[Insight-users] A memory issue

[Dženan Zukić]

http://forums.techarena.in/tips-tweaks/1177754.htm

On Fri, Jan 20, 2012 at 13:51, Ali Mouizina <ali.mouizina at gmail.com> wrote:

> To Dzenan :
>
> How can I do this ?
>
> To Kevin :
>
> All my values are within 0 and 1 but I think I can quantisize those values
> between 0 and 255. I tried your suggestion on a smaller image (and hence  a
> smaller vector 512*512*22*125 <=> 671 MB with unsigned char) but it crashes
> when I instantiate 2 vectors (it works with 1). By the way I have a 8 GB of
> RAM and windows 7 64 bits. How can I fix this ?
>
> Thank you very much for your help !
>
> Regards,
>
> Ali
>
> Le 20/01/2012 13:09, Kevin Keraudren a écrit :
>
>  Also, changing PixelType and using a smaller type would save memory. Of
>> course, not all algorithms can live with unsigned char.
>>
>> unsigned char: 512*512*156*125/1024/1024/1024 ~ 4.8 GB
>> double:        512*512*156*125*8/1024/1024/**1024 ~ 38.1 GB
>>
>>
>> On 20/01/12 11:26, Dženan Zukić wrote:
>>
>>> Have you tried increasing virtual memory/swap file size? That should do
>>> it, I think. But it would be slower, of course.
>>>
>>> On Fri, Jan 20, 2012 at 11:31, Ali Mouizina<ali.mouizina at gmail.**com<ali.mouizina at gmail.com>
>>> <mailto:ali.mouizina at gmail.com**>>  wrote:
>>>
>>>     Hi all,
>>>
>>>     I'm currently trying to allocate a 4-D vector whose size is
>>>     512*512*156*125 to store the results of  some computations i do on a
>>>     3D image. As expected, I don't have enough memory, is there any
>>>     trick to get round this problem ?
>>>
>>>     The results I get at each iteration of the computation process is
>>>     stored into a slice of the 4D vector, so I thought I can process
>>>     each slice separately. Any suggestions on how to do that or any
>>>     other ideas ?
>>>
>>>     Regards,
>>>
>>>     Ali
>>>
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>
> --
> Ali Mouizina
> Diplômé en Traitement Numérique du Signal
> Elève-Ingénieur en Traitement d'images
> Mastère Spécialisé Telecom ParisTech : Signal, Images et Reconnaissance de
> formes
> Paris - FRANCE
>
> ------------------------------**------------------------------**
> ---------------------
>
> Ali Mouizina
> Graduated in Digital Signal Processing
> Currently studying Image Processing
> Advanced Masters at Telecom ParisTech : Signal, Images and Pattern
> Recognition
> Paris - FRANCE
>
> ------------------------------**------------------------------**
> ---------------------
>
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