Brock Palen <bro...@umich.edu> writes: > We managed to have another user hit the bug that causes collectives (this > time MPI_Bcast() ) to hang on IB that was fixed by setting: > > btl_openib_cpc_include rdmacm
Could someone explain this? We also have problems with collective hangs with openib/mlx4 (specifically in IMB), but not with psm, and I couldn't see any relevant issues filed. However, rdmacm isn't an available value for that parameter with our 1.4.3 or 1.5.3 installations, only oob (not that I understand what these things are...).
