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

Table 2

Processing times for random permutation tests with the GLM for the different implementations.

Number of permutations with GLM	C	OpenMP	CUDA, 1 × GTX 480	CUDA, 3 × GTX 480
1000	25 min	3.5 min	25.2 s	8.4 s
5 000	2 h 5 min	17.5 min	1 min 42 s	33.9 s
10 000	4 h 10 min	35 min	3 min 18 s	65.8 s
50 000	20 h 50 min	2 h 55 min	16 min 30 s	5 min 30 s
100 000	1 day 17 h 40 min	5 h 50 min	33 min	11 min