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]
