Hello,
In case it is helpful, I thought I'd mention here that I am experiencing the same behavior with melodic/migp --- floating point exception just after the "Starting ICA estimation using concat" message.
I'm using Ubuntu 12.04 and fsl 5.0.8 compiled from source.
If someone has found the cause or a workaround, I'd be interested in hearing!
All the best,
Ryan
On Jun 9, 2015, at 8:57 PM, Stephen Smith <[log in to unmask]> wrote:
> Hi - you might need to send the data to Matthew to debug.....
> ....did you try running with a small number of subjects?
>
> Cheers
>
>
>
>
>> On 9 Jun 2015, at 08:51, Nolan Nichols <[log in to unmask]> wrote:
>>
>> Hi Steve,
>>
>> Thanks for your response. From the logs, it looks like melodic finishes reading all the files and then bails once it reaches "Starting ICA estimation using concat." So it is unclear how to pinpoint exactly which case is the troublemaker (abbreviated log file below).
>>
>> Not sure if this helps, but I tried running this same command over each case by using the same scan twice as input (i.e., melodic -i case001,case001 ...). Melodic completed for each case without error - I was hoping that would identify any corrupt dataset...
>>
>> Is there any way to save the intermediate PCA and verify if it is indeed corrupted? Other thoughts?
>>
>> Thanks for your help!
>>
>> Cheers,
>>
>> Nolan
>>
>> --
>> ... reading all the other files ...
>> ...
>> Reading data file /path/to/preprocessed/data ... done
>> Removing mean image ... done
>> Normalising by voxel-wise variance ... done
>> Reducing data matrix to a 537 dimensional subspace
>>
>> Excluding voxels with constant value ... done
>> Normalising by voxel-wise variance ... done
>>
>> Data size : 537 x 183550
>>
>> Starting PCA ... done
>> Start whitening using 30 dimensions ...
>> retaining 52.6792 percent of the variability
>> ... done
>>
>> Starting ICA estimation using concat
>>
>> /var/lib/torque/mom_priv/jobs/501588.cluster0.cluster.SC: line 19: 18255 Floating point exception(core dumped) melodic -i ${SUBJECTS} -m ${MASK} --bgimage=${BGIMAGE} -o ${OUTDIR} --migp --sep_vn --no_mm --nobet --tr=2.200000 -d 30 -v
>> --
>
>
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