Fast Random Permutation Tests Enable Objective Evaluation of Methods for Single-Subject fMRI Analysis

Table 3

Processing times for random permutation tests with 2D CCA for the different implementations.

Number of permutations with 2D CCA	C	OpenMP	CUDA, 1 × GTX 480	CUDA, 3 × GTX 480
1000	1 h 40 min	14 min 50 s	22.2 s	7.4 s
5 000	8 h 20 min	1 h 14 min	1 min 24 s	28 s
10 000	16 h 37 min	2 h 28 min	2 min 42 s	54 s
50 000	3 days 11 h	12 h 22 min	13 min 30 s	4 min 30 s
100 000	6 days 22 h	24 h 43 min	27 min	9 min