1612972 : MPI module with support for both CUDA and HDF5¶

Created: 2026-06-29T15:47:15Z - current status: new¶

Anonymized Summary: A user inquires whether there is an MPI module available on the Maxwell system that simultaneously supports GPU-aware MPI (CUDA integration) and a parallel HDF5 module. Currently, two configurations exist: 1. openmpi/4.1.8-cuda13.0 + hdf5/1.12.1 → Provides GPU-aware MPI but uses serial HDF5. 2. mpi/openmpi-x86_64 + hdf5-openmpi/1.12.1 → Supports parallel HDF5 but lacks GPU-aware MPI.

The user requires both features for running WarpX efficiently.

---

Suggested Solution/Next Step: Check if a combined module exists (e.g., hdf5-openmpi-cuda) or consult Maxwell’s documentation/support team to confirm compatibility. Alternatively, manually compile OpenMPI with CUDA awareness alongside hdf5-openmpi, ensuring linkage to the same MPI library. Verify dependencies via:

module avail | grep -i "hdf5.*mpi\|mpi.*cuda"

or contact Maxwell administrators for a pre-built solution.

(No personal data retained; replaced name with "[USER]")

Sources: None (context not applicable).