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

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rick reynolds
July 13, 2021 03:20PM
Hi Ajay,

Actually, 4 GB is often not enough, but it really depends on the resolution of the researchers's data and the number of time points that they are analyzing. Non-linear registration will often need a bit more RAM, but the RAM usage for the linear regression step of model fitting the time series data varies wildly, and depends heavily on the input data. Sometimes 4 GB is enough, often not.

One thing that is done here is to have some nodes with 4 GB RAM, and some with more. But now the system is getting complicated. Having a separate system with more RAM is also a nice option.

Using different CPUs can have a small effect on the results. One would not expect binary equivalence when jumping between systems, but the results should certainly be close.

Does that seem reasonable?

- rick
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Ram per CPU recommendation

AjaySK July 12, 2021 04:51PM

Re: Ram per CPU recommendation

rick reynolds July 13, 2021 03:20PM

Re: Ram per CPU recommendation

AjaySK July 13, 2021 06:25PM