This week's colloquium: "SWIFT: A Modern Highly-parallel Gravity and Smoothed Particle Hydrodynamics Solver for Astrophysical and Cosmological Applications" by James Willis from SciNet. The Compute Ontario Colloquia are weekly Zoom presentations on Advanced Research Computing, High Performance Computing, Research Data Management, and Research Software topics, delivered by staff from three Compute Ontario consortia (CAC, SciNet, SHARCNET) and guest speakers. The colloquia are one hour long and include time for questions. No registration is required. Most presentations are recorded and uploaded to the hosting consortium video channel.