Custom Query (116 matches)

Hi,

Curiosity question : I noticed that using xios in "attached mode" with "multiple file" option, the output files does not correspond to the domain decomposition used for the simulation. For example using 5 x 5 subdomains for the simulation, xios will create 25 files but not in the "shape" than the defined subdomain shape. The recombination of the files looks OK.

Thanks, Sébastien

It seems the use of "indexed_output" field attribute impacts the following fields written on the same grid.

• Example 1 :

     <file id="output" name="output" >
        <field field_ref="field_A" />
      </file>
      <file id="output_indexed" name="output_indexed" >
        <field field_ref="field_A" indexed_output="true" />
      </file>
      <file id="output_noindexed" name="output_noindexed">
           <field field_ref="field_A" />
       </file>
  

  • Results
    • field_A in output.nc file is OK
    • field_A in output_noindexed.nc is NOT OK

• Example 2 :

     <file id="output" name="output" >
        <field field_ref="field_A" />
      </file>
      <file id="output_noindexed" name="output_noindexed">
           <field field_ref="field_A" />
       </file>
      <file id="output_indexed" name="output_indexed" >
        <field field_ref="field_A" indexed_output="true" />
      </file>
  

  • Results
    • field_A in output.nc file is OK
    • field_A in output_noindexed.nc is OK

Actually gaussian grid are considered like unstructured, ie edge are geodesic line (a great circle on the sphere). When interpolation is performed, interpolation error is increasing near the pole. Gaussian grid must specifie to the mapper that vertex on same latitude are linked with a small circle (like regular lon lat grid)