i have a user that's claiming when two ranks on the same node want to talk with each other, they're using the NIC to talk rather then just talking directly.
i've never had to test such a scenario. is there a way for me to prove one way or another whether two ranks are talking through say the kernel (or however it actually works) or using the nic? i didn't set any flags when i compiled openmpi to change this. i'm running ompi 3.1, pmix 2.2.1, and slurm 18.05 running atop omnipath _______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
