Introduction to Fabric Kiwi Team PSNC. E-VLBI system – general idea.

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Presentation transcript:

Introduction to Fabric Kiwi Team PSNC

E-VLBI system – general idea

System architecture

Experiment creation phase

Experiment creation phase: components The Workflow Manager (WFM) – the e-VLBI System allows astronomers to plan, execute and monitor their observations in the form of so called workflows: ▫ definition of storage elements, ▫ definition of data flows ▫ definition of computation resources, etc. e-VLBI workflow has to be created for each observation. The Workflow Manager Application (WFM) has been created to allow users to design and execute their observation workflows easily

Correlation phase

Correlation phase: components VLBI Broker module ▫ central element of the e-VLBI System providing the centralized control of the entire experiment. Correlated Data Service (CDS) - service responsible for storing correlated data in the Jive Archive. Translation Node (TN) – responsible for handling data from radio telescopes and preparing data for correlation. The data stream from radio telescope is buffered and divided into a smaller chunks. Chunk sets (every corresponding chunk from each data source) are temporarily stored within File Server disk space until they are correlated. Correlation Node (CN) – responsible for managing and executing correlation jobs on the cluster/grid.

Observation workflow Constructed: ▫ by VLBI operator ▫ based on the observation schedule (VEX) ▫ with Workflow Manager Application (WFM)

Observation workflow

Workflow Manager