* Marc Cabuy <[email protected]> [11-20-20 12:18]: > Gian, > > > > Good to hear that. And yes I expect that that XEON processor will surely > help (*). > > > > GPU performance can be further boosted by optimization of the opencl settings > in file darktablerc. You can read about that in the darktable manual. > > > > But possibly adequate parameters for a nvidia gtx 1650 can be found in this > thread: > > https://discuss.pixls.us/t/darktable-opencl-performance-with-nvidia-gtx1650-super/19965/17 > as follows > > opencl_async_pixelpipe=true > > opencl_avoid_atomics=false > > opencl_mandatory_timeout=200 > > opencl_memory_headroom=1024 > > opencl_memory_requirement=2048 > > opencl_micro_nap=10 > > opencl_number_event_handles=1000 > > opencl_scheduling_profile=very fast GPU > > opencl_size_roundup=16 > > opencl_synch_cache=false > > opencl_use_cpu_devices=false > > opencl_use_pinned_memory=false > > > > I gained like 3 to 6 times better interactive response time for pictures with > about 25 to 30 modules activated, by tuning these parameters on my GPU close > to these values. > > > > Further I also have put opencl_synch_cache=true. If that doesn’t penalize > general response time too much, it gives the advantage of better response > when reviewing/finetuning module parameters further in a 2nd pass even with > “denoise profiled” activated. That’s typical for my workflow. > > > > Regards, > > Marc. > > > > (*) But I am not an expert, since I use dt only since 6 months on an > off-the-shelve overconfigured pseudo-gaming laptop from the MSI Creator > series that I bought after my dual core I7 Acer laptop died. > > > > > > Van: GianLuca Sarto [mailto:[email protected]] > Verzonden: vrijdag 20 november 2020 13:30 > Aan: [email protected] > Onderwerp: Re: [darktable-user] Tone equaliser and response time during > zooming/panning on 4K display (dt 3.2.1-Windows 10) > > > > Marc, > > > > thank you very much for your warning! > > > > As you see, the first step is done, and I can see a huge improvement in > browsing through the lighttable with the GTX 1650. > > > > I was wondering too if it is worth to go to 4K, I wouldn't like to go back to > square one, performance wise. > > > > Maybe 2560x1440 is the wise compromise, and I save a lot of money: I do not > really feel constraint at 1920x1200, I was suffering more for the slow paging. > > > > In the next few days I should receive a second hand Xeon E3, that might boost > further the overall performance. > > > > -Gian > > > > > > On 20/11/20 12:53, Marc Cabuy wrote: > > Gian-Luca, > > > > Just a little warning about purchasing a 4K display. You indeed will need a > good GPU. But still there is (or are) module(s) that are fully cpu-bound. > That’s the case with tone equaliser. Interactive response when zooming and > panning in the darkroom may suffer from poor response time on a 4K display > (3840x2160) when you have a tone equaliser module activated in the module > stack. That’s my experience with dt 3.2.1 for Windows on my 16mp pictures. > That issue is not existing that much on my WQHD display (2560x1440) or almost > not on a HD display (1920x1080). > > > > I repeat: it’s experience with dt 3.2.1 for Windows. I am not aware on how it > behaves on Linux. > > > > > > Marc > > > > > > Van: GianLuca Sarto <mailto:[email protected]> > Verzonden: zondag 15 november 2020 21:30 > Aan: [email protected] > <mailto:[email protected]> > Onderwerp: Re: [darktable-user] Ubuntu 20.04, OpenCL, DT3.2.1, Radeon HD5400 > > > > thanks, Šarūnas, > > > > I have two Darktable systems, based on Lenovo TS140, one with AMD, the > > other with Nvidia Quadro 400. > > Neither of the two manage OpenCL.. > > > > 0.039390 [opencl_init] found opencl runtime library 'libOpenCL' > > 0.039412 [opencl_init] opencl library 'libOpenCL' found on your system > > and loaded > > 0.042560 [opencl_init] found 1 platform > > 0.042582 [opencl_init] found 1 device > > 0.042727 [opencl_init] device 0 `Quadro 400' has sm_20 support. > > 0.042778 [opencl_init] discarding device 0 `Quadro 400' due to > > insufficient global memory (511MB). > > 0.042784 [opencl_init] no suitable devices found. > > 0.042788 [opencl_init] FINALLY: opencl is NOT AVAILABLE on this system. > > > > I would like to upgrade one of the two systems to a 4K display, so was > > already decided to purchase a new video card. > > > > Is there a tested solution that works out of the box, or a list of DT > > OpenCL compliant cards for Linux? > > > > > > > > On 15/11/20 15:34, Šarūnas wrote: > > > On 11/14/20 3:41 PM, GianLuca Sarto wrote: > > >> Hello All, > > >> > > >> DT 3.2.1 here, running on Ubuntu 20.04, Radeon HD5400. > > >> > > >> OpenCL should be working, however DT complains "could not get platforms" > > >> (see below). > > > Support for Radeon HD5xxx may have ended with fglrx (Ubuntu 16.04?). > > > > > > You may check what is currently supported, > > > by proprietary AMDGPU-PRO: > > > https://www.amd.com/en/support > > > > > > by open source ROCm: > > > https://github.com/RadeonOpenCompute/ROCm#Hardware-and-Software-Support > > > > > > > ____________________________________________________________________________ > > darktable user mailing list > > to unsubscribe send a mail to [email protected] > <mailto:[email protected]> > > > > > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [email protected] > <mailto:[email protected]> > > > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [email protected] > <mailto:[email protected]> > > > ____________________________________________________________________________ > darktable user mailing list > to unsubscribe send a mail to [email protected] >
your parameters may be off for opencl_synch_cache, I have: opencl_synch_cache=active module -- (paka)Patrick Shanahan Plainfield, Indiana, USA @ptilopteri http://en.opensuse.org openSUSE Community Member facebook/ptilopteri Photos: http://wahoo.no-ip.org/piwigo paka @ IRCnet freenode ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
