> == pivot=0 : pingpong [0] <--> [1]
> == pivot=1 : pingpong [1] <--> [2]
> == pivot=2 : pingpong [2] <--> [3]
> [0.000000] [surf_config/INFO] Switching workstation model to compound since you changed the network and/or cpu model(s)
> [0.000000] [xbt_cfg/INFO] Configuration change: Set 'maxmin/precision' to '1e-9'
> == pivot=0 : pingpong [0] <--> [1]
> == pivot=1 : pingpong [1] <--> [2]
> == pivot=2 : pingpong [2] <--> [3]
> [0.000000] [surf_config/INFO] Switching workstation model to compound since you changed the network and/or cpu model(s)
> [0.000000] [xbt_cfg/INFO] Configuration change: Set 'maxmin/precision' to '1e-9'