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Exploit zstandard compression support of NetCDF v4.9.0 #554

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leuty opened this issue Oct 12, 2022 · 1 comment
Closed
3 tasks

Exploit zstandard compression support of NetCDF v4.9.0 #554

leuty opened this issue Oct 12, 2022 · 1 comment
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enhancement New feature or request

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@leuty
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leuty commented Oct 12, 2022

In COSMO we currently use zlib for compressing NetCDF4 output, which is too slow when using the standard system implementation. To circumvent this performance issue we now exploit the more performant zlib-ng implementation as a replacement. Since netcdf-c 4.9.0 and netcdf-fortran 4.6.0 NetCDF provides support for the zstandard which is about as performant as zlib-ng. These new options allow removing the zlib-ng option and retiring the corresponding package.

  • Requrie netcdf-c, >= 4.9, netcdf-fortran >= 4.6 with zstandrd support enabeled.
  • Replace zlib by standard functions in COSMO, see here.
  • Retire zlib-ng package
@mjaehn mjaehn added the enhancement New feature or request label Mar 7, 2023
@dominichofer
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dominichofer commented Apr 2, 2024 •
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COSMO becomes irrelevant soon. No more features for now.

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@dominichofer @leuty @mjaehn