Hi Tom, > In general, the 3D X server in a VirtualGL server should be thought of > > as a shared resource, and it shouldn't be used for any > > security-conscious activities. If you need to use a local X server on > > the VirtualGL server, then I strongly recommend configuring two X > > servers-- one headless that is dedicated to VirtualGL and another one > > that can be used for local activities. > > So, it's, in fact, possible to operate two X servers simultaneously, one > normal and one headless, with only a single physical GPU? > > It would solve the problem. I've never used such a configuration before, > and I'm not sure how a X server can run on a graphic card, but without > actually creating the "head". Is there any documentation for that? >
I want to achieve a similar setup (application isolation) for an HPC env and I was asking similar question here https://groups.google.com/d/msg/virtualgl-users/m5MTaW-P08g/CtOO5PfuCQAJ I'm currently exploring running per user Xorg bound to a given GPU (allocated by the HPC scheduler for instance) So far binding to a given GPU is working (just tweak to xorg.conf to reference the GPU PCI path basically). Running rootless is not that conclusive, for now, unfortunately since Xorg needs to have access to a tty upon startup and those are root owned by default and get chown by PAM (pam_console) upon user console login. There is also the fact that Xorg seems to want access to input devices anyway, if run rootless it will only spit a warning (about not beeing able to bind input devices) but it starts anyway. I've asked for help in Xorg mailing lists, no luck for now. I'll report back if I have come up with a running setup. As anserwed by DRC, in the other thread : "this be addressed in VirtualGL 3.0 by the introduction of an EGL back end, which will allow VirtualGL to be used without a 3D X server (with some limitations.)". Youssef Ghorbal -- You received this message because you are subscribed to the Google Groups "VirtualGL User Discussion/Support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/virtualgl-users/1b33ef8f-8adb-49cd-a717-e8c46e2d9bd7%40googlegroups.com.
