README.md

```
model: single_linear
config: Int4WeightOnlyConfig
config version: 1
torchao version: 0.14.dev
```

```
import torch
import io

model = torch.nn.Sequential(torch.nn.Linear(32, 256, dtype=torch.bfloat16, device="cuda"))

from torchao.quantization import IntxWeightOnlyConfig, quantize_
from torchao.quantization.granularity import PerGroup

version=1

quant_config = IntxWeightOnlyConfig(
    weight_dtype=torch.int4,
    granularity=PerGroup(32),
    version=version
)
quantize_(model, quant_config)
example_inputs = (torch.randn(2, 32, dtype=torch.bfloat16, device="cuda"),)
output = model(*example_inputs)

# Push to hub
USER_ID = "torchao-testing"
MODEL_NAME = "single-linear"
save_to = f"{USER_ID}/{MODEL_NAME}-IntxWeightOnlyConfig-v{version}-0.14.dev"

from huggingface_hub import HfApi
api = HfApi()

buf = io.BytesIO()
torch.save(model.state_dict(), buf)
api.create_repo(save_to, repo_type="model", exist_ok=False)
api.upload_file(
    path_or_fileobj=buf,
    path_in_repo="model.pt",
    repo_id=save_to,
)

buf = io.BytesIO()
torch.save(example_inputs, buf)
api.upload_file(
    path_or_fileobj=buf,
    path_in_repo="model_inputs.pt",
    repo_id=save_to,
)

buf = io.BytesIO()
torch.save(output, buf)
api.upload_file(
    path_or_fileobj=buf,
    path_in_repo="model_output.pt",
    repo_id=save_to,
)
```