Posts by Sarah Johnson
Processing a 250 TB dataset with Coiled, Dask, and Xarray
- 05 September 2023
We processed 250TB of geospatial cloud data in twenty minutes on the cloud with Xarray, Dask, and Coiled. We do this to demonstrate scale and to think about costs.

How well does Dask run on Graviton?
- 05 May 2023
ARM-based processors are known for matching performance of x86-based instance types at a lower cost, since they consume far less energy for the same performance. It’s not surprising then that some companies, like Honeycomb, are switching their entire infrastructure to ARM.

Just in time Python environments
- 23 February 2023
Docker is a great tool for creating portable software environments, but we found it’s too slow for interactive exploration. We find that clusters depending on docker images often take 5+ minutes to launch. Ouch.