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