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speedup with xr.open_mfdataset kwargs #14

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aaronspring opened this issue Sep 3, 2020 · 0 comments
Closed

speedup with xr.open_mfdataset kwargs #14

aaronspring opened this issue Sep 3, 2020 · 0 comments

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@aaronspring
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nice code base. will definitely try the MPICluster soon.

saw the benchmark that Bjorn mentioned in the julia mattermost group. I have a speedup suggestion:

xarray takes much time in coordinate checking which can be circumvented.

ds = xr.open_mfdataset(files, parallel=True, coords="minimal", data_vars="minimal", compat='override')

pydata/xarray#1823

My own example on mistral with smaller data: https://gitlab.dkrz.de/m300524/pymistral/-/blob/master/notebooks/read_netcdf_fast.ipynb
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