[Paraview] Sharing GPUs Amongst Processes

[Biddiscombe, John A.]

Ricardo,

Thanks for the useful info. We may opt to start an X server at bootup and then allow anyone connected to use the display. We wanted to avoid the xserver because on our existing system, slurm scripts are used to allocate a node, the script starts an X server for the user to run GL apps. Unfortunately on a newer system with many more cores, this leads to wasted resources as one user allocates the GPU and one core, the other 5 are inaccessible ....

JB

> -----Original Message-----
> From: paraview-bounces at paraview.org [mailto:paraview-bounces at paraview.org]
> On Behalf Of Ricardo Reis
> Sent: 03 March 2010 23:24
> To: paraview at paraview.org
> Subject: Re: [Paraview] Sharing GPUs Amongst Processes
> 
> On Wed, 24 Feb 2010, Biddiscombe, John A. wrote:
> 
> > Question : Supposing you have no Xserver running but you wish to take
> advantage of hardware acceleration. Is it possible to create an offscreen
> buffer for each pvserver without the X server. We'd like to share one GPU
> between 4 cores, but without starting X.
> 
> maybe not what you want and maybe of some usefullness...
> 
> In the xorg.conf you can put
> 
> Section "Device"
>      Identifier     "Device0"
>      Driver         "nvidia"
>      BusID          "PCI:07:00:00"
>      Option         "UseDisplayDevice" "none"
>      VendorName     "NVIDIA Corporation"
> EndSection
> 
> I always had to start an xserver (if you have more than 1 GPU you can add
> device and screen sections has needed to xorg.conf). I've been using this to
> render using Tesla cards.
> 
> Off course this needs to start X...
> 
> best,
> 
>   Ricardo Reis
> 
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