Cannot save any torch tensor or `nn_module` about torch

[dfalbel]

Hi @rdinnager,

Thanks for reporting.

That's weird, I'd assume this is a mismatch between the torch version and the safetensors versions, as at some point I think I saw some similar issue.

Can you try updating your safetensors package. I just tried lates commit from torch + (CRAN or latest commit) safetensors and they seem to work correctly.

[rdinnager]

I am using the latest version of both torch and safetensors from CRAN:

packageVersion("safetensors")
#> [1] '0.1.2'
packageVersion("torch")
#> [1] '0.11.0'

I'm thinking now that I actually need the development version of torch to work properly, after looking through the recent commit history. I will try that!

[dfalbel]

ohhh, I think that might be the case. You are right, you might need to downgrade safetensors or use the dev version of torch. I'm going to make a new torch release soon.

[rdinnager]

Yes, I decided to wait until the new release and just use options(torch.serialization_version = 2) in the mean time. I find the new precompiled cuda binary method of installation so convenient I just don't want to bother trying to install from source at the moment, which would require me installing the compatible CUDA locally (and I'm not up for that right now ;) ).