Megatron use Metadata costom attr, but torch2.9 forbid it #2345
Description
Megatron use Metadata costom attr, but torch2.9 forbid it.
AttributeError: 'Metadata' object has no attribute 'mcore_data'. Did you mean: 'storage_data'“” like this err.
https://github.com/pytorch/pytorch/blob/v2.9.1/torch/distributed/checkpoint/filesystem.py#L755 in torch2.9, the costom attr will be lose, but torch do not fix it. pytorch/pytorch#162953.
It will be fixed in Megatron?