Is there a way to determine (deep) memory usage of Dataset or DataArray objects?

[johann-petrak]

The only thing I found is CFTimeIndex.memory_usage but nothing equivalent for Dataset or DataArray. Is there some other method?

[pierre-manchon]

Hello,

You can use the nbytes method. This method will return the size in bytes of your object. It works for Dataset and DataArray objetcs. I'm not sure for DatasetGroupBy and DataArrayGroupBy objects though.
From there you'll be able to convert it to Mb, Gb, etc. There is this nice stackoverflow thread covering this subject.

Pierre

[johann-petrak]

Thanks, but it seems this just passes through the value for the underlying numpy array of a DataArray, it does not include whatever the overhead of the DataArray structure is, nor the size needed by the coordinates, attributes etc.

[pierre-manchon]

Thanks, but it seems this just passes through the value for the underlying numpy array of a DataArray, it does not include whatever the overhead of the DataArray structure is, nor the size needed by the coordinates, attributes etc.

I misunderstood what you meant, sorry.

[dcherian]

See #5764 . There's no way to do it at present.