Code Coupling and I/O

Contents

Scope

The objectives of the PAE Code Coupling and I/O are:
  • to develop, maintain and support tools for coupling climate modelling component codes
  • ensure a constant technology watch on coupling tools developed outside PRISM
  • be a forum of discussion about technical aspects of coupling for climate modellers using the tools developed in the PAE
  • be a forum of discussion about the different coupling approaches that can be used in climate modelling (e.g. through an external coupler vs by direct assembling into a hierarchical supra-component)
  • keep strong relations with the different projects involving code coupling in climate modelling internationally (e.g. GENIE, FLUME, ESMF, etc.)

News & Meetings

New OASIS3 release
September 13, 2006
A new version of the OASIS3 coupler, oasis3_prism_2-5, is now available on the CERFACS CVS server.
New OASIS4 beta version released for the GEMS project, SMHI & the UK Met Office
September 04, 2006
The beta testing of the OASIS4 coupler is actively on-going. A new OASIS4 beta version, which sources were reorganised to fit the PRISM standard directory structure and Standard Compiling Environment (SCE) is now available from the CERFACS CVS server for the GEMS project, SMHI and the UK Met Office.
PRISM and OASIS 4 Coupler presented at GENIE workshop
June 26, 2006
The PRISM project and details of the OASIS coupler PDF Document were presented at the GENIE Earth System Modelling workshop in Cambridge.
OASIS 4 Coupler presented at the EGU 2006
April 04, 2006
The OASIS4 coupler was presented during the CL45 poster session. A first poster PDF Document described the OASIS4 general architecture, while a second poster PDF Document gave more details on its multigrid search algorithm.

Software

  • The PRISM couplers OASIS3 and OASIS4

    • Coupling numerical models is a central issue in the climate research community and in other research fields such as electromagnetism, computational fluid dynamics (CFD). OASIS was written to answer this requirement. OASIS is a software allowing synchronized exchanges of coupling information between numerical codes representing different components of the climate system. The last versions, OASIS3 and OASIS4, were developed in the framework of the EU FP5 PRISM project, and are now supported and developed further within the PRISM Support Initiative.

  • A PRISM candidate tool: PALM

    • The PALM software Links to external site is a coupler designed to combine dynamically different components into a high performance application. PALM was originally developed for operational oceanographic data assimilation, in the framework of the French MERCATOR project. The PALM Driver supports the dynamic launching of the coupled components while its coupling library ensures parallel data exchanges including repartitioning between the components. PALM also provides pre-defined algebra units.

     

People

Sophie Valcke(lead), Laure Coquart
CERFACS
42 Avenue Gaspard Coriolis
31057
Toulouse
France

René Redler, Hubert Ritzdorf
C&C Research Laboratories
NEC Europe Ltd.
Rathausallee 10
D-53757 Sankt Augustin
Germany

Reiner Vogelsang
Silicon Graphics GmbH
Am Hochacker 3
D-85630 Grasbrunn
Germany

 

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