Hi,
I'm running FSL 4 on a 32-bit WinXP machine w/ 4GB RAM and 5GB of paging
file (2.8GB user memory and 1.9GB used swap allocated to the virtual
machine). The fractional anisotropy maps are 128 x 128 x 28 with 1.72mm x
1.72mm x 4mm resolution. I'm getting the error message below when running
'tbss_3_postreg -S' on 60 subjects. Is this an out of memory error? About
how much RAM do you use to process your own datasets with 64-bit Linux
machines? Thank you very much for your time and attention.
cheers
Russell
[fsl@localhost toProcess]$ tbss_3_postreg -S
using pre-chosen target for registration
transforming all FA images into MNI152 space
M023-DTI_FA_FAi
M025-DTI_FA_FAi
M026-DTI_FA_FAi
.
.
.
M124-DTI_FA_FAi
M125-DTI_FA_FAi
M126-DTI_FA_FAi
merging all upsampled FA images into single 4D image
creating valid mask and mean FA
terminate called after throwing an instance of 'std::bad_alloc'
what(): St9bad_alloc
/usr/local/fsl/bin/tbss_3_postreg: line 177: 7390 Aborted
$FSLDIR/bin/fslmaths all_FA -max 0 -Tmin -bin mean_FA_mask -odt char
** ERROR (nifti_image_read): failed to find header file for 'mean_FA_mask'
** ERROR: nifti_image_open(mean_FA_mask): bad header info
Error: failed to open file mean_FA_mask
ERROR: Could not open image mean_FA_mask
Image Exception : #22 :: Failed to read volume mean_FA_mask
terminate called after throwing an instance of 'RBD_COMMON::BaseException'
/usr/local/fsl/bin/tbss_3_postreg: line 178: 7405 Aborted
$FSLDIR/bin/fslmaths all_FA -mas mean_FA_mask all_FA
terminate called after throwing an instance of 'std::bad_alloc'
what(): St9bad_alloc
/usr/local/fsl/bin/tbss_3_postreg: line 179: 7412 Aborted
$FSLDIR/bin/fslmaths all_FA -Tmean mean_FA
skeletonising mean FA
** ERROR (nifti_image_read): failed to find header file for 'mean_FA'
** ERROR: nifti_image_open(mean_FA): bad header info
Error: failed to open file mean_FA
ERROR: Could not open image mean_FA
Image Exception : #22 :: Failed to read volume mean_FA
terminate called after throwing an instance of 'RBD_COMMON::BaseException'
/usr/local/fsl/bin/tbss_3_postreg: line 190: 7415 Aborted
$FSLDIR/bin/tbss_skeleton -i mean_FA -o mean_FA_skeleton
now view mean_FA_skeleton to check whether the default threshold of 2000
needs changing, when running:
tbss_4_prestats [threshold]
[fsl@localhost toProcess]$
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