According to the FBA multi-tissue CSD pipeline documentation, “for about 500,000 fixels in the template analysis fixel mask and a typical tractogram defining the pairwise connectivity between fixels, 128GB of RAM is a typical memory requirement.”
Now, I checked my fixel mask, and I have 682,874 fixels, yet I my computer has only 32GB of RAM. My question is, is it practically impossible to perform the fixel analysis in my scenario, or will it just be sluggish and take a long time?
I’ve also noticed that the more the analysis progresses, the slower the rate of progression gets. I’m assuming that’s because the RAM is holding on to whatever is being calculated and adding onto it? If so, does that mean that there’s a higher chance of crashing the more progress is made?
I understand there are ways to reduce RAM requirements, but I was just wondering if its possible to go through with the analysis without resorting to that.
Sorry for the basic question, I’m not very computer savvy