torch-max-mem

This package provides decorators for memory utilization maximization with PyTorch and CUDA by starting with a maximum parameter size and applying successive halving until no more out-of-memory exception occurs.

💪 Getting Started

Assume you have a function for batched computation of nearest neighbors using brute-force distance calculation.

import torch

def knn(x, y, batch_size, k: int = 3):
    return torch.cat(
        [
            torch.cdist(x[start : start + batch_size], y).topk(k=k, dim=1, largest=False).indices
            for start in range(0, x.shape[0], batch_size)
        ],
        dim=0,
    )

With torch_max_mem you can decorate this function to reduce the batch size until no more out-of-memory error occurs.

import torch
from torch_max_mem import maximize_memory_utilization


@maximize_memory_utilization()
def knn(x, y, batch_size, k: int = 3):
    return torch.cat(
        [
            torch.cdist(x[start : start + batch_size], y).topk(k=k, dim=1, largest=False).indices
            for start in range(0, x.shape[0], batch_size)
        ],
        dim=0,
    )

In the code, you can now always pass the largest sensible batch size, e.g.,

x = torch.rand(100, 100, device="cuda")
y = torch.rand(200, 100, device="cuda")
knn(x, y, batch_size=x.shape[0])

🚀 Installation

The most recent release can be installed from PyPI with:

$ pip install torch_max_mem

The most recent code and data can be installed directly from GitHub with:

$ pip install git+https://github.com/mberr/torch-max-mem.git

To install in development mode, use the following:

$ git clone git+https://github.com/mberr/torch-max-mem.git
$ cd torch-max-mem
$ pip install -e .

👐 Contributing

Contributions, whether filing an issue, making a pull request, or forking, are appreciated. See CONTRIBUTING.md for more information on getting involved.

👋 Attribution

Parts of the logic have been developed with Laurent Vermue for PyKEEN.

⚖️ License

The code in this package is licensed under the MIT License.

🍪 Cookiecutter

This package was created with @audreyfeldroy's cookiecutter package using @cthoyt's cookiecutter-snekpack template.

🛠️ For Developers

See developer instrutions

The final section of the README is for if you want to get involved by making a code contribution.

🥼 Testing

After cloning the repository and installing tox with pip install tox, the unit tests in the tests/ folder can be run reproducibly with:

$ tox

Additionally, these tests are automatically re-run with each commit in a GitHub Action.

📖 Building the Documentation

$ tox -e docs

📦 Making a Release

After installing the package in development mode and installing tox with pip install tox, the commands for making a new release are contained within the finish environment in tox.ini. Run the following from the shell:

$ tox -e finish

This script does the following:

1. Uses Bump2Version to switch the version number in the setup.cfg and src/torch_max_mem/version.py to not have the -dev suffix
2. Packages the code in both a tar archive and a wheel
3. Uploads to PyPI using twine. Be sure to have a .pypirc file configured to avoid the need for manual input at this step
4. Push to GitHub. You'll need to make a release going with the commit where the version was bumped.
5. Bump the version to the next patch. If you made big changes and want to bump the version by minor, you can use tox -e bumpversion minor after.