Different results on different systems

neuroimaging
fmri

#1

Hi,
I did HCP pipeline preprocessing for same data running on 2 computers:
a computer with LINUX CentOS6 64bit
a computer with LINUX CentOS7 64bit

I processed a subject on both systems, and checking the results.
I noticed that the results were visibly different.
From my less experience, I think that the difference probably come from recon-all step.
What could be the reason for this failure at reproducibility?
Note that I changed the program slightly so as not to use the T2 image.

Thank you so much,

Ayumu


#2

Could be the OS could be the lack of T2 in the second run. Both are plausible explanations.


#3

Hi Chris,
Thank you for your comment!

Yes, the lack of T2 could be plausible explanations. But, I processed a subject with lack of T2 on both systems and got different results.
Then I would like to know how the difference in OS affects the results and what is the solution to replicate in different system.

Best,


#4

You might find this paper relevant: https://www.frontiersin.org/articles/10.3389/fninf.2015.00012/full


#5

Thank you so much!!
This paper is very useful for me!

Best,