Hi,
if the issue is with const vs. non-const, cast the const-pointer you
receive from Matlab to a non-const pointer.
Best regards,
Karli
On 04/09/2016 07:54 PM, 侠贵族 wrote:
> Thanks for reply! I wrote the wrap code similar as example in viennacl
> source,
> viennacl::vector<double> vec1("device pointer from matlab mxgpuarray
> method", viennacl::cudamemory, size). It should fit the syntax, I think so.
>
> 2016年4月10日 01:37，"Omar Valerio" <[email protected]
> <mailto:[email protected]>>写道：
>
> Hello,
>
> From the compiler error message. It seems the class constructor
> requires two parameters and you are using it with only one.
>
> Am Samstag, 9. April 2016 schrieb 侠贵族 :
>
> Hi karl
> For these days, I tried to combine Mathematica and viennaCL to
> get a develop platform. However, Mathematica use its exclusive
> CudaMemory mechanism provided a integer ID from which I can't
> get raw device pointers not right now, anyway. I have to change
> to Matlab and it offers a ready mxGPUArray methods to extract
> raw device pointer and wrap it again to Matlab's gpuArray
> object. But when I test a easy example like c = a+b (a,b,c are
> device vectors), I face errors:
>
> D:/DevelopeTools/Workspace/Matlab_ViennaCL/test.cu
> <http://test.cu>(84): error: no instance of constructor
> "viennacl::vector<NumericT, AlignmentV>::vector [with
> NumericT=double,
> AlignmentV=1U]" matches the argument list
> argument types are: (const double *,
> viennacl::memory_types, int)
> ....
>
> My point is, in matlabthe mexfunction
> void mexFunction(int nlhs, mxArray *plhs[],
> int nrhs, mxArray const *prhs[]){
> ...}, the *prhs[] must const to avoid unpredictable errors. but
> in viennaCL
> vector.hpp/matrix.hpp/compressed_matrix..., there are
> not constructor to include const double * type. Am I right? How
> to add a match statement in these .hpp files to solve the problem?
>
> I attached my test files.
>
> Best wishes
> Jingbo
>
>
>
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