[Sidefx-houdini-list] stability of mantra on multi core machines?
mobrien at pixar.com
Mon Jul 28 09:27:38 EDT 2008
I'm trying to render a scene that around a million particles as transparent
sprites. I've turned off ray tracing, no gather, no other geometry. The
shaders are a layer and a mantra sprite procedural. The scene was more for
testing than anything else.
I've had no problems on a machine with two cores. However, on an eight core
machine, my record is rendering 122 frame in a row without a crash or
deadlock. Usually I get less than 10 frames before the process freezes.
Michael K O'Brien Production Engineering
Pixar mobrien at pixar.com
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> -----Original Message-----
> From: sidefx-houdini-list-bounces at sidefx.com [mailto:sidefx-houdini-list-
> bounces at sidefx.com] On Behalf Of paul simpson
> Sent: Monday, July 28, 2008 4:45 AM
> To: sidefx-houdini-list at sidefx.com
> Subject: Re: [Sidefx-houdini-list] stability of mantra on multi core
> we've been using mantra in multi-threaded mode extensively recently and
> found it to be pretty rock solid! this is both in pbr mode as well as mp.
> also using the gather construct a lot - all seems fine and dandy. can you
> be more specific with what your doing? ie, passing information using
> gather? importing vars from other contexts (displacement, light),
> sub-d's, dof etc. etc....?
> 2008/7/26 Michael K O'Brien <mobrien at pixar.com>
> > Hola~
> > I'm getting mantra (that ships with 9.1.179) to wedge fairly
> > on
> > a dual proc/8 core machine. When I use it on a dual and single proc
> > machines, I haven't had these problems.
> > Anyone else out there rendering multiple frames on Linux with a multi-
> > machine?
> > When it goes thru, it is incredibly fast. I'm getting 6-7x speedup from
> > single processor.
> > MO
> > --
> > Michael K O'Brien
> > mobrien at pixar.com
> > Pixar
> > JEN: Just because it's Taco Bell doesn't mean it's not dinner!
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