CDO select variable in parallel

Question

I want to select/split a specific variable TT from a big NetCDF file using the CDO library/package in parallel to speed up the process.

I used the following:

cdo -P 8 select,name=TT infile.nc outfile_TT.nc

but got the following error:

-bash: cdo -P: command not found

I have tried also -selname and -select as operators but it gives me the same error.

It only works when I run it in serial (i.e., remove -P 8) as follows:

cdo select,name=TT infile.nc outfile_TT.nc

Is it possible to run this in parallel using CDO?

Answer 1

According to the CDO documentation (Appendix B - Parallelized operators) parallel processing is not supported for select operator.