Am Sun, 22 Dec 2019 20:25:17 +0100
schrieb Ulrich Pegelow <[email protected]>:
> Am 22.12.19 um 19:32 schrieb Jochen Keil:
> > However, both denoise module, which used to run perfectly on the
> > GPU, now fall back to CPU and add around 14s each!
> >
> > According to the log there's a tiling issue, but I don't understand
> > why. It's still the same 6GB GPU that used to work with 2.6.x.
> You might need to adjust parameter opencl_memory_headroom in
> darktablerc.
Thanks to remember me to do this. Could you please tell me the exact
name of the variable(s) to change?
My GeForce GTX 1660 has 5941MiB, I use XFCE and DT uses 73MiB at the
moment after booting the pc and starting dt. There are no other
programs which use opencl, so I can give dt a lot / the maximum. What
about 5000 for dt?
> In your case it's set at its default 300MB. The
> parameter tells darktable how much of the total VRAM it should assume
> to be reserved by other processes. darktable then takes all the rest.
> Now, if this parameter it set too low darktable will fail in GPU
> memory allocations.
>
> You should have on your system the nvidia-smi tool. It will tell you
> how much of the memory is currently used. This would be a first
> starting point for opencl_memory_headroom.
$ nvidia-smi
Sun Dec 22 23:04:06 2019
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 435.21 Driver Version: 435.21 CUDA Version:
10.1 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile
Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage |
GPU-Util Compute M. |
|===============================+======================+======================|
| 0 GeForce GTX 1660 Off | 00000000:2F:00.0 On |
N/A | | 0% 39C P0 23W / 130W | 676MiB / 5941MiB |
1% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU
Memory | | GPU PID Type Process name
Usage |
|=============================================================================|
| 0 2482 G /usr/lib/xorg/Xorg
586MiB | | 0 3298 G xfwm4
4MiB | | 0 4933 C /usr/bin/darktable
73MiB |
+-----------------------------------------------------------------------------+
> I recently have learnt that on a typical KDE system one of the
> components (plasmashell, krunner, ...) is notorious for leaking GPU
> memory. The longer the system runs the less VRAM is free. You should
> be able to see this if you follow up on nvidia-smi for a longer time.
>
> It is said that calling from time to time this script would free GPU
> memory again:
>
> #!/bin/bash
>
> kquitapp5 plasmashell
>
> kstart5 plasmashell &
Al
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