Tavaxy: Integrating Taverna and Galaxy workflows with cloud computing support.

Tavaxy is a stand-alone system for creating and executing workflows based on using an extensible set of re-usable workflow patterns. Tavaxy offers a set of new features that simplify and enhance the development of sequence analysis applications: It also allows the integration of existing Taverna and Galaxy workflows in a single environment, and supports the use of cloud computing capabilities. The integration of existing Taverna and Galaxy workflows is supported seamlessly at both run-time and design-time levels, based on the concepts of hierarchical workflows and workflow patterns. The use of cloud computing in Tavaxy is flexible, where the users can either instantiate the whole system on the cloud, or delegate the execution of certain sub-workflows to the cloud infrastructure. Tavaxy reduces the workflow development cycle by introducing the use of workflow patterns to simplify workflow creation. It enables the re-use and integration of existing (sub-) workflows from Taverna and Galaxy, and allows the creation of hybrid workflows. Its additional features exploit recent advances in high performance cloud computing to cope with the increasing data size and complexity of analysis. The system can be accessed either through a cloud-enabled web-interface or downloaded and installed to run within the user’s local environment. All resources related to Tavaxy are available at http://www.tavaxy.org.

  • A simple and intuitive user interface. The workflow components are similar to that of flowchart.
  • User can choose to run their tools either on local infrastructure or remotely using web-services or cloud computing.
  • User can easily set the parameters of the tools and even change them in the running time.
  • Tavaxy supports control and data patterns (constructs) that facilitate the design and execution of the workflow.
  • The pattern set includes, among others, conditionals, iterations, sub-workflows, lists, data selects, data merges.
  • Workflows written in Taverna or in Galaxy can be imported and rendered in Tavaxy.
  • The user can compose and execute a hybrid workflow composed of Taverna and Galaxy subwrkflows in addition to Tavaxy workflows.
  • Remote calls in Taverna workflow can be automatically replaced with calls using locally installed tools.
  • A repository of pre-imported Taverna and Galaxy workflows, where the user can use these workflows or integrate them in a new workflow.
  • Tavaxy provides three modes of using cloud computing.

Reference:

Abouelhoda M, Issa SA, Ghanem M. Tavaxy: Integrating Taverna and Galaxy workflows with cloud computing support. BMC Bioinformatics. 2012 May 4;13(1):77. [Epub ahead of print] PubMed PMID: 22559942.

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