Disabling the OOB Function

When running benchmarks (such as OSU and GPCNeT), you are advised to add -x UCG_PLANC_UCX_USE_OOB=no to the command line to disable the function of reusing out-of-band (OOB) resources to improve the performance of Hyper MPI tasks.

Example:

mpirun -np 16 -x UCG_PLANC_UCX_USE_OOB=no osu_barrier