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ARPEGE/ALADIN/AROME IO : technical aspects (cycle 39t1, May 2013)

Thursday 23 May 2013 by Patricia

This document by Philippe Marguinaud describes the IO subsystem of ARPEGE/ALADIN/AROME for cycle 39t1. Only historic data IO is covered here, with a few words on Fullpos IO.

Contents :

  • Organization of the code
    • Field descriptors
    • IO buffers
    • Extracting/loading fields
    • MFIOOPTS
    • Code cleaning
  • Grid-point/spectral
  • Traditional input/output
    • Grid-point input
    • Grid-point output
    • Grid-point output alternatives
    • Spectral fields input/output
  • Extended traditional output
    • One file per NSTROUT task
    • A single file written by all tasks
    • An alternative to GATHFLNM
  • Disabling traditional output
  • Compacting fields with OpenMP
  • SURFEX IO
    • Anatomy of a SURFEX historic file in FA
    • Conversion from/to LFI
    • Modifying SURFEX historic files
    • Enabling FA
    • The SURFEX cache
  • The IO server
    • Implementation of the IO server
    • Namelist parameters
    • Field based mode
    • Gather based mode
    • Reading data produced by the IO server
  • Fullpos & SURFEX
  • Further developments
    • Reading input files with Multi-Threading
    • Simplifying the code
    • Removing LFI from mse project

titre documents joints

IO subsystem (39T1)

23 May 2013
info document : PDF
173.9 kb

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