RE: NX client with root graphics

From: Fine, Valeri <fine_at_bnl.gov>
Date: Wed, 4 Oct 2006 14:13:44 -0400

Hello Stan,

  Thank you very much for your update
  (by the way, the "firefox" you mentioned is Qt-based application)   Stan, can you run ROOT "benchmarks.C" macro?   I would be interesting to see the ROOTMARKS with the "normal"   "X11/Root- X11" vs "X11/QtRoot" vs "NX/QtRoot".

  Thank you.

Best Regards

                         Valeri Fine

---

Brookhaven National Laboratory
Upton, NY 11973, USA
Phone: +1 631 344 7806
Fax: +1 631 344 4206
E-mail: fine_at_bnl.gov

> -----Original Message-----
> From: Stan Seibert [mailto:volsung_at_physics.utexas.edu]
> Sent: Wednesday, October 04, 2006 12:40 PM
> To: Fine, Valeri
> Cc: Otto Schaile; Klaus.Steinberger; roottalk_at_pcroot.cern.ch
> Subject: Re: [ROOT] NX client with root graphics
>
> To follow up:
>
> After a few days of trying out the full QtRoot (with the extensions)
> with 5.13.02, neither I nor the other NX user here have observed any
> NX segfaults. Without a reliable testcase to trigger the NX bug, it
> is hard to draw conclusions. Nevertheless, the current evidence is
> that using the Qt layer fixes the problem.
>
> Thanks for the suggestion! We'll keep using QtRoot to avoid this NX
> issue in the future.
>
> ---
> Stan Seibert
>
> On Sep 26, 2006, at 2:42 PM, Fine, Valeri wrote:
>
> > Can you check you can reproduce this problem with Qt-layer ON ?
> > I was enable to install NX for the "BNL cybersecurity reason" to
> > check things myself
> >
> > Thank you.
> >
> > ________________________________
> >
> > From: owner-roottalk_at_pcroot.cern.ch on behalf of Stan Seibert
> > Sent: Tue 9/26/2006 12:25 PM
> > To: Otto Schaile
> > Cc: roottalk_at_cern.ch; Klaus.Steinberger
> > Subject: Re: [ROOT] NX client with root graphics
> >
> >
> >
> > On Sep 26, 2006, at 8:36 AM, Otto Schaile wrote:
> >
> >> Hi Rooters,
> >> the NX technology ( see e.g.: http://en.wikipedia.org/wiki/
> >> NX_technology) offers
> >> a cheap and efficient access to a remote desktop (Linux) even at
> >> low bandwidth (UMTS, GPRS).
> >> E.g. firefox on a remote machine runs without problems.
> >> However running root with graphics crashes the NX session
> >> immediately or
> >> after some time.
> >> Has anybody out there experience with that?
> >
> > Yes, I have experienced the same problem with NX and ROOT. It seems
> > to happen to me most often when ROOT is exiting and closing windows,
> > although the bug is not deterministic. I have not yet figured out a
> > sequence of events which always cause it.
> >
> > I assume it is an NX problem, but ROOT is the only program that
> > triggers it in my experience.
> >
> > ---
> > Stan Seibert
> >
> >
Received on Wed Oct 04 2006 - 20:14:37 MEST