Hi, pa.cuda.CudaBuffer provides address and size of a device memory, so one can construct numba.cuda MemoryPointer from a CudaBuffer instance and hence there exists a way to pass CudaBuffer instances to numba.cuda jitted functions.
The other way, having a device pointer and size (say, from numba.cuda objects) and then construct a CudaBuffer from it, is not currently possible within pyarrow. Since C++ CudaBuffer has the corresponding constructor already that takes the address and size (and context) to produce CudaBuffer instance, would it make sense to support this also in Python level? [I can give the implementation a try if so] Is it possible to construct a pyarrow.Buffer instance from a host pointer value and size? Best regards, Pearu
