AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

History of AFNI updates  

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January 10, 2018 09:11PM
I'm confused by your units. Is 0.0123 (the threshold) in percent? That is, a fractional change of 1.23 * 10-4? That isn't much to worry about.

The reason is probably that the calculations are carried out in a different order in different runs, so that the roundoff errors accumulate differently. And then the optimizer will stop at slightly different points in each stage (patch and level), and so the small changes will accumulate to some extent.
Subject Author Posted

3dQwarp parallel processing problem Attachments

MRahmati January 09, 2018 02:09PM

Re: 3dQwarp parallel processing problem

RWCox January 10, 2018 09:11PM

Re: 3dQwarp parallel processing problem Attachments

tsprague January 11, 2018 10:44AM