p Test allreduce
$ ${bindir:=.}/../../../bin/smpirun -map -hostfile ../hostfile_coll -platform ../../../examples/platforms/small_platform.xml -np 16 --log=xbt_cfg.thres:critical ${bindir:=.}/reduce_coll --log=smpi_kernel.thres:warning --log=smpi_coll.thres:error
-> [0.000000] [surf_config/INFO] Switching workstation model to compound since you changed the network and/or cpu model(s)
+> [0.000000] [surf_config/INFO] Switching host model to compound since you changed the network and/or cpu model(s)
> [0] rcvbuf=[1920 1936 1952 1968 1984 2000 2016 2032 2048 2064 2080 2096 2112 2128 2144 2160 ]
> [0] second sndbuf=[0 ]
> [0] sndbuf=[0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ]
