For GPU Winter School powered by Moscow State University cluster
"Lomonosov", the OpenMPI 1.7 was built to test and popularize CUDA
capabilities of MPI. There is one strange warning I cannot understand:
OpenMPI runtime suggests to initialize CUDA prior to MPI_Init. Sorry,
but how could it be? I thought processes are spawned during MPI_Init,
and such context will be created on the very first root process. Why
do we need existing CUDA context before MPI_Init? I think there was no
such error in previous versions.