The Longwood High-Performance Compute Cluster and LASER will be offline from 9:00 AM EDT (UTC-4) on Monday, June 15, to 5:00 PM EDT (UTC-4) on Friday, June 19, 2026. These systems are hosted at the Massachusetts Green High Performance Computing Center (MGHPCC), which powers down the entire facility for its annual maintenance window.
During this window, no jobs will run and sign-in services will be unavailable. Jobs queued during the outage will start after the maintenance is complete.
To avoid delays, schedule jobs to finish before Monday, June 15, or to start after Friday, June 19.
The maintenance does not affect the O2 cluster or other HMS services.
For more about the facility-wide downtime, see the 2026 MGHPCC power downtime announcement from FAS Research Computing. If you have questions or need help, contact the Research Computing team at HMS at rchelp@hms.harvard.edu.