[Sidefx-houdini-list] stability of mantra on multi core machines?
John Coldrick
jc at axyzfx.com
Tue Jul 29 20:30:20 EDT 2008
On Tuesday 29 July 2008 18:47, Antoine Durr wrote:
> A question for all of you rendering on multi-cores: are you in effect
> starting to treat your renderfarm as individual hosts rather than as
> multiple hosts? I.e. I'm unclear as to the benefit of rendering 1
> frame on n cores vs. running n frames on n cores. Is it that the
> memory footprint is getting so big that you're consolidating cores to
> bulk up on ram for the given job? Just curious. Thanks!
I'm not entirely sure who's measuring what with these results of multi core
renders not performing well. On 8 cores you are getting significantly faster
than on two, perhaps not 4 times, but pretty close.
This is mediated by many convoluted factors - IO, network, exactly what sort
of render you're doing...
Here we submit renders to the grid and can ask for a preferred number of
cores, in which case it will use n or less, or we demand a minimum. If
you're rendering very fast small renders(like straight ahead particle
systems) then I'd recommend 1 core per render. If you're doing relatively
slow renders, then anywhere from 2 to 8, depending on memory issues.
Cheers,
J.C.
--
John Coldrick www.axyzfx.com Axyz Animation
416-504-0425 477 Richmond St W
Toronto, ON Canada
jc at axyzfx.com M5V 3E7
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