Error/segfault in basic test of CUDA-aware MPI

Specific Domains Julia at Scale
4

Thanks @simonbyrne and @vchuravy! Downgrading the CUDA packages to

(v1.2) pkg> status
    Status `~/.julia/environments/v1.2/Project.toml`
  [c5f51814] CUDAdrv v3.1.0
  [be33ccc6] CUDAnative v2.4.0
  [3a865a2d] CuArrays v1.3.0
  [da04e1cc] MPI v0.10.1

for the Open-MPI case (case 2 above) made the example succeed without errors. :slight_smile:

Do you have any idea how to debug the issue on the Cray System (with cray-mpich/7.7.10; case 1 above)?