If you have the HDF5 ZFP plugin available, then you can certainly
use it in netcdf.
Some documentation on netcdf filter support is here:
>https://github.com/Unidata/netcdf/blob/master/NUG/filters.md
=Dennis Heimbigner
Unidata
On 3/23/2021 10:52 AM, Leigh Orf wrote:
Hello,
I'm a long time user of HDF and netcdf. I create lots of data in my
research (severe weather simulation) and ZFP compression in HDF5 files
has been great. I'd like to be able to create netcdf4 files
(preferably using the netcdf API) with 3D fields compressed using the
lossy ZFP compression algorithm. I know that netcdf4 is HDF5 so it's
certainly possible.
I'm wondering whether anyone could provide any pointers. I see 3
options really.
1. Create ZFP compressed netcdf4 files using the normal netCDF-C API
(my code is mostly C)
2. Create ZFP compressed netcdf4 files using the HDF5 API (including
all the HDF5 special sauce that makes netcdf4 netcdf4)
3. Use a version of nccopy that understands ZFP
Are any of these options possible right now? If not where are we on
efforts to include ZFP into netCDF? I did grab the latest code on
github and saw references to ZFP but no filter code.
Leigh Orf
UW-Madison
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