[Mne_analysis] BEM Model not configuring correctly

Alexander Conrad Nied conrad at nmr.mgh.harvard.edu
Tue Jun 19 11:06:45 EDT 2012
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Hey Minimum Norm Estimators,

I ran a subject before using the spacing of 7, but I was told it would 
be a good counter-model to try a spacing of 5. However, when I run: the 
command to set up the BEM model, it gives me this error:

 > Solution ready.
 > Saving...Could not update directory!
 >
 > Saved the result to 
/autofs/space/huygens_001/users/dgow/PTC2/MRI/PTC2_12/bem/PTC2_12-20480-20480-20480-bem-sol.fif
 >
 > BEM geometry computations complete.
 >
 > The model 
/autofs/space/huygens_001/users/dgow/PTC2/MRI/PTC2_12/bem/PTC2_12-20480-20480-20480-bem-sol.fif 
is now ready for use
 > Complete.

I am not sure why it could not update the directory. My disk has more 
than 50 GB left, and there is a ...-sol.fif file but it takes 3.7GB of 
space, the spacing 7 file takes only 0.23 GB. The forward solution 
process cannot load the ...-sol.fif file. The BEM/MEGMRI portion of my 
commands look like this:

mne_setup_source_space --overwrite --spacing 5 --subject PTC2_12
mne_setup_mri --overwrite --subject PTC2_12
mne_watershed_bem --overwrite --subject PTC2_12
mne_setup_forward_model --subject PTC2_12 --surf --ico 5 --overwrite

Additionally, the mne_setup_forward_model command takes about 12 hours 
to compute. In the past (with fewer vertices) it has only taken 12 
minutes, so I am not sure what is the slowdown.

Do you know why the mne_setup_forward_model function did not work or why 
it takes so long? Can I provide any additional information?

- Conrad



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