[Freesurfer] spot checking results

Dear List,

I have run recon-all -all on the same scan on two different machines likely running two different versions of Linux but in any case the runs were done with different numbers of cores. I haven't done anything fancy to compare that the results are identical except for some spot checks of individual files with md5sum. label/lh.BA4a.label shows up the same on both. mri/wmparc.mgz does not. Your comments would be welcome. Is there something about the non-ascii files, e.g. wmparc.mgz, which would make them show different checksums, e.g. inclusion of a processing time or some such? Do you have experience or suggestions for convincing ourselves that we are getting the same answers on different machines? ???

Thanks - Don