Added extra benchmarking models.

tests/benchmarking/bench_500x500x500.in

@@ -0,0 +1,7 @@
+#domain: 0.5 0.5 0.5
+#dx_dy_dz: 0.001 0.001 0.001
+#time_window: 3e-9
+
+#waveform: gaussiandotnorm 1 900e6 MySource
+#hertzian_dipole: x 0.05 0.05 0.05 MySource
+#rx: 0.05 0.05 0.05

tests/benchmarking/bench_600x600x600.in

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+#domain: 0.6 0.6 0.6
+#dx_dy_dz: 0.001 0.001 0.001
+#time_window: 3e-9
+
+#waveform: gaussiandotnorm 1 900e6 MySource
+#hertzian_dipole: x 0.05 0.05 0.05 MySource
+#rx: 0.05 0.05 0.05

tests/benchmarking/bench_700x700x700.in

@@ -0,0 +1,7 @@
+#domain: 0.7 0.7 0.7
+#dx_dy_dz: 0.001 0.001 0.001
+#time_window: 3e-9
+
+#waveform: gaussiandotnorm 1 900e6 MySource
+#hertzian_dipole: x 0.05 0.05 0.05 MySource
+#rx: 0.05 0.05 0.05

tests/benchmarking/bench_800x800x800.in

@@ -0,0 +1,7 @@
+#domain: 0.8 0.8 0.8
+#dx_dy_dz: 0.001 0.001 0.001
+#time_window: 3e-9
+
+#waveform: gaussiandotnorm 1 900e6 MySource
+#hertzian_dipole: x 0.05 0.05 0.05 MySource
+#rx: 0.05 0.05 0.05