$t_{s t e p}^{c}$ (msecs)	$t_{s t e p}^{f}$ (usecs)	$N^{f}$	Execution time (msecs)		Speedup
$t_{s t e p}^{c}$ (msecs)	$t_{s t e p}^{f}$ (usecs)	$N^{f}$	Sequential	CUDA	Speedup
10.0	100.0	2560	40.786	1.875	21.7
5.0	50.0	5120	72.57	2.728	26.6
2.0	20.0	12800	159.665	5.043	31.7
1.0	10.0	25600	289.96	9.714	30.0