[Eeglablist] bem_matrix.exe failing

Paul Czienskowski paul_c at gmx.de
Sun Jan 31 22:50:59 PST 2010

Hi Zeynep,

thanks for your fast and helpful answer. It's good to know why it fails 
and I will try to get it running on some machine with more resources 
now. Fortunately where I am there's no real lack of resources, so this 
wont be any Problem.


Zeynep Akalin Acar schrieb:
> Hi Paul,
> NFT mesh generation module generates meshes with ~19000 nodes. This
> requires a memory of about 3 GB. Also, if you apply IPA, the required
> memory will be about 4.8GB. The version of bem_matrix.exe included in
> the NFT toolbox was compiled with cygwin, and was limited by the
> available physical memory. I am working on getting bem_matrix.exe
> compile with Visual Studio which should make it use the swap space as
> well. It will probably run very slowly on a 2GB machine if it uses
> swap, but it should still work.
> Best,
> Zeynep
> On Fri, Jan 29, 2010 at 2:38 AM, Paul Czienskowski <paul_c at gmx.de> wrote:
>> Hey all,
>> For I'm investigating age-related differences in EEG-Source localization for
>> my diploma thesis I'm trying to generate the BEM forward-model from T1 MRI
>> Data with NFT. Now I'm at the stage to actually create the forward model,
>> but bem_matrix.exe crashes with the Exception STATUS_ACCESS_VIOLATION
>> (Stackdump see below). I'm running Matlab on a Windows 7 Professional x64
>> Laptop (2GB of RAM, 2,3GHz Core2Duo). I was trying to run it on our
>> Citrix-Envireonment, but it crashed there too. Maybe anyone encountered the
>> problem too and was able to solve it.
>> Thanks in advance, Paul
>> Stacktrace:
>> Exception: STATUS_ACCESS_VIOLATION at eip=610DD894
>> eax=00000000 ebx=00040000 ecx=00010000 edx=00000000 esi=611B3F08
>> edi=00000000
>> ebp=0028C0B8 esp=0028C0AC
>> program=C:\Users\Paul\Programmieren\Matlab\NFT-1.0\bin\bem_matrix.exe, pid
>> 4040, thread main
>> cs=0023 ds=002B es=002B fs=0053 gs=002B ss=002B
>> Stack trace:
>> Frame     Function  Args
>> 0028C0B8  610DD894  (00000000, 611B3F08, 00040000, 5DF00000)
>> 00040100  610029C7  (00000032, 000008BC, 000008D0, 00000030)
>> 8648586 [main] bem_matrix 4040 _cygtls::handle_exceptions: Exception:
>> 8859954 [main] bem_matrix 4040 _cygtls::handle_exceptions: Error while
>> dumping state (probably corrupted stack)
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Paul Czienskowski
Björnsonstr. 25
12163 Berlin

Tel.: (+49)(0)30/221609359
Handy: (+49)(0)1788378772

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