Dear Albert, Implementing a GPU version of Possum is on our todo list but we don't have one available at the moment. It can be parallelized over multiple CPUs that are run as a cluster though. All the best, Mark From: FSL - FMRIB's Software Library <[log in to unmask]> on behalf of Albert <[log in to unmask]> Reply-To: FSL - FMRIB's Software Library <[log in to unmask]> Date: Thursday, 29 September 2016 at 09:54 To: "[log in to unmask]" <[log in to unmask]> Subject: [FSL] Run Possum on GPU Dear experts, I am running simulation with Possum, but they take more time (1 night for one). I would like to know if is possibile to run Possum script on GPU, in order to speed-up my work. Thanks in advance Albert