Hi Steve,
Is there an upper limit to how much data mfast can handle?
I have coregistered dataset 192x512x512 with 3 modalities (T1, T2, FLAIR)
and mfast response is:
Channel 0: ch1
Channel 1: ch2
Channel 2: ch3
Imagesize : 192 x 512 x 512
Pixelsize : 1 x 0.5 x 0.5
initial segmentation by KMeans....
4 main iterations ...
out of memory
FSL is running on IRIX based cluster with 16GB RAM.
Thanks,
Mikolaj
****************************************
Mikolaj A. Pawlak, MD PhD
Neuroradiology Research Division
Department of Radiology
University of Pennsylvania
3600 Market Street Suite 370
Philadelphia, PA 19104
phone: 215-662-3688
mail: [log in to unmask]
On 10/19/06, Steve Smith <[log in to unmask]> wrote:
>
> Hi, the first thing to check is that the 2 input images are both
> brain-extracted, both of the same image dimensions and well-aligned
> to each other.
> If this is all correct then the most likely issue is that you are
> running out of RAM/swap/process-size. You could try cutting out un-
> necessary slices (if any) in x, y or z, or moving to a 64-bit machine?
> Hope this helps - Cheers, Steve.
>
>
> On 18 Oct 2006, at 18:50, Rob Roach wrote:
>
> > FSL Team:
> >
> > I am using mfast on two good quality images, a T1 and T2. It
> > crashes form
> > the gui and form the cmd line. Running in cygwin. Any suggestions?
> >
> > Here is screen capture from a crash:
> >
> > $ mfast -os 03A_T2r_BET2 03A_t1r_bet2
> >
> > MFAST - Multispectral FAST Version 3.53
> >
> > Channel 0: /tmp/fsl_PIrU2U_03A_T2r_BET2
> > Channel 1: /tmp/fsl_PIrU2U_03A_t1r_bet2
> > Imagesize : 256 x 256 x 154
> > Pixelsize : 0.9375 x 0.9375 x 0.9375
> >
> > initial segmentation by KMeans....
> > 4 main iterations ...
> > /usr/local/fsl/bin/mfast: line 48: 660 Segmentation fault (core
> > dumped) ${fastcom}_exe $args
> >
> > Any suggestions for trouble shooting?
> >
> > Thanks,
> >
> > Rob
>
>
> ------------------------------------------------------------------------
> ---
> Stephen M. Smith, Professor of Biomedical Engineering
> Associate Director, Oxford University FMRIB Centre
>
> FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
> +44 (0) 1865 222726 (fax 222717)
> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve<http://www.fmrib.ox.ac.uk/%7Esteve>
> ------------------------------------------------------------------------
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>
