Application Architecture¶

Keystone’s core architecture is organized into three layers: user presentation, application logic, and data storage. The presentation layer provides general user-facing interfaces. The application layer enforces business logic and coordinates HPC resource allocations across clusters. The storage layer provides persistence for application data and user-submitted content.

Integration with HPC hardware is handled by a lightweight daemon application, which provides a scheduler-agnostic interface for managing the underlying cluster(s). This enables Keystone to efficiently manage HPC resources across diverse computational environments.

The diagram and sections below provide a detailed overview of the components in a typical Keystone deployment. Traditional enterprise services (e.g., LDAP, SSO, SMTP) are omitted here for simplicity.