Re: [Ltsp-discuss] How is graphics divided between server and thin client?

2013-03-06 Thread Jakob Unterwurzacher
On 05.03.2013 22:56, Lachele Foley wrote: > I read the Wikipedia article and I searched "virtualgl ltsp". It > looks good! I believe that virtualgl is not being used in ltsp. Am I > correct? > > Is this something a mere user like me can add? (I'm a chemist, and I > can spell "computer graphics.

Re: [Ltsp-discuss] How is graphics divided between server and thin client?

2013-03-05 Thread Lachele Foley
I read the Wikipedia article and I searched "virtualgl ltsp". It looks good! I believe that virtualgl is not being used in ltsp. Am I correct? Is this something a mere user like me can add? (I'm a chemist, and I can spell "computer graphics.") If not, is it likely to be added by someone more

Re: [Ltsp-discuss] How is graphics divided between server and thin client?

2013-03-05 Thread Jakob Unterwurzacher
Hi Lachele! Opengl commands are sent over the network and executed by the client. Even on gigabit, the latency is probably very high compared to local execution. Virtualgl promises to solve that problem - and its wikipedia article is a good read on the topic! Best regards, Jakob Am 05.03.2013 17

Re: [Ltsp-discuss] How is graphics divided between server and thin client?

2013-03-05 Thread Lachele Foley
In a response to Jim a day or so ago, I gave reasons why localapps can't solve all our problems. To recap that, a brief example: The programs that generate our graphics can, for the large systems we treat, fill the 3-4 GB of RAM available on a client. While we could potentially move some things

Re: [Ltsp-discuss] How is graphics divided between server and thin client?

2013-03-05 Thread Richard Kweskin
Quoting James McQuillan: > Lachele, > > I'll try and explain how the graphics works in a thin client environment. snip > I've been focusing most of my rather limited time on running things on the > thin client. To me, everything is moving towards being web-based and the > thin client is becomin

Re: [Ltsp-discuss] How is graphics divided between server and thin client?

2013-02-28 Thread Lachele Foley
I guess another thing I'm saying is that I don't know whether or not to consider the slow graphics a bug. I brought up video playback because I really think things should work better, and I figure video is something people use commonly. I have no other benchmarks, etc., for comparison, except our

Re: [Ltsp-discuss] How is graphics divided between server and thin client?

2013-02-27 Thread Lachele Foley
Thanks for the detailed response. That helps. We have already done what we could find easily, for example setting "LDM_DIRECTX = True". We have also experimented with running things as localapps. And, our clients are generally pretty beefy (quad core, 4 GB RAM, nice graphics card). The bigges

Re: [Ltsp-discuss] How is graphics divided between server and thin client?

2013-02-27 Thread James McQuillan
Lachele, I'll try and explain how the graphics works in a thin client environment. A typical LTSP thin client is just a small computer with a monitor, keyboard and mouse attached to it. The thin client has a video card that the monitor is plugged into, and usually USB or PS2 ports for the keyboa

[Ltsp-discuss] How is graphics divided between server and thin client?

2013-02-27 Thread Lachele Foley
In our lab, we most often have to diagnose and fix video and graphics issues. By the way, if we can help as a testing environment, let us know. We push the technology pretty hard and have interest in making LTSP work better. Can you explain how the division of video/graphics is handled? More sp