Integrates with existing projects

Built with the broader community

Dask is open source and freely available. It is developed in coordination with other community projects like Numpy, Pandas, and Scikit-Learn.


Dask arrays scale Numpy workflows, enabling multi-dimensional data analysis in earth science, satellite imagery, genomics, biomedical applications, and machine learning algorithms.

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Dask dataframes scale Pandas workflows, enabling applications in time series, business intelligence, and general data munging on big data.

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Dask-ML scales machine learning APIs like Scikit-Learn and XGBoost to enable scalable training and prediction on large models and large datasets.

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Familiar for Python users

and easy to get started

Dask uses existing Python APIs and data structures to make it easy to switch between Numpy, Pandas, Scikit-learn to their Dask-powered equivalents.

You don't have to completely rewrite your code or retrain to scale up.

Learn About Dask APIs »
# Arrays implement the Numpy API
import dask.array as da
x = da.random.random(size=(10000, 10000),
                     chunks=(1000, 1000))
x + x.T - x.mean(axis=0)
# Dataframes implement the Pandas API
import dask.dataframe as dd
df = dd.read_csv('s3://.../2018-*-*.csv')
# Dask-ML implements the Scikit-Learn API
from dask_ml.linear_model \
  import LogisticRegression
lr = LogisticRegression(), test)

Scale up to clusters

or just use it on your laptop

Dask's schedulers scale to thousand-node clusters and its algorithms have been tested on some of the largest supercomputers in the world.

But you don't need a massive cluster to get started. Dask ships with schedulers designed for use on personal machines. Many people use Dask today to scale computations on their laptop, using multiple cores for computation and their disk for excess storage.

Learn About Dask Schedulers »


Enabling you to parallelize internal systems

Not all computations fit into a big dataframe.

Dask exposes lower-level APIs letting you build custom systems for in-house applications. This helps open source leaders parallelize their own packages and helps business leaders scale custom business logic.

Supported By

Dask receives generous support from the following institutions, either through direct funding, or by employing core developers.

New-BSD Licensed

© 2018 Dask core developers