[Freesurfer] correcting defect

Hi all,

I tried to use FreeSurfer version 6.0.0 to process fifteen subjects, but half of the subjects was stuck at the ‘Correcting Defect’ step. However, when I changed to FreeSurfer version 5.3.0, the ‘Correcting defect’ step finished successfully. Is it possibility that the unsuccessful ‘Correcting Defect’ step is caused by the different versions of Freesurefer?

In addition, when I added the flag -parallel -openmp 30 based on the version 6.0.0, the recon-all –all runtime still need 20+ hours. It seems that the parallel processing did not reduce the processing time. I wonder why the parallel processing did’t save time?

Any help would be greatly appreciated.

Meng