$ ./poclbm.py
Traceback (most recent call last):
File "./poclbm.py", line 27, in
platforms = cl.get_platforms()
pyopencl.LogicError: clGetPlatformIDs failed: invalid/unknown error code
When you have this problem, you should check /etc/OpenCL/vendors/amdocl32.icd - this file should exist and contain the string "libamdocl32.so"
(for a 64-bit system, replace 32 with 64).
Floe