🟡 Open MPI Compatibility Matrix
Open MPI ↔ UCX ↔ OFED ↔ CUDA ↔ ROCm GPU-aware MPI compatibility. Sources: Open MPI Release Notes.
API: GET /api/v1/openmpi
| Open MPI | UCX Range | PMIx | OFED Range | CUDA Range | ROCm Range | Min hwloc | Transports | Status | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 5.0.3 | 1.14 – 1.17 | 4.2.x | 5.4 – 24.01 | 11.0 – 12.5 | 5.3 – 6.1 | 2.1 |
|
Active | PMIx 4 required; PRRTE used as default process launcher. Slurm >= 22.05 recommended. |
| 5.0.2 | 1.14 – 1.16 | 4.2.x | 5.4 – 23.10 | 11.0 – 12.4 | 5.3 – 6.0 | 2.1 |
|
Active | — |
| 5.0.1 | 1.13 – 1.15 | 4.1.x | 5.4 – 23.07 | 11.0 – 12.3 | 5.2 – 5.7 | 2.0 |
|
Active | — |
| 4.1.6 | 1.9 – 1.15 | 3.2.x / 4.x | 5.2 – 23.10 | 10.2 – 12.3 | 4.5 – 5.7 | 1.11 |
|
Active | Long-term stable series; widely deployed in HPC clusters. Still actively maintained. |
| 4.1.5 | 1.9 – 1.14 | 3.2.x | 5.2 – 23.07 | 10.2 – 12.2 | 4.5 – 5.6 | 1.11 |
|
Active | — |
| 4.1.4 | 1.9 – 1.13 | 3.2.x | 5.0 – 5.8 | 10.1 – 11.8 | 4.5 – 5.4 | 1.11 |
|
EOL | — |
| 4.1.3 | 1.9 – 1.12 | 3.1.x | 5.0 – 5.7 | 10.1 – 11.7 | 4.5 – 5.3 | 1.11 |
|
EOL | — |
| 4.0.7 | 1.7 – 1.11 | 2.2.x | 4.7 – 5.4 | 9.2 – 11.4 | N/A | 1.11 |
|
EOL | EOL branch; critical security fixes only through community |
| 3.1.6 | 1.4 – 1.9 | 2.1.x | 4.7 – 5.2 | 9.0 – 11.0 | N/A | 1.11 |
|
EOL | EOL; upgrade to 4.1.x or 5.0.x strongly recommended |