Working around pyopencl array offset limitation

Working around pyopencl array offset limitation

Is there a way to work around the limitation in PyOpenCL whereby:
array.data
fails with
pyopencl.array.ArrayHasOffsetError: The operation you are attempting does
not yet support arrays that start at an offset from the beginning of their
buffer.
I tried:
a.base_data[a.offset: a.offset + a.nbytes]
This seems to work sometimes, but other times I get:
pyopencl.LogicError: clCreateSubBuffer failed: invalid value