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  • Element wise dataArray generation · 4 ✖

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  • CONTRIBUTOR · 4 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
610167347 https://github.com/pydata/xarray/issues/3932#issuecomment-610167347 https://api.github.com/repos/pydata/xarray/issues/3932 MDEyOklzc3VlQ29tbWVudDYxMDE2NzM0Nw== apatlpo 11750960 2020-04-07T04:32:12Z 2020-04-07T04:32:12Z CONTRIBUTOR

I'll close this for now as there doesn't seem to be other ideas about this

 
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   Element wise dataArray generation 593825520
609605285 https://github.com/pydata/xarray/issues/3932#issuecomment-609605285 https://api.github.com/repos/pydata/xarray/issues/3932 MDEyOklzc3VlQ29tbWVudDYwOTYwNTI4NQ== apatlpo 11750960 2020-04-06T07:08:19Z 2020-04-06T07:08:19Z CONTRIBUTOR

This sounds like method 1 (with dask delayed) to me. There may be no faster option, thanks for giving it a thought @fujiisoup 

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   Element wise dataArray generation 593825520
609407162 https://github.com/pydata/xarray/issues/3932#issuecomment-609407162 https://api.github.com/repos/pydata/xarray/issues/3932 MDEyOklzc3VlQ29tbWVudDYwOTQwNzE2Mg== apatlpo 11750960 2020-04-05T12:17:15Z 2020-04-05T12:17:47Z CONTRIBUTOR

thanks a lot @fujiisoup, your suggestion does help getting rid of the necessity to build the ds['_y'] variable. Here is the updated apply_ufunc solution: ``` x = np.arange(10100) y = np.arange(20100)

ds = xr.Dataset(coords={'x': x, 'y': y})

ds = ds.chunk({'x': 1, 'y':1}) # does not change anything

let's say each experiment outputs 5 statistical diagnostics

Nstats = 5 some_exp = lambda x, y: np.ones((Nstats,))

out = xr.apply_ufunc(some_exp, ds.x, ds.y, dask='parallelized', vectorize=True, output_dtypes=[float], output_sizes={'stats': Nstats}, output_core_dims=[['stats']]) ``` An inspection of the dask dashboard indicates that the computation is not distributed among workers though. How could I make sure this happens?

 
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   Element wise dataArray generation 593825520
609407192 https://github.com/pydata/xarray/issues/3932#issuecomment-609407192 https://api.github.com/repos/pydata/xarray/issues/3932 MDEyOklzc3VlQ29tbWVudDYwOTQwNzE5Mg== apatlpo 11750960 2020-04-05T12:17:26Z 2020-04-05T12:17:26Z CONTRIBUTOR

sorry closed by accident

 
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   Element wise dataArray generation 593825520

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