Hi Maryam, it looks like there is a corrupted file there. Did you run out of space on your disk? If not, have you tried to delete the analysis and rerun? You might also try adding -no-fwhm (I can't remember if 4.5 takes this option).
doug

Maryam Vaziri Pashkam wrote:

Hi,

I am encountering a memory allocation error with selxavg3-sess and I am not sure how to get around it:

Here is the lines that I am running
mkanalysis-sess -analysis FHPDM_noauto -TR 2 -paradigm allpara.par -designtype event-related -funcstem fmc -motioncor -runlistfile FHPDM_runlist.txt -inorm -nconditions 8 -timewindow 20 -TER 2 -polyfit 2 -mcextreg -noautostimdur -force

selxavg3-sess -s 110821_xu_FHPDM_02 -df sessdir -analysis FHPDM_noauto
It is a single subject data with 12 runs, event related design that each event last for about 4 seconds and the total experiment time is 328 seconds( at TR=2 is equal to 164 TRs)

My computer is a MAC with 4 gb of ram. and I am running freesurfer 4.5. I have ran similar analysis on the same number of runs but much longer events (12 sec) before and have not had a problem. This is the first time I am analyzing data for this particular experiment though.
Here is the error line that I get:

mri_fwhm(2138) malloc: *** mmap(size=16777216) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
MRIalloc(70, 70, 33): could not allocate 19600 bytes for 49364th slice

voxelvolume 35.3062 mm3
Loading mask /Users/maryam/mri-space/studies/FHPDM/unpackdata/110821_xu_FHPDM_02/bold/FHPDM_noauto/mask.nii
Search region is 60647 voxels = 2141216.616840 mm3
Polynomial detrending, order = 0
Detrending
Cannot allocate memory
[dhcp-0170571539-df-00:st

Can anyone help?
Thanks,
Maryam

--
Douglas N. Greve, Ph.D.
MGH-NMR Center
greve@nmr.mgh.harvard.edu
Phone Number: 617-724-2358 Fax: 617-726-7422

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