I am using FSL 3.0 to conduct a second level analysis of my "pictures
experiment" data. I have nine contrasts done on the first level and
twelve contrasts on the second level. Generating one cope1.gfeat
directory on the second level is taking about 24 hours of processing.
So, doing the whole analysis looks like it should take about nine days
(we are on day 3 now.)
I am going to be doing the second level analysis of my "faces" data
later this week and was thinking of ways to speed it up. Since I am
running processes on a clustered machine, I was thinking that I could
generate twelve .fsf files to represent each of my second level
contrasts separately. Then I was thinking that I could run them all in
parallel and reduce the processing time to 24 hours or less total. Is
there anything that would prevent me from running multiple, parallel
second level contrasts?
I'm also going to see if we can get FSL 3.1 on this machine. I vaguely
recall that 3.1 might have the capacity to split up processes into
threads that could be done in parallel automatically? Is that right?
And, I was thinking of using just the 1st stage FLAME in FSL 3.1 due to
the speed up and small accuracy sacrifice. Is my thinking here good?
As always, thanks for the help with this.