Merge pull request #2 from thiswillbeyourgithub/mention-example

mention example
This commit is contained in:
wassname (Michael J Clark)
2025-09-11 15:42:41 +08:00
committed by GitHub
+11 -9
View File
@@ -1,15 +1,20 @@
# activation_store
Utility library to persistently store transformer activations on disk.
Utility library to persistently store transformer activations on disk as huggingface dataset.
These activations can be quite large (layers x batch x sequence x hidden_size), so generating them to disk helps avoid out of memory errors.
As these activations can be quite large (layers x batch x sequence x hidden_size), generating them to disk helps avoid out of memory errors.
Install using
Install using
```
pip install git+https://github.com/wassname/activation_store.git
```
Example
## Examples
Full examples can be found in the [nbs folder](./nbs).
```py
layer_groups = {'mlp.down_proj': [
'model.layers.21.mlp.down_proj',
@@ -25,7 +30,7 @@ layer_groups = {'mlp.down_proj': [
'model.layers.23.mlp.up_proj']}
# collect activations into a huggingface dataset
f = activation_store(ds, model, layers=layer_groups)
f = activation_store(loader=ds, model=model, layers=layer_groups)
f
# > Generating train split: 0 examples [00:00, ? examples/s]
# Dataset({
@@ -33,7 +38,7 @@ f
# num_rows: 20
# })
# it has this sgaoe
# it has this shape
ds_a = Dataset.from_parquet(str(f)).with_format("torch")
ds_a[0:2]['hidden_states'].shape # [batch, layers, tokens, hidden_states]
# torch.Size([2, 25, 1, 896])
@@ -47,9 +52,6 @@ git clone https//github.com/wassname/activation_store.git
uv sync
```
see examples in `nbs` folder.
## TODO:
- [x] test compression: it's not worth the [complexity](https://github.com/EleutherAI/elk/blob/84e99a36a5050881d85f1510a2486ce46ac1f942/elk/extraction/extraction.py#L382)