[Rtk-users] CUDA Ramp filter

[Cyril Mory]

Hi Shiras,

Another user had the same error some years ago :
http://public.kitware.com/pipermail/rtk-users/2012-November/000028.html
It seemed to be a GPU memory size issue.

Can you tell what GPU you use, are what are the size and number of your 
projections ? Can you try with a single projection (you can use the 
"rtksubselect" application to create such a dataset out of yours) ?

Best regards,
Cyril

On 06/15/2016 10:50 AM, Shiras Abdurahman wrote:
> Dear Cyril,
>
> Thanks a lot. Now rtkramp.exe works with cuda option.
> I am trying to integrate rtk cuda ramp filter into my recon program. I 
> read the projections with ProjectionsReader and pass image pointer to 
> cuda ramp filter pipeline using
> cudaRampFilter->SetInput(projections);
>
> I am getting runtime error and it says
> Error during cuda ramp filtering ::
> D:/programming/cpp/ext_libs/rtk_1_2/src/code/rtkCudaFFTConvolutionImageFilter.cu
> :97:
> itk::ERROR: CUFFT ERROR #2
>
> Do I need to enable or disable any parameter while reading projections 
> to get rid of this error? I changed rtk_proj_reader_->Update 
> to rtk_proj_reader_->UpdateOutputInformation();
> But I am still getting the error.
> The error exists only with CudaFFTRampImageFilter 
>  and FFTRampImageFilter works fine.
>
> With regards,
> Shiras
>
>
>
>
>
> On Tue, Jun 14, 2016 at 3:38 PM, Cyril Mory <cyril.mory at uclouvain.be 
> <mailto:cyril.mory at uclouvain.be>> wrote:
>
>     Hi Shiras,
>
>     We found that bug recently with Sebastien Brousmiche and fixed it,
>     at least for the use case we were considering. Can you try with
>     the git master version of RTK ?
>     Alternatively, you can replace
>
>     reader->Update()
>
>     with
>
>     reader->UpdateOutputInformation()
>
>     in line 61 of rtkramp.cxx and see if it fixes the problem.
>
>     Regards,
>     Cyril
>
>
>     On 06/14/2016 03:12 PM, Shiras Abdurahman wrote:
>>     Dear all,
>>
>>     When I use rtkramp with cuda option, I am getting following error
>>
>>     ExceptionObject caught with streamer->Update() in file
>>     D:\programming\cpp\ext_li
>>     bs\rtk_1_2\src\applications\rtkramp\rtkramp.cxx line 93
>>
>>     itk::ExceptionObject (000000ADA7DAF220)
>>     Location: "unknown"
>>     File:
>>     d:\programming\cpp\ext_libs\rtk_1_2\src\code\rtkCudaFFTConvolutionImageFil
>>     ter.txx
>>     Line: 50
>>     Description: itk::ERROR:
>>     CudaFFTRampImageFilter(000000ADAA53B490): CudaFFTConvol
>>     utionImageFilter assumes that input requested and buffered
>>     regions are equal.
>>
>>     However, cpu version of ramp filter works fine.
>>
>>     Thanks in advance.
>>
>>     With regards,
>>     Shiras
>>
>>
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>

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