[Mrtrix-discussion] streamtrack hanging

[Luis Concha]

Hello.

I am experiencing problems with streamtrack, as it hangs when tracking from
certain seeds. Oddly, it happens randomly, sometimes finishing the tracking
and sometimes hanging in an unexpected manner. My seeds are always placed on
high anisotropy voxels and I have tried both image-based seeds or
coordinate-based seeds. Both approaches have always included a single voxel
for seeding.

Please see below the [DEBUG] output. It hangs after launching the threads,
with all of them working at 100% CPU, but it does not finish. Any ideas?

Thanks very much.

Luis Concha

$  streamtrack -info -debug -number 1000 -maxnum 10000 \
  -seed 0,4,-2,2 \
  SD_PROB \

/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii
\
 /media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/t_0,4,-2,2.tck

streamtrack [DEBUG]: reading key/value file "/home/lconcha/.mrtrix.conf"...
streamtrack [INFO]: opening image
"/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii"...
streamtrack [DEBUG]: preparing file
"/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii"
streamtrack [DEBUG]: file
"/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii"
mapped at 0x7f3cafd18000, size 60000352 (read-only)
streamtrack [DEBUG]: sanitising transformation matrix...
streamtrack [DEBUG]: unmapping file
"/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii"
streamtrack [DEBUG]: setting up image
"/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii"...
streamtrack [DEBUG]: sanitising transformation matrix...
streamtrack [DEBUG]: setting up data increments for
"/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii"...
streamtrack [DEBUG]: data increments initialised with start = 0, stride = [
1 100 10000 1000000 ]
streamtrack [DEBUG]: mapping image
"/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii"...
streamtrack [DEBUG]: file
"/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii"
mapped at 0x7f3cafd18000, size 60000352 (read-only)
streamtrack [DEBUG]: data mapper for image
"/media/IOMEGA1TB/denoise/data3/sintetico-homo/mrtrix/results//clean/out_CSD4.nii"
mapped with segment size = 15000000 (optimised)
streamtrack [INFO]: launching 8 threads


... hangs here.
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