Dear freesurfers, i was running Freesurfer on the same subject on two independent Computers. The first Computer PC1has 2 physical Intel processors with 2 logical each - (dual core) - 1.6GHz with 4Gb Ram and the second PC2 has 2 physical Intel processors with 4 logical - (quad core) - 3 GHz with 8 Gb Ram. After running on these two Computers - i start at the exactly same time - i got a surprising result: My faster Computer PC2 took 41h to run the subject and the slower Computer took 31h. I wonder if somebody have some comment on this, because i have no idea what is wrong ( When i have the Linux System Monitor on, watching the CPU History, it seems that the slower PC hat a more effective occupation/usage than the faster - switching faster between one CPU and the other one...) Another small question: In the final segmentation table, i noticed that there are some small diferences between the results of PC1 and PC2: for ex.: PC1:ctx - rh-caudalmiddle frontal = 5029 5029 PC2:ctx - -"- 5360 5360 , so a diference of ~6%. I guess these are variations due to the algorithm.. Are there some established limits for that diferences? Thanks for help,
Thomas