Re: Draw Lockup (was Performer Woes)

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Rémi Arnaud (remi++at++remi.engr.sgi.com)
Tue, 28 Oct 1997 16:40:11 -0800 (PST)

Jean-Luc Dery wrote:
>
>
> On Oct 28, 8:59am, Jan Barglowski wrote:
> > Subject: Draw Lockup (was Performer Woes)
> >
> R=E9mi Arnaud wrote:
> > > > Background:
> > > > We upgraded from 1 to 3 Pipes on our iR. 2Gb RAM, Iris 6.2, and
> > > > Performer 2.1. Processor locking and non-degrading priorities via
> > > > the pfu calls worked well under 1 pipe, but now we cannot lock down=
>
> > > > the draw process without locking up (hard) the entire machine!
> > >
> > > Which means you are going from 1 draw process to 3 draw process (and=
>
> > > also from 1 cull to 3 culls if you run APP_CULL_DRAW).
> > >
> > > So the question is: do you have enough CPUs to handle 3 pipes with 3=
> draw
> > > processes locked ?
> >
> > We have 16 processors, and I am currently locking them individually
> > by number. However, perfly (which doesn't lock by number, but by
> > next available?) crashes as well. It's only when the -D option in
> > perfly is used that causes the lockup.
> >
> > jan
>
> We are having the same problem on a 2 CPU Octane (IRIX 6.4), with a Perfo=
> rmer
> 2.1 multiprocess application set to either APPCULL_DRAW or APP_CULL_DRAW.=
> The
> call that seems to be causing this is pfuPrioritizeProcs( true ). When th=
> e
> application doesn't run as root, we get a notification: "must be root to =
> set
> non-degrading priorities" and every thing runs OK; but when running as ro=
> ot,
> the same thing happens, a total freeze and we have use the h/w reset butt=
> on.
>
> Any idea on what's causing this ??!

 The placement is surely bogus. The good news is that you have the source code
 of that routine in share/Performer/lib/libpfutil/lockcpu.c
 You can modify it and build your own libpfutil.

>
> Jean-Luc
>
> -- =
>
> _________________________________________________________________________=
> ____
>
> Jean-Luc Dery Discreet Logic
> System Engineer 10 Duke Street
> 3-D Graphics Technology Montreal (Quebec), Canada, H3C 2L7
> Tel: (514) 954-7239
> Email: dery++at++discreet.com Fax: (514) 393-0110
> _________________________________________________________________________=
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