Closed isgursoy closed 5 years ago
What version of luxmark are you using? Have you tried to disable GPU watchdog to check whether it's real gpu hang or gpu workload is to big? To disable gpu watchdog you can run as root below command
echo N > /sys/module/i915/parameters/enable_hangcheck
Luxmark is v3.1. Everything is fine on identical hardware and Ubuntu 16.04 with that Luxmark. Sadly I can not check clean 18.04. Only 18.04 that I can run on this machine is mine. The issue is not Luxmark specific, OpenCV is also affected. Luxmark case is just easy to reproduce.
I tried disabling watchdog, gpu is really hanging.
What scene are you using in luxmark? What version of OpenCV are you using? Can you provide steps to reproduce gpu hang in OpenCV? Are you using Xorg/Wayland? What desktop environment/window manager?
Hi,
Can you compare BIOS settings on these 2 machines, especially power management settings and GPU configurations? Are there the same kernel parameters set in kernel command line (grub)? Do you have the same packages for power management installed on Ubuntu 16.04 and 18.04? Can you compare on both machines during luxmark test (before hang) as root in file /sys/kernel/debug/dri/0/i915_frequency_info information about GPU frequency (if Intel GPU is configured as 0 drm device)?
Lowest (RPN) frequency: 350MHz
Nominal (RP1) frequency: 350MHz
Max non-overclocked (RP0) frequency: 1100MHz
Max overclocked frequency: 1100MHz
Current freq: 1100 MHz
Actual freq: 1100 MHz
Idle freq: 350 MHz
Min freq: 350 MHz
Boost freq: 1100 MHz
Max freq: 1100 MHz
Have you tried to run clpeak?
As I can see there is also Nvidia card in this machine? Have you configured it also? Do you have nvidia or nouveau kernel modules installed/loaded? Have you enabled opencl for this card? What is the output from commands:
sudo lspci -v
ls -l /dev/dri/by-path
clinfo
Closing due to inaction, feel free to reopen.
I had not time to check yet. I will be back here with outputs soon. Thanks.
Machine is http://www.vorke.com/project/vorke-v6/
OS is:
Linux 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
I tried all releases, result is same.