I have a problem running BW benchmark on 100 rank cluster after r18551.
The BW is mpi_p that runs mpi_bandwidth with 100K between all pairs.
#mpirun -np 100 -hostfile hostfile_w ./mpi_p_18549 -t bw -s 100000
BW (100) (size min max avg) 100000 576.734030 2001.882416
#mpirun -np 100 -hostfile hostfile_w ./mpi_p_18551 -t bw -s 100000
mpirun: killing job...
( it hangs even after 10 hours ).
It doesn't happen if I run --bynode or btl openib,self only.