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
