Urban Traffic Noise Maps under 3D Complex Building Environments on a Supercomputer

Table 1

Expansibility of algorithm.

Step length between receiver points /m	Number of compute nodes	Computing time /s
10	1	201
	2	109
	3	73
	4	61
	5	53
8	1	310
	2	160
	3	113
	4	94
	5	77
6	1	538
	2	286
	3	199
	4	169
	5	140
4	1	1204
	2	635
	3	444
	4	368
	5	312
2	1	4766
	2	2568
	3	1821
	4	1480
	5	1260