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  1. SAFe Program
  2. SP-3510

SRC workflow example: Source Finding

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    • Feature
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    • PI19
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    • SRCnet
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      SRCs will provide pre-built scripts for standard workflows that users expect to run. We aim to implement some of these, and test their effectiveness with regards to hardware limitations and data storage schemes. 

      This particular workflow looks at source finding using the PYBDSF algorithm which we have already containerised and used in Science Data Challenge 1. This workflow could test distributing images across a storage network (Rucio), and running source-finding on each of them simultaneously. The catalogues would then be retrieved and combined in a single location for the user.

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      SRCs will provide pre-built scripts for standard workflows that users expect to run. We aim to implement some of these, and test their effectiveness with regards to hardware limitations and data storage schemes.  This particular workflow looks at source finding using the PYBDSF algorithm which we have already containerised and used in Science Data Challenge 1. This workflow could test distributing images across a storage network (Rucio), and running source-finding on each of them simultaneously. The catalogues would then be retrieved and combined in a single location for the user.
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      AC1: Run a containerised version of PYBDSF to find sources and output a catalogue.

      AC2: Make this workflow interactive via Jupyterhub.

      AC3: Document this workflow on Git.

      Bonus-AC4: Distribute survey data across the Rucio storage network

      Bonus-AC5: Run source-finding on the distributed images simultaneously.

      Bonus-AC6: Retrieve the output catalogues across the storage network to a single location, filter and combine them into a master catalogue.

      Show
      AC1: Run a containerised version of PYBDSF to find sources and output a catalogue. AC2: Make this workflow interactive via Jupyterhub. AC3: Document this workflow on Git. Bonus-AC4: Distribute survey data across the Rucio storage network Bonus-AC5: Run source-finding on the distributed images simultaneously. Bonus-AC6: Retrieve the output catalogues across the storage network to a single location, filter and combine them into a master catalogue.
    • 0.5
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    • Team_MAGENTA
    • Sprint 5
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      Code and documentation at: https://gitlab.com/ska-telescope/src/src-scientific-use-cases/-/tree/master/tasks/source-finding-PYBDSF?ref_type=heads

      Demo: https://drive.google.com/file/d/1X9w6alrxfQ1Fu3BpiRTvIqEwZnZ4Vybz/view?usp=drive_link 

      AC2: SDC1 environment is available at https://jupyterhub.srcdev.skao.int/ 

      Show
      Code and documentation at: https://gitlab.com/ska-telescope/src/src-scientific-use-cases/-/tree/master/tasks/source-finding-PYBDSF?ref_type=heads Demo: https://drive.google.com/file/d/1X9w6alrxfQ1Fu3BpiRTvIqEwZnZ4Vybz/view?usp=drive_link   AC2: SDC1 environment is available at https://jupyterhub.srcdev.skao.int/  

    • PI24 - UNCOVERED

    • PI19-PB

    Description

      Input data: single/multiple images.

      Output data: catalogue.

      Software involved: PYBDSF (others exist).

      Workflow steps: Run PYBDSF in python with input parameter file. If multiple images in single or distributed locations, will need to write a script to combine the catalogues afterwards. 

      State of existing workflows: PYBDSF has been Containerised and is used in the SDC1 workflow. It would be minimal work to split this out as a stand alone use case for source finding on a single image. For a use case where data is distributed and catalogues are combined after, this would need a moderate amount of work to distribute the data and write a script that filters and combines the catalogues after.

      Architecture and hardware: Multithreaded CPU. Flexible RAM. Data in a single location, or if multiple images, can distribute and then combine catalogues after.

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          Feature - A Feature is a service that fulfills a stakeholder need. Each feature includes a benefit hypothesis and acceptance criteria, and is sized or split as necessary to be delivered by a single Agile Release Train (ART) in a Program Increment (PI). SP-3496 Consolidate naming and structure of SRC example workflow repository

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                r.bolton Bolton, Rosie
                r.bolton Bolton, Rosie
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