/usr/lib/x86_64-linux-gnu/libhmsbeagle-opencl.so.21 is in libhmsbeagle1v5 2.1.2+20171110-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libhmsbeagle-opencl.so.21.0.0
/usr/lib/x86_64-linux-gnu/libhmsbeagle-opencl.so.21.0.0