How to change the model weights in safetensors?

[JulioZhao97]

Feature request

For example, I want to change some weight with shape [K,K,C] into [K,K,C/2], how can I achieve this hacking?

Motivation

N/A

Your contribution

N/A

[Narsil]

Load the file, modify the tensors, resave the file.

This operation is destructive (you have less data than before) therefore doing a full rewrite of the file is necessary (there cannot be any holes in safetensors files)