[petsc-dev] Not possible to do a VecPlaceArray for veccusp

[Karl Rupp]

Hi,

> I like the idea of having separate VECCUDA and VECVIENNACL, because it is possible to implement VECCUDA without dependence on a C++ compiler (only the CUDA compiler).

I don't understand this part. NVCC also requires a C++ host compiler and 
is fairly picky about the supported compilers.


> If you want, we can prepare a rough initial implementation of VECCUDA in the next days, and we can later discuss what to keep/discard.

Any contributions are welcome :-)


> Karl: regarding the time constraints, our idea is to present something at a conference this summer, and deadlines are approaching.

Ok, this is on fairly short notice considering the changes required. I 
recommend to start with copying the CUSP sources and migrate it over to 
VECCUDA by replacing any use of cusp::array1d to a raw CUDA handle. 
Operations from CUSP should be replaced by CUBLAS calls.

Best regards,
Karli



>>>>
>>>> If there is interest we can help in adding this stuff.
>>>
>>> What are your time constraints?
>>>
>>> Best regards,
>>> Karli
>>>
>>>
>>
>> --
>> Dominic Meiser
>> Tech-X Corporation - 5621 Arapahoe Avenue - Boulder, CO 80303
>