Hello,
Cuda 5.5 is installed now and I 've tried an export. There is a
significant increase in performance only in exports.
But while working on lighttable and in darkroom, there is no increase in
performance at all. Unfortunately nothing snappier, no quicker previews
than without opencl.
Best Regards
Am 09.02.2014 11:11, schrieb Victor L:
Hello,
Here are detailled instructions on how to install CUDA : Getting
started guide for Linux
<http://docs.nvidia.com/cuda/cuda-getting-started-guide-for-linux/index.html#runfile-installation>
The download page <https://developer.nvidia.com/cuda-downloads>
If you can compile the CUDA example deviceQuerry and run it then your
installation is ok.
I don't know if OpenCL/darktable make use of CUDA
2014-02-09 10:43 GMT+01:00 [email protected] <mailto:[email protected]>
<[email protected] <mailto:[email protected]>>:
Hello,
I'd like to do some benchmarks.
When I run with opencl enabled (checked "opencl" in the gui and
restart)
I get the nearly the same two values (e.g. for equalizer):
[dev_process_preview] pixel pipeline processing took 1,005 secs
(2,764 CPU)
It doesn't make any difference whether with or without opencl. The
stay
always the same.
Why are there two values shown?
Here is the output with opencl enabled:
$ darktable -d opencl -d perf
[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
[opencl_init]
[opencl_init] trying to load opencl library: '<system default>'
[opencl_init] opencl library 'libOpenCL' found on your system and
loaded
[opencl_init] found 1 platform
[opencl_init] found 1 device
[opencl_init] device 0 `GeForce GTX 460' has sm_20 support.
[opencl_init] device 0 `GeForce GTX 460' supports image sizes of
32768 x
32768
[opencl_init] device 0 `GeForce GTX 460' allows GPU memory allocations
of up to 255MB
[opencl_init] device 0: GeForce GTX 460
GLOBAL_MEM_SIZE: 1023MB
MAX_WORK_GROUP_SIZE: 1024
MAX_WORK_ITEM_DIMENSIONS: 3
MAX_WORK_ITEM_SIZES: [ 1024 1024 64 ]
DRIVER_VERSION: 319.76
DEVICE_VERSION: OpenCL 1.1 CUDA
[...]
It exits well:
[opencl_summary_statistics] device 'GeForce GTX 460': 37 out of 37
events were successful and 0 events lost
The following OpenCL packages are installed. Perf Logging seems fine.
The following packages are installed:
nvidia-opencl-common
nvidia-opencl-icd
ocl-icd-libopencl1
I don't have a particular Cuda package installed. There are available
packages:
libcuda1
libcuda1-i386
libcudart5.5
nvidia-cuda-dev
nvidia-cuda-doc
nvidia-cuda-gdb
nvidia-cuda-mps
nvidia-cuda-toolkit
python-pycuda
python-pycuda-dbg
python-pycuda-doc
python3-pycuda
python3-pycuda-dbg
I'd love to get more into.
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