New CAC Billing Model for Red Cloud and Seneca, June 25th, 2026

The Cornell Center for Advanced Computing has transitioned to a flexible Compute Unit Bundle billing model starting on June 25, 2026. Please see CAC Portal Rates (login required) for more details.

Remaining balances from Red Cloud Subscriptions automatically convert to compute units on a 1:1 basis.

CAC Technical Documentation

These pages provide Cornell Center for Advanced Computing (CAC) users with technical documentation and other support information. If you want to join or start a CAC project, use the CAC Portal at portal.cac.cornell.edu to view, request, and manage resources. See CAC Portal instructions for the details. Please remember to acknowledge CAC support in your publications.

Help Desk and Operating Status

Technical Documentation

General Computing Resources

High Performance Computing (HPC) Clusters

Data Storage

Data Transfer

Training & Education