On Tue, Sep 6, 2011 at 1:25 PM, Alexander Lebedev <awl...@rambler.ru> wrote: > Thank you very much for your response! > > May I also ask how about running CUDA and non-CUDA analyses for the same > dataset? I am asking because I don't have CUDA support on one of my > machines as well (It has ATI videocard). I have found a thread on that > topic > (http://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg16832.html) > and even asked the author - and the question still hangs... What do you > think?
If you require bit-for-bit agreement, then you basically can't change _anything_ about the computer configuration. It is the nature of floating point arithmetic that a+(b+c) != (a+b)+c There's nothing we can do about this - it's how computers work. Now, the results still ought to agree in some statistical sense, but I never got that far with verifying it across a variety of brains and platforms. Richard _______________________________________________ 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.
