Are you running a 64 bit version of matlab. The 32 bit version will
run fine on 64bit machines but will have the same memory issues as if
running 32 bit architecture.
On Fri, Nov 7, 2008 at 11:04 AM, Chris Watson
<[log in to unmask]> wrote:
> I recompiled the mex files, and still got the same problem. I'm not sure if
> there's a memory leak, because both 'top' and 'free' said that only 50% of
> the system's memory was being used.
>
> I've attached a screenshot of one of the FA maps. I don't have a clue as to
> why the coronal and sag views are squished like that... Perhaps the header
> file is incorrect? I originally created the header files assuming the data
> would be 64x64; I then just changed the x and y values to 256. I make the
> headers in MRIcro. I ran segmentation on one of the older FA images, that
> was 64x64, and it worked fine.
>
> Thanks,
> Chris
>
> John Ashburner wrote:
>>
>> It is possible that the various *.mexa64 files need to be recompiled for
>> your platform. I don't have access to one of those nice new 64 bit
>> computers so I can't be of much help, but if a 64 bit machine with 8Gbytes
>> of RAM is having memory problems, then some form of memory leak seems
>> plausible.
>>
>> Another thing to check is that voxel sizes, dimensions etc are all correct
>> in your images. If your images appear to have a field of view better
>> measured in light years than mm, then this would lead to memory problems.
>>
>> Best regards,
>> -John
>>
>> On Friday 07 November 2008 02:24, Watson, Christopher wrote:
>>
>>>
>>> I tried running segmentation on a single image, and got:
>>>
>>> Error running job: Error using ==> horzcat
>>> Out of memory. Type HELP MEMORY for your options.
>>> In file "/occipital/matlab/spm5/spm_preproc.m" (v946), function
>>> "spm_preproc" at line 475. In file
>>> "/occipital/matlab/spm5/spm_config_preproc.m" (v1032), function "execute"
>>> at line 472.
>>>
>>> My machine has 8 Gb of RAM. This has never been an issue in the past...
>>> I'm
>>> running RHEL4, x86_64 arch.
>>>
>>>
>>> -----Original Message-----
>>> From: John Ashburner [mailto:[log in to unmask]]
>>> Sent: Thu 11/6/2008 3:44 PM
>>> To: Watson, Christopher; [log in to unmask]
>>> Subject: Re: [SPM] Seg Violation; mex file spm_krutil
>>>
>>> Which SPM version, and which updates were installed?
>>>
>>> Best regards,
>>> -John
>>>
>>> On Thursday 06 November 2008 18:28, Chris Watson wrote:
>>>
>>>>
>>>> I've been trying to run segmentation on a bunch of images. However, at
>>>> some point during the first subject, a segmentation violation occurs.
>>>> I've recreated the same exact problem several times now. I've attached
>>>> the message that pops up in the window when it occurs. It has to do with
>>>> spm_krutil.mexa64. Any suggestions for fixing this?
>>>>
>>>> Thanks,
>>>> Chris
>>>>
>>
>>
>>
>
>
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