Accelerated Computing in Magnetic Resonance Imaging: Real-Time Imaging Using Nonlinear Inverse Reconstruction

Table 4

Computation time in and parallel efficiency of the Fourier transform of 2D vectors of side length calculated using the cuFFT batched mode.

	1 GPU	2 GPUs		3 GPUs		4 GPUs
	384	429	230	0.93	189	0.76	152	0.71
432	532	280	0.95	228	0.78	178	0.75
486	730	387	0.94	320	0.76	251	0.73
512	555	288	0.96	233	0.79	179	0.78
784	1699	865	0.98	697	0.81	529	0.80