Peter, Thanks for this info. The Mac OS versions compared in the paper were 10.5 and 10.6 (Leopard and Snow Leopard). One of the major changes between these two versions was the switch from a 32b kernel to a 64b kernel (whereas Snow Leopard and Lion both use a 64b kernel). I havent been able to definitely say that the math libs changed, but it would seem to account for the differences in Mac OS version results in the paper. A 32b build of freesurfer (for the Mac) was used in both tests so kernel differences might not matter but are suspect.
Nick > We run things on an Xgrid cluster that is now a mixture of Macs running > Snow Leopard (10.6.8) and Lion (10.7.x). We found the results given from > asegstats2table and aparcstats2table are identical after running 100 > subjects on both Mac OS X 10.7.4 and 10.6.8 with Freesurfer 5.1. I also > ran a few subjects on the cluster and on individual computers (not on the > cluster so to speak) and the results are identical. > > Best, > Peter > > >> Hi, >> >> The paper entitled >> >> “The Effects of FreeSurfer Version, Workstation Type, >> and Macintosh Operating System Version on Anatomical >> Volume and Cortical Thickness Measurements”, >> PLoSONE, Vol 7(6), e38234 (2012) >> >> may be of interest to all of you. It can be found at: >> >> http://dx.plos.org/10.1371/journal.pone.0038234 >> >> Cheers, >> Ed > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
