9
1
50	31118	98.6900	0.4899
2
125	31118	39.1900	0.4208
125	33960	79.5400	0.5719
3
250	31118	19.5500	0.4801
250	33960	40.0300	0.4832
250	69529	85.2400	0.7779
3
500	31118	9.7900	0.5051
500	33960	19.6100	0.4718
500	69529	42.4900	0.7584
4
1000	31118	5.5600	0.9549
1000	33960	9.8800	0.6240
1000	69529	21.3600	0.8882
1000	294974	62.4000	2.5212
4
2000	31118	4.0300	1.6343
2000	33960	5.6200	0.9636
2000	69529	11.2500	1.2898
2000	294974	33.6100	3.2577
1
5000	31118	4.88	3.8354
4
4000	33960	4.0900	1.6713
4000	69529	7.1500	2.1151
4000	294974	19.6200	4.8258
4000	844175	63.7900	11.4256
4
8000	33960	4.65	3.3915
8000	69529	6.4700	3.8500
8000	294974	15.7400	8.2277
8000	844175	46.1300	18.7788

Fitting results for exchangeTime = a + b*nspike
#cpu  a   b
50
125
250  0.20  8.1e-6
500  0.20  8.3e-6
1000 0.38  7.3e-6
2000 0.67  8.7e-6
4000 1.27  1.2e-5
8000 2.62  1.9e-5