oh sorry, I didn't see the versions in there. It's hard to tell from a single screenshow, but yes, you are always better off using the same hardware for your whole study
cheers, Bruce On Sat, 13 Feb 2010, Andreas Berger wrote: > Hi, thank you for the reply, > > >> what version are you running? The 32 and 64 bit versions will definitely >> have differences - it's unavoidable. > > On Debian: CentOS 4 x86_64 stable v4.5.0 > On Suse: CentOS 4 stable v4.5.0 > > are the screenshots within the expected range of random difference or do i > have to assume that one of them must be wrong? > and, would you recommend using either only the 32 bit version or only the 64 > bit version for all of our processing? > > > > > On Sat, 13 Feb 2010 10:26:36 -0500 (EST) > Bruce Fischl <fis...@nmr.mgh.harvard.edu> wrote: > >> Hi Andreas, >> >> what version are you running? The 32 and 64 bit versions will definitely >> have differences - it's unavoidable. In the newest version we did eliminate >> some of the randomness that reduced reproducibility though. >> >> Bruce >> >> On Sat, 13 Feb 2010, Andreas Berger >> wrote: >> >>> Hi Freesurfers, >>> >>> we have FreeSurfer running on 10 computers: >>> >>> 7 computers with suse 10 32bit, freesurfer 4.5.0 32bit >>> 3 computers with debian 5 64bit, freesurfer 4.5.0 64bit >>> >>> recon-all -all -i finished on all of them without any errors, so i assumed >>> the best. >>> out of curiousity i processed one of the subjects on both systems, and >>> checking the results in tkmedit and tksurfer i noticed that they are >>> visibly different. (thus in this case one of the surfaces does not look >>> quite ok, other subjects processed on that system look fine however, i >>> haven't looked through all of them yet). screenshots attached. also, i just >>> started recon-all -all -s bert on both systems, so i can compare them to >>> the original bert. >>> >>> what could be the reason for this failure at reproducibility? >>> >>> >>> >>> > > > _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
