Troubleshooting

dlopen failed is triggered by OpenMPI

A warning similar to

--------------------------------------------------------------------------
Sorry!  You were supposed to get help about:
    dlopen failed
But I couldn't open the help file:
    <someJuliaPath>/share/openmpi/help-mpi-common-cuda.txt: No such file or directory.  Sorry!
--------------------------------------------------------------------------

hints at missing CUDA libraries, which are optional for Trixi.jl. You can use the environment variable OMPI_MCA_mpi_cuda_support=0 to prevent attempting to load the library.