scapolla Scapolla {bagnasco, apoggi, {bagnasco, apoggi, scapolla}@dibe.unige.it scapolla}@dibe.unige.it eScience 2006 eScience 2006 Amsterdam, Netherland Amsterdam, Netherland December 4-6, 2006 December 4-6, 2006
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Andrea Bagnasco , Arianna Poggi , Anna Marina Scapolla {bagnasco, apoggi, scapolla}@dibe.unige.it
A Grid-based Architecture for the Composition and the Execution of Remote Interactive Measurements. Andrea Bagnasco , Arianna Poggi , Anna Marina Scapolla {bagnasco, apoggi, scapolla}@dibe.unige.it. eScience 2006 Amsterdam, Netherland December 4-6, 2006. Outline. - PowerPoint PPT Presentation
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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
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 .
Amsterdam December 4-6, 2006
eScience 2006
Case studyCase study
Web Portal
Amsterdam December 4-6, 2006
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).
Amsterdam December 4-6, 2006
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
Amsterdam December 4-6, 2006
eScience 2006
The Grid-based ArchitectureThe Grid-based Architecture
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.
Amsterdam December 4-6, 2006
eScience 2006
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.
Amsterdam December 4-6, 2006
eScience 2006
Thank you for your attentionThank you for your attention