Hi probtrackx2 experts, I run the following command: /usr/pubsw/packages/fsl/5.0.9/bin/probtrackx2 --network -x .../seeds_mask_100_v1.txt -l --onewaycondition --omatrix1 -c 0.2 -S 2000 --steplength=0.5 -P 5000 --fibthresh=0.01 --distthresh=0.0 --sampvox=0.0 --forcedir --opd -s .../dmri.bedpostX/merged -m .../nodif_brain_mask --dir=.../probtrackx2 The output below (after ~15 hours) shows that there's been at least 33 volumes seeds processed. So, 1) If seeds_mask_100_v1.txt has 100 volumes, it seems that it will take (15/33)*100 hours to finish the job? 2) If so, is there any way you could suggest to make this process run faster? Thanks in advance, Rodrigo <OUTPUT>: Log directory is: .../probtrackx2 Running in network mode load seeds Load bedpostx samples 1_1 1_2 1_3 2_1 2_2 2_3 nfibres : 2 nsamples : 50 Done loading samples. Volume seeds volume 0 volume 1 volume 2 volume 3 volume 4 volume 5 volume 6 volume 7 volume 8 volume 9 volume 10 volume 11 volume 12 volume 13 volume 14 volume 15 volume 16 volume 17 volume 18 volume 19 volume 20 volume 21 volume 22 volume 23 volume 24 volume 25 volume 26 volume 27 volume 28 volume 29 volume 30 volume 31 volume 32 volume 33