[Freesurfer] Tracula Memory Requirements

Hi Freesurfers,

I've been getting a memory allocation error (below) when running trac prep and trac paths on my computer with 6 gb ram. Since I was able to run these steps on a computer with 16 gb, I want to know, what is the minimum memory requirement for running tracula? Is the memory allocation error resulting from a lack of memory or is there something else going on that I am not aware of?

Error:

Loading BEDPOST parameter samples from /usr/local/freesurfer5.1/subjects/1052/dmri.bedpostX MRIalloc(256, 256, 50): could not allocate 262144 bytes for 431th slice

Thanks always,

Ammar Moiyadi, BS Professional Research Assistant Department of Psychiatry University of Colorado Anschutz Medical Campus 303-724-5490