MVAPICH is a high-performance implementation of the MPI (Message Passing Interface) standard with support for both Unified Communication X (UCX) and Open Fabric Interfaces (OFI).

The MVAPICH-SHS variant comes with the CXI provider support for Slingshot Host Systems.

In case the actual netmod is not correctly recognized at run time, activate it using either MPICH_CH4_NETMOD=ucx or MPICH_CH4_NETMOD=ofi.

Note that the actual GNU compilers (i.e., gcc_linux-64, gfortran_linux-64 and gxx_linux-64 for linux-64, or their equivalent for other platforms) have to be added manually since they are not automatically installed in the Conda environment as dependencies.