[petsc-dev] Backend independent VecGetArray for GPUs

[Karl Rupp]

>
>    But you won’t want to have to create the CUSP or ViennaCL objects on the fly each time from the CUDA/OpenCL “raw pointers”?

why not? I can just 'wrap' an existing memory buffer for use with the 
respective operations provided with the respective library. Note that 
the cost of setting up such wrappers is negligible compared to the cost 
of launching a CUDA or OpenCL kernel.

Best regards,
Karli