11.4. Collective operations

Open MPI provides a number of components implementing collective operations and significant flexbility to tune collective operations. This section documents the available components and gives for some components additional information on how to utilize them.

• 11.4.1. Available Collective Components
• 11.4.2. The tuned Component
• 11.4.3. The ucc Component
• 11.4.4. Working with the acoll Collective Component
• 11.4.5. XPMEM Hierarchical Collectives (xhc)