Analysis of Electromagnetic Propagation from MHz to THz with a Memory-Optimised CPML-FDTD Algorithm

Table 6

Amount of allocated memory used by the optimised version in double and single precision, for the different numerical experiments. The used memory is reported by the operating system (Linux kernel 3.13).

Numerical experiment	Double-C	Single-C	Double-E	Single-E
Empty space (20 GHz)
+Optimised	691.6 MB	353.2 MB	3.7 GB	1.9 GB
Nonoptimised	846.7 MB	431.1 MB	4.5 GB	2.3 GB
Parabolic plate (20 GHz)
+Optimised	691.8 MB	353.6 MB	15.9 GB	8.0 GB
Nonoptimised	844.8 MB	419.9 MB	19.7 GB	9.8 GB
Waveguide (100 THz)
+Optimised	27.3 MB	14.2 MB	2.4 GB	1.2 GB
Nonoptimised	32.3 MB	16.7 MB	2.9 GB	1.5 GB