$ CYCLES_OPENCL_DEBUG=1 blender --debug-cycles --debug
Switching to fully guarded memory allocator.
Blender 2.77 (sub 0)
Build: 2016-04-08 19:09:13 Linux RelWithDebInfo
argv[0] = /usr/lib/blender/blender
argv[1] = -P
argv[2] = /usr/lib/blender/reset_excepthook.py
argv[3] = --debug-cycles
argv[4] = --debug
connect failed: No such file or directory

Note: No (valid) '/home/inferno/.config/blender/2.77/config/startup.blend' found, fall back to built-in default.

read file 
  Version 272 sub 2 date unknown hash unknown

ordered
 OBCube
 OBLamp
 OBCamera
read file /home/inferno/.config/blender/2.77/config/userpref.blend
  Version 277 sub 0 date 2016-04-05 18:12 hash abf6f08
Read new prefs: /home/inferno/.config/blender/2.77/config/userpref.blend
I0714 19:55:01.880733 27761 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 19:55:01] Attempting to import pylux module from "/media/Compressed/data/scenes/classroom/../../../../../opt/lux-v1.6-x86_64-sse2-OpenCL/"
[Lux 2016-Jul-14 19:55:02] Pylux module imported successfully
[Lux 2016-Jul-14 19:55:02] Using pylux version 1.6.0  Build 0
[Lux 2016-Jul-14 19:55:02] Attempting to import pyluxcore module from "/media/Compressed/data/scenes/classroom/../../../../../opt/lux-v1.6-x86_64-sse2-OpenCL/"
[Lux 2016-Jul-14 19:55:02] Pyluxcore module imported successfully
[Lux 2016-Jul-14 19:55:02] Using pyluxcore version 1.6
[Lux 2016-Jul-14 19:55:02] Installed scene post-update handler
[Mitsuba 2016-Jul-14 19:55:02] Installed scene post-update handler
ED_undo_push: Blender Render
ED_undo_push: LuxRender
I0714 19:55:10.173600 27761 device_cuda.cpp:1206] CUEW initialization failed: Error opening the library
I0714 19:55:10.173794 27761 device_opencl.cpp:3259] CLEW initialization succeeded.
I0714 19:55:11.051302 27761 device_opencl.cpp:278] Enumerating devices for platform AMD Accelerated Parallel Processing.
I0714 19:55:11.051357 27761 device_opencl.cpp:338] Adding new device Pitcairn.
I0714 19:55:11.051370 27761 device_opencl.cpp:346] Ignoring device AMD A8-5500 APU with Radeon(tm) HD Graphics, not officially supported yet.
ED_undo_push: CPU
Evaluate all animation - 1.000000
	No Actions, so no animation needs to be evaluated...
I0714 19:55:16.727310 27781 device_opencl.cpp:3238] Using split kernel.
I0714 19:55:16.727406 27781 device_opencl.cpp:731] Creating new Cycles device for OpenCL platform AMD Accelerated Parallel Processing, device Pitcairn.
Device init success
I0714 19:55:16.738873 27788 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 19:55:16.738989 27788 device_opencl.cpp:958] No cached OpenCL kernel.
I0714 19:55:16.744038 27788 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__
Kernel compilation finished in 5.07s.
I0714 19:55:22.006256 27788 device_opencl.cpp:3218] Skip storing kernel in cache, not supported by split kernel.
I0714 19:55:22.037776 27788 svm.cpp:49] Total 6 shaders.
I0714 19:55:22.037914 27788 svm.cpp:84] Compilation summary:
Shader name: default_surface
Number of SVM nodes: 8
Peak stack usage:    4
Time (in seconds):
  Finalize:          0.000068
  Bump finalize:     0.000000
Finalize:            0.000068
  Surface:           0.000012
  Bump:              0.000000
  Volume:            0.000001
  Displacement:      0.000001
Generate:            0.000014
Total:               0.000084
I0714 19:55:22.037977 27788 svm.cpp:84] Compilation summary:
Shader name: default_light
Number of SVM nodes: 3
Peak stack usage:    0
Time (in seconds):
  Finalize:          0.000014
  Bump finalize:     0.000000
Finalize:            0.000014
  Surface:           0.000001
  Bump:              0.000000
  Volume:            0.000000
  Displacement:      0.000001
Generate:            0.000002
Total:               0.000017
I0714 19:55:22.038038 27788 svm.cpp:84] Compilation summary:
Shader name: default_background
Number of SVM nodes: 5
Peak stack usage:    0
Time (in seconds):
  Finalize:          0.000005
  Bump finalize:     0.000000
Finalize:            0.000005
  Surface:           0.000004
  Bump:              0.000000
  Volume:            0.000000
  Displacement:      0.000001
Generate:            0.000005
Total:               0.000011
I0714 19:55:22.038090 27788 svm.cpp:84] Compilation summary:
Shader name: default_empty
Number of SVM nodes: 3
Peak stack usage:    0
Time (in seconds):
  Finalize:          0.000003
  Bump finalize:     0.000000
Finalize:            0.000003
  Surface:           0.000001
  Bump:              0.000000
  Volume:            0.000000
  Displacement:      0.000000
Generate:            0.000001
Total:               0.000005
I0714 19:55:22.038153 27788 svm.cpp:84] Compilation summary:
Shader name: 
Number of SVM nodes: 5
Peak stack usage:    0
Time (in seconds):
  Finalize:          0.000006
  Bump finalize:     0.000000
Finalize:            0.000006
  Surface:           0.000003
  Bump:              0.000000
  Volume:            0.000000
  Displacement:      0.000001
Generate:            0.000004
Total:               0.000010
I0714 19:55:22.038216 27788 svm.cpp:84] Compilation summary:
Shader name: Material
Number of SVM nodes: 8
Peak stack usage:    4
Time (in seconds):
  Finalize:          0.000007
  Bump finalize:     0.000000
Finalize:            0.000007
  Surface:           0.000006
  Bump:              0.000000
  Volume:            0.000000
  Displacement:      0.000001
Generate:            0.000007
Total:               0.000015
I0714 19:55:22.038259 27788 device_opencl.cpp:1190] Texture allocate: __svm_nodes, 704 bytes.
I0714 19:55:22.043496 27788 device_opencl.cpp:1190] Texture allocate: __shader_flag, 96 bytes.
I0714 19:55:22.149956 27788 object.cpp:383] Total 1 objects.
I0714 19:55:22.150010 27788 device_opencl.cpp:1190] Texture allocate: __objects, 176 bytes.
I0714 19:55:22.150225 27788 mesh.cpp:1205] Total 1 meshes.
I0714 19:55:22.150269 27788 device_opencl.cpp:1190] Texture allocate: __tri_shader, 48 bytes.
I0714 19:55:22.150342 27788 device_opencl.cpp:1190] Texture allocate: __tri_vnormal, 128 bytes.
I0714 19:55:22.150413 27788 device_opencl.cpp:1190] Texture allocate: __tri_verts, 128 bytes.
I0714 19:55:22.150483 27788 device_opencl.cpp:1190] Texture allocate: __tri_vindex, 192 bytes.
I0714 19:55:22.150570 27788 device_opencl.cpp:1190] Texture allocate: __attributes_map, 32 bytes.
I0714 19:55:22.150687 27788 mesh.cpp:1078] Using regular BVH optimization structure
I0714 19:55:22.150806 27788 bvh_build.cpp:287] BVH build statistics:
  Build time: 2.09808e-05
  Total number of nodes: 7
  Number of inner nodes: 3
  Number of leaf nodes: 4
I0714 19:55:22.150857 27788 device_opencl.cpp:1190] Texture allocate: __bvh_nodes, 192 bytes.
I0714 19:55:22.150923 27788 device_opencl.cpp:1190] Texture allocate: __bvh_leaf_nodes, 64 bytes.
I0714 19:55:22.150984 27788 device_opencl.cpp:1190] Texture allocate: __object_node, 4 bytes.
I0714 19:55:22.151046 27788 device_opencl.cpp:1190] Texture allocate: __tri_woop, 576 bytes.
I0714 19:55:22.151106 27788 device_opencl.cpp:1190] Texture allocate: __prim_type, 48 bytes.
I0714 19:55:22.151165 27788 device_opencl.cpp:1190] Texture allocate: __prim_visibility, 48 bytes.
I0714 19:55:22.151226 27788 device_opencl.cpp:1190] Texture allocate: __prim_index, 48 bytes.
I0714 19:55:22.151286 27788 device_opencl.cpp:1190] Texture allocate: __prim_object, 48 bytes.
I0714 19:55:22.151355 27788 device_opencl.cpp:1190] Texture allocate: __object_flag, 4 bytes.
I0714 19:55:22.151448 27788 tables.cpp:40] Total 1 lookup tables.
I0714 19:55:22.151456 27788 device_opencl.cpp:1190] Texture allocate: __lookup_table, 262144 bytes.
I0714 19:55:22.151753 27788 light.cpp:774] Total 2 lights.
I0714 19:55:22.151762 27788 light.cpp:187] Background MIS has been disabled.
I0714 19:55:22.151772 27788 light.cpp:764] Number of lights sent to the device: 1
I0714 19:55:22.151778 27788 light.cpp:766] Number of lights without contribution: 1
I0714 19:55:22.151785 27788 device_opencl.cpp:1190] Texture allocate: __light_data, 160 bytes.
I0714 19:55:22.151909 27788 device_opencl.cpp:1190] Texture allocate: __light_distribution, 32 bytes.
I0714 19:55:22.152022 27788 particles.cpp:96] Total 0 particle systems.
I0714 19:55:22.152048 27788 device_opencl.cpp:1190] Texture allocate: __particles, 80 bytes.
I0714 19:55:22.152818 27788 device_opencl.cpp:1190] Texture allocate: __sobol_directions, 36352 bytes.
I0714 19:55:22.152961 27788 tables.cpp:40] Total 2 lookup tables.
I0714 19:55:22.152998 27788 device_opencl.cpp:1190] Texture allocate: __lookup_table, 266240 bytes.
I0714 19:55:22.153369 27788 scene.cpp:245] System memory statistics after full device sync:
  Usage: 571980
  Peak: 3189282
I0714 19:55:39.839248 27781 blender_session.cpp:539] Total render time: 23.1119
I0714 19:55:39.839285 27781 blender_session.cpp:540] Render time (without synchronization): 17.8012