$ CYCLES_OPENCL_DEBUG=1 blender --debug-cycles
connect failed: No such file or directory
Read new prefs: /home/inferno/.config/blender/2.77/config/userpref.blend
I0714 19:52:10.228678 27670 blender_python.cpp:173] Debug flags initialized to:
CPU flags:
  AVX2   : True
  AVX    : True
  SSE4.1 : True
  SSE3   : True
  SSE2   : True
OpenCL flags:
  Device type : ALL
  Kernel type : DEFAULT
  Debug       : True
[Lux 2016-Jul-14 19:52:10] Attempting to import pylux module from "/media/Compressed/data/scenes/classroom/../../../../../opt/lux-v1.6-x86_64-sse2-OpenCL/"
[Lux 2016-Jul-14 19:52:10] Pylux module imported successfully
[Lux 2016-Jul-14 19:52:10] Using pylux version 1.6.0  Build 0
[Lux 2016-Jul-14 19:52:10] Attempting to import pyluxcore module from "/media/Compressed/data/scenes/classroom/../../../../../opt/lux-v1.6-x86_64-sse2-OpenCL/"
[Lux 2016-Jul-14 19:52:10] Pyluxcore module imported successfully
[Lux 2016-Jul-14 19:52:10] Using pyluxcore version 1.6
[Lux 2016-Jul-14 19:52:10] Installed scene post-update handler
[Mitsuba 2016-Jul-14 19:52:10] Installed scene post-update handler
I0714 19:52:23.511816 27670 device_cuda.cpp:1206] CUEW initialization failed: Error opening the library
I0714 19:52:23.512045 27670 device_opencl.cpp:3259] CLEW initialization succeeded.
I0714 19:52:24.153345 27670 device_opencl.cpp:278] Enumerating devices for platform AMD Accelerated Parallel Processing.
I0714 19:52:24.153391 27670 device_opencl.cpp:338] Adding new device Pitcairn.
I0714 19:52:24.153406 27670 device_opencl.cpp:346] Ignoring device AMD A8-5500 APU with Radeon(tm) HD Graphics, not officially supported yet.
I0714 19:52:27.620986 27689 device_opencl.cpp:3238] Using split kernel.
I0714 19:52:27.621067 27689 device_opencl.cpp:731] Creating new Cycles device for OpenCL platform AMD Accelerated Parallel Processing, device Pitcairn.
Device init success
I0714 19:52:27.632159 27696 session.cpp:655] Requested features:
Experimental features: Off
Max closure count: 1
Max nodes group: 0
Nodes features: 0
Use hair: False
Use object motion: False
Use camera motion: False
Use Baking: False
I0714 19:52:27.632237 27696 device_opencl.cpp:958] No cached OpenCL kernel.
OpenCL build failed: errors in console
I0714 19:52:27.639309 27696 device_opencl.cpp:1003] Kernel file /home/inferno/.config/blender/2.77/cache/cycles_kernel_90F8C1CB109D11E86DC068F1D1CCE8D8_311C6CB52A88568C18C3DA3897396C20.clbin either doesn't exist or failed to be loaded by driver.
Compiling OpenCL kernel ...
Build flags: -D__NODES_MAX_GROUP__=0 -D__NODES_FEATURES__=0 -D__MAX_CLOSURE__=1 -D__NO_HAIR__ -D__NO_OBJECT_MOTION__ -D__NO_CAMERA_MOTION__ -D__NO_BAKING__ -D__NO_SUBSURFACE__ -D__NO_BRANCHED_PATH__
OpenCL build failed: errors in console
I0714 19:52:27.825409 27689 blender_session.cpp:539] Total render time: 0.204497
I0714 19:52:27.825484 27689 blender_session.cpp:540] Render time (without synchronization): 1.4685e+09