We have support for commodity multi-CPUs through our TBB and OpenMP backend. Currently we only support NVIDIA GPU’s, but will be expanding into other GPU vendors over the next few years.
Yes that is supported between VTK-m filters, and soon will be part of VTK-m aware filters in VTK.
Yes this supported in VTK-m when the accelerator is CUDA. This is done using a double buffer technique due to technical limitations with CUDA.
It would be good to look at what your high priority filters are. I expect that writing them would be fairly easy in VTK-m. Writing new algorithms in VTK-m is done by writing templated C++ code so that shouldn’t be a major obstacle. VTK-m provides abstractions around data transfer and the differences between the different backends so the developer only has to learn a minimal amount of information such as the concept of disjoint memory spaces.