Running Example problem

[Elbehery]

I tried to run the example, I have a problem with ZMQ lib, below is the stack trace :-

mustafa@mustafa-HP-ProBook-4540s:~/Documents/ParameterServer/parameter_server/script$ ./local.sh 1 4 ../config/rcv1/batch_l1lr.conf
ps(4874): Operation not permitted
ps(4875): Operation not permitted
ps(4876): Operation not permitted
ps(4877): Operation not permitted
ps(4878): Operation not permitted
F1208 15:59:26.215294 10194 van.cc:64] Check failed: zmq_bind(receiver_, addr.c_str()) == 0 bind to tcp://:8100 failed: Address already in use
** Check failure stack trace: ***
@ 0x7f9dec983daa (unknown)
@ 0x7f9dec983ce4 (unknown)
@ 0x7f9dec9836e6 (unknown)
@ 0x7f9dec986687 (unknown)
F1208 15:59:26.216895 10196 van.cc:64] Check failed: zmq_bind(receiver_, addr.c_str()) == 0 bind to tcp://:8201 failed: Address already in use
@ 0x4e1edb PS::Van::bind()
** Check failure stack trace: ***
@ 0x4e5030 PS::Van::init()
@ 0x7fb9cbfdddaa (unknown)
@ 0x4191a0 PS::Postoffice::run()
@ 0x7fb9cbfddce4 (unknown)
@ 0x40a0c4 main
@ 0x7fb9cbfdd6e6 (unknown)
@ 0x7f9deb771ec5 (unknown)
@ 0x7fb9cbfe0687 (unknown)
@ 0x40e40d (unknown)
@ 0x4e1edb PS::Van::bind()
@ 0x4e5030 PS::Van::init()
@ (nil) (unknown)
@ 0x4191a0 PS::Postoffice::run()
@ 0x40a0c4 main
@ 0x7fb9cadcbec5 (unknown)
@ 0x40e40d (unknown)
@ (nil) (unknown)
F1208 15:59:26.221395 10198 van.cc:64] Check failed: zmq_bind(receiver_, addr.c_str()) == 0 bind to tcp://:8203 failed: Address already in use
** Check failure stack trace: ***
@ 0x7f4508fd5daa (unknown)
@ 0x7f4508fd5ce4 (unknown)
@ 0x7f4508fd56e6 (unknown)