If changing the on-disk format is an option, I would suggest h5py https://docs.h5py.org/en/stable/ which allows to save numpy arrays in HDF5 format.

Stefano

On 14 May 2021, at 16:22, numpy-discussion-request@python.orgmailto:numpy-discussion-request@python.org wrote:

Aside from writing my own numpy storage file container, I am stumped as to how to fix this, or reproduce this in a consistent manner. Any suggestions would be greatly appreciated!

Thank you, Isaac