issue_comments: 1518429926

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html_url issue_url id node_id user created_at updated_at author_association body reactions performed_via_github_app issue
https://github.com/pydata/xarray/issues/7772#issuecomment-1518429926 https://api.github.com/repos/pydata/xarray/issues/7772 1518429926 IC_kwDOAMm_X85agWbm 2448579 2023-04-21T23:56:26Z 2023-04-21T23:56:26Z MEMBER

I cannot reproduce this on main. What version are you running

``` (xarray-tests) 17:55:11 [cgdm-caguas] {~/python/xarray/devel} ──────> python lazy-nbytes.py 8582842640 Filename: /Users/dcherian/work/python/xarray/devel/lazy-nbytes.py

Line # Mem usage Increment Occurrences Line Contents

 4    101.5 MiB    101.5 MiB           1   @profile
 5                                         def get_dataset_size() :
 6    175.9 MiB     74.4 MiB           1       dataset =     xa.open_dataset("test_1.nc")
 7    175.9 MiB      0.0 MiB           1       print(dataset.nbytes)

```

The BackendArray types define shape and dtype so we can calculate size without loading the data.

 
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