An Optimized Parallel FDTD Topology for Challenging Electromagnetic Simulations on Supercomputers

Table 2

Comparisons of virtual topology, amount of communication, and computation time on NSCC-TJ.

CPU cores	Virtual topology ()	Amount of communication	Computation time (in seconds)
12	3 × 2 × 2	2520000	6466.68
16	4 × 2 × 2	2880000	6140.56
32	4 × 4 × 2	3600000	2858.97
64	8 × 8 × 1	5040000	1376.85
	8 × 4 × 2	5040000	1379.92
	16 × 2 × 2	7200000	1824.37
96	8 × 6 × 2	5760000	946.52
	8 × 4 × 3	6480000	1500.54
	12 × 4 × 2	6480000	1551.95
	16 × 3 × 2	7560000	1679.42
120	6 × 10 × 2	6480000	702.16
	10 × 6 × 2	6480000	808.65
	5 × 12 × 2	6840000	713.67
	12 × 5 × 2	6840000	863.65
	5 × 6 × 4	7560000	724.90
	6 × 5 × 4	7560000	1076.41
	15 × 4 × 2	7560000	1096.52