Citation
Christopher Brooks, erwin de ley. "Triquetrum: Models of Computation for Workflows". Talk or presentation, 8, March, 2016; Presented at EclipseCon NA 2016, Reston, VA.

Abstract
Triquetrum is a new Eclipse project for managing and executing scientific workflows. The goal of Triquetrum is to support a wide range of use cases, ranging from automated processes based on predefined models, to replaying ad-hoc research workflows recorded from a user's actions in a scientific workbench UI. It will allow to define and execute models from personal pipelines with a few steps to massive models with thousands of elements. Triquetrum uses the actor model, where actors read inputs, make local decisions and write outputs. Actor models are inherently concurrent, where as object-oriented systems are typically executed sequentially (though often with a threading system added on). The execution semantics of an actor is called the model of computation. There are many different models of computation including discrete event, finite state machines, continuous time and synchronous dataflow. The Triquetrum system gives the user the ability to hierarchically compose workflows using different models of computation and to get deterministic results. Workflows have been used by systems like Kepler and Taverna to support data provenance and reproducibility for experiments that use large data sets. Triquetrum consists of three workstreams. The first is moving the Ptolemy actor execution engine into OSGi bundles and providing an RCP GUI. The second is providing APIs and OSGI service implementations for Task-based processing, which will be independent of Ptolemy. The third is developing APIs and tools for external software packages, resource managers and data sources. We will discuss how Triquetrum will be used or is already used in Science Working Group projects, including Eclipse ICE and DAWNSci.

Electronic downloads

• BrooksTriquetrumEclipseConNA08Mar2016.pdf · application/pdf · 2360 kbytes
• https://www.eclipsecon.org/na2016/session/triquetrum-models-computation-workflows. (published version)

• HTML

  Christopher Brooks, erwin de ley. <a
  href="http://chess.eecs.berkeley.edu/pubs/1169.html"><i>Triquetrum:
  Models of Computation for Workflows</i></a>,
  Talk or presentation,  8, March, 2016; Presented at <a
  href="https://www.eclipsecon.org/na2016/session/triquetrum-models-computation-workflows"
  >EclipseCon NA 2016</a>, Reston, VA.

• Plain text

  Christopher Brooks, erwin de ley. "Triquetrum: Models
  of Computation for Workflows". Talk or presentation, 
  8, March, 2016; Presented at <a
  href="https://www.eclipsecon.org/na2016/session/triquetrum-models-computation-workflows"
  >EclipseCon NA 2016</a>, Reston, VA.

• BibTeX

  @presentation{Brooksdeley16_TriquetrumModelsOfComputationForWorkflows,
      author = {Christopher Brooks and erwin de ley},
      title = {Triquetrum: Models of Computation for Workflows},
      day = {8},
      month = {March},
      year = {2016},
      note = {Presented at <a
                href="https://www.eclipsecon.org/na2016/session/triquetrum-models-computation-workflows"
                >EclipseCon NA 2016</a>, Reston, VA.},
      abstract = { Triquetrum is a new Eclipse project for managing
                and executing scientific workflows. The goal of
                Triquetrum is to support a wide range of use
                cases, ranging from automated processes based on
                predefined models, to replaying ad-hoc research
                workflows recorded from a user's actions in a
                scientific workbench UI. It will allow to define
                and execute models from personal pipelines with a
                few steps to massive models with thousands of
                elements. Triquetrum uses the actor model, where
                actors read inputs, make local decisions and write
                outputs. Actor models are inherently concurrent,
                where as object-oriented systems are typically
                executed sequentially (though often with a
                threading system added on). The execution
                semantics of an actor is called the model of
                computation. There are many different models of
                computation including discrete event, finite state
                machines, continuous time and synchronous
                dataflow. The Triquetrum system gives the user the
                ability to hierarchically compose workflows using
                different models of computation and to get
                deterministic results. Workflows have been used by
                systems like Kepler and Taverna to support data
                provenance and reproducibility for experiments
                that use large data sets. Triquetrum consists of
                three workstreams. The first is moving the Ptolemy
                actor execution engine into OSGi bundles and
                providing an RCP GUI. The second is providing APIs
                and OSGI service implementations for Task-based
                processing, which will be independent of Ptolemy.
                The third is developing APIs and tools for
                external software packages, resource managers and
                data sources. We will discuss how Triquetrum will
                be used or is already used in Science Working
                Group projects, including Eclipse ICE and DAWNSci. },
      URL = {http://chess.eecs.berkeley.edu/pubs/1169.html}
  }
  

Posted by Christopher Brooks on 9 Mar 2016.
Groups: triq
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