2 p all 2 all test, only fat pipe switch is used concurrently
4 $ simdag/network/mxn/test_intra_all2all ${srcdir:=.}/simdag/network/mxn/platform_4p_1switch.xml --surf-path=${srcdir} --log=sd_kernel.thres=warning
5 > [0.000000] [surf_workstation/INFO] surf_workstation_model_init_ptask_L07