MPIPreferences.use_system_binary(vendor="cray") fails on Piz Daint

[omlins]

julia> using MPIPreferences

julia> MPIPreferences.use_system_binary(vendor="cray")
ERROR: ArgumentError: Collection is empty, must contain exactly 1 element
Stacktrace:
 [1] only
   @ ./iterators.jl:1517 [inlined]
 [2] cray_mpi(libs::Vector{SubString{String}})
   @ MPIPreferences.CrayParser /scratch/snx3000tds/julia/omlins/daint-gpu/packages/MPIPreferences/43Ix2/src/parse_cray_cc.jl:28
 [3] analyze_cray_cc()
   @ MPIPreferences.CrayParser /scratch/snx3000tds/julia/omlins/daint-gpu/packages/MPIPreferences/43Ix2/src/parse_cray_cc.jl:63
 [4] use_system_binary(; library_names::Vector{String}, mpiexec::String, abi::Nothing, vendor::String, export_prefs::Bool, force::Bool)
   @ MPIPreferences /scratch/snx3000tds/julia/omlins/daint-gpu/packages/MPIPreferences/43Ix2/src/MPIPreferences.jl:175
 [5] top-level scope
   @ REPL[3]:1

[omlins]

@simonbyrne : would you know how to fix this?

[simonbyrne]

@JBlaschke: any ideas?

[JBlaschke]

@JBlaschke: any ideas?

Yep! I'll make a PR to fix this when I get a moment with stable internet to test on Perlmutter (currently traveling near Frankfurt)

[omlins]

Thanks @JBlaschke !!