Hi,
since Ubuntu 16.04, the processing and exporting with OpenCL felt much
slower than before. I finally decided to benchmark exporting times with
-d opencl - perf options and found out that OpenCL took 183 s to export
a 36 Mpx file with the GPU instead of 35 s with the CPU. However, the
output returns no error.
The outputs (OpenCL ON and OFF) are stored here :
https://www.dropbox.com/sh/pk8dwdu3pwmc9w6/AADUJsTBlQiR4pE7advNFqEMa?dl=0
Here are the specs of the system :
* Ubuntu 16.04
* Intel Core i7-2670QM CPU @ 2.20GHz × 8
* RAM 15,6 Gio
* NVIDIA 635M - (2 Go RAM)
* Driver nvidia-361 (v 361.42)
OpenCL config :
[opencl_init] opencl related configuration options:
[opencl_init]
[opencl_init] opencl: 1
[opencl_init] opencl_library: ''
[opencl_init] opencl_memory_requirement: 768
[opencl_init] opencl_memory_headroom: 300
[opencl_init] opencl_device_priority: '*/!0,*/*/*'
[opencl_init] opencl_size_roundup: 16
[opencl_init] opencl_async_pixelpipe: 0
[opencl_init] opencl_synch_cache: 0
[opencl_init] opencl_number_event_handles: 25
[opencl_init] opencl_micro_nap: 1000
[opencl_init] opencl_use_pinned_memory: 0
[opencl_init] opencl_use_cpu_devices: 0
[opencl_init] opencl_avoid_atomics: 0
[opencl_init] opencl_omit_whitebalance: 0
Any clues ?
Thanks !
--
*Aurélien PIERRE*
aurelienpierre.com <http://aurelienpierre.com>
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