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For some reason, the GPU, which is a GTX 765M, is not working as expected under Linux.
It works alternating an error and a correct execution. So everytime i need to execute a CUDA application, i need to run two atempts. This is the same for games.
First Attempt -- fail
[cristobal@orion release]$ optirun -vv ./nbody
[ 473.394936] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[ 473.395094] [INFO]Configured driver: nvidia
[ 473.395182] [DEBUG]optirun version 3.2.1 starting...
[ 473.395187] [DEBUG]Active configuration:
[ 473.395190] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[ 473.395192] [DEBUG] X display: :8
[ 473.395195] [DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia:/usr/lib32/nvidia
[ 473.395207] [DEBUG] Socket path: /var/run/bumblebee.socket
[ 473.395209] [DEBUG] Accel/display bridge: auto
[ 473.395211] [DEBUG] VGL Compression: proxy
[ 473.395213] [DEBUG] VGLrun extra options:
[ 473.395216] [DEBUG] Primus LD Path: /usr/lib/primus:/usr/lib32/primus
[ 473.395230] [DEBUG]Using auto-detected bridge virtualgl
[ 481.623364] [INFO]Response: No - error: [XORG] (EE) Server terminated successfully (0). Closing log file.
[ 481.623387] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) Server terminated successfully (0). Closing log file.
[ 481.623391] [DEBUG]Socket closed.
[ 481.623415] [ERROR]Aborting because fallback start is disabled.
[ 481.623419] [DEBUG]Killing all remaining processes.
[cristobal@orion release]$ Second attempt -- works
[cristobal@orion release]$ optirun -vv ./nbody
[ 951.741742] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[ 951.742256] [INFO]Configured driver: nvidia
[ 951.742487] [DEBUG]optirun version 3.2.1 starting...
[ 951.742558] [DEBUG]Active configuration:
[ 951.742593] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[ 951.742637] [DEBUG] X display: :8
[ 951.742672] [DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia:/usr/lib32/nvidia
[ 951.742703] [DEBUG] Socket path: /var/run/bumblebee.socket
[ 951.742743] [DEBUG] Accel/display bridge: auto
[ 951.742774] [DEBUG] VGL Compression: proxy
[ 951.742804] [DEBUG] VGLrun extra options:
[ 951.742834] [DEBUG] Primus LD Path: /usr/lib/primus:/usr/lib32/primus
[ 951.742902] [DEBUG]Using auto-detected bridge virtualgl
[ 952.617527] [INFO]Response: Yes. X is active.
[ 952.617540] [INFO]Running application using virtualgl.
[ 952.617631] [DEBUG]Process vglrun started, PID 4279.
Run "nbody -benchmark [-numbodies=<numBodies>]" to measure perfomance.
-fullscreen (run n-body simulation in fullscreen mode)
-fp64 (use double precision floating point values for simulation)
-hostmem (stores simulation data in host memory)
-benchmark (run benchmark to measure performance)
-numbodies=<N> (number of bodies (>= 1) to run in simulation)
-device=<d> (where d=0,1,2.... for the CUDA device to use)
-numdevices=<i> (where i=(number of CUDA devices > 0) to use for simulation)
-compare (compares simulation results running once on the default GPU and once on the CPU)
-cpu (run n-body simulation on the CPU)
-tipsy=<file.bin> (load a tipsy model file for simulation)
> Windowed mode
> Simulation data stored in video memory
> Single precision floating point simulation
> 1 Devices used for simulation
> Compute 3.0 CUDA device: [GeForce GTX 765M]
[ 954.523442] [DEBUG]SIGCHILD received, but wait failed with No child processes
[ 954.523457] [DEBUG]Socket closed.
[ 954.523472] [DEBUG]Killing all remaining processes.
[cristobal@orion release]$ This alternating behavior keeps manifesting for all GPU based programs.
Any ideas?
Last edited by labotsirc (2013-10-03 13:19:04)
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I have the same problem with Kernel 3.12-4. It's impossible to start a Steam game with the dedicated graphics card. I have a nVidia Geforce GT750M in an Acer Aspire V5-573g.
first attempt:
optirun -vv glxgears
[ 1433.667049] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[ 1433.667214] [INFO]Configured driver: nvidia
[ 1433.667290] [DEBUG]optirun version 3.2.1 starting...
[ 1433.667300] [DEBUG]Active configuration:
[ 1433.667307] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[ 1433.667313] [DEBUG] X display: :8
[ 1433.667320] [DEBUG] LD_LIBRARY_PATH: /usr/lib32/primus:/usr/lib/nvidia:/usr/lib32/nvidia
[ 1433.667327] [DEBUG] Socket path: /var/run/bumblebee.socket
[ 1433.667334] [DEBUG] Accel/display bridge: auto
[ 1433.667341] [DEBUG] VGL Compression: proxy
[ 1433.667348] [DEBUG] VGLrun extra options:
[ 1433.667355] [DEBUG] Primus LD Path: /usr/lib/primus:/usr/lib32/primus
[ 1433.667373] [DEBUG]Using auto-detected bridge virtualgl
[ 1438.456231] [INFO]Response: No - error: [XORG] (EE) Server terminated successfully (0). Closing log file.
[ 1438.456244] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) Server terminated successfully (0). Closing log file.
[ 1438.456249] [DEBUG]Socket closed.
[ 1438.456259] [ERROR]Aborting because fallback start is disabled.
[ 1438.456263] [DEBUG]Killing all remaining processes.second attempt:
optirun -vv glxgears
[ 1484.436462] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[ 1484.436676] [INFO]Configured driver: nvidia
[ 1484.436797] [DEBUG]optirun version 3.2.1 starting...
[ 1484.436805] [DEBUG]Active configuration:
[ 1484.436808] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[ 1484.436811] [DEBUG] X display: :8
[ 1484.436813] [DEBUG] LD_LIBRARY_PATH: /usr/lib32/primus:/usr/lib/nvidia:/usr/lib32/nvidia
[ 1484.436816] [DEBUG] Socket path: /var/run/bumblebee.socket
[ 1484.436818] [DEBUG] Accel/display bridge: auto
[ 1484.436821] [DEBUG] VGL Compression: proxy
[ 1484.436823] [DEBUG] VGLrun extra options:
[ 1484.436826] [DEBUG] Primus LD Path: /usr/lib/primus:/usr/lib32/primus
[ 1484.436843] [DEBUG]Using auto-detected bridge virtualgl
[ 1485.129080] [INFO]Response: Yes. X is active.
[ 1485.129092] [INFO]Running application using virtualgl.
[ 1485.129173] [DEBUG]Process vglrun started, PID 3266.EDIT:
As suggested in https://bbs.archlinux.org/viewtopic.php … 3#p1309653, the following command fixed it for me:
sudo tee /sys/module/rcutree/parameters/rcu_idle_gp_delay <<<1Last edited by k0tb4tzen (2013-12-26 23:30:16)
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