Clients	sites	p	Obj. value	CPU time (s)	Proposed model
Clients	sites	p	Obj. value	Model OpMP	Proposed model
100	100	5	6738.74	234.84	3.72
		10	5762.02	493.10	10.27
		20	4652.52	199.42	42.65
150	150	5	9729.60	1441.93	30.81
		10	8244.19	6506.53	80.10
		20	6732.30	14786.42	839.16
		30	5659.13	23212.06	3847.86
200	200	5	12802.07	7529.43	86.71
		10	12263.61	32317.89	152.24
		20	9953.02	>12 h	2780.10
		30	8751.56	>12 h	36415.87
		40	n/a	>12 h	>12 h