hi,

"Mirfaelltkeinerein" <nomail@nomail> wrote:
> "Mirfaelltkeinerein" <nomail@nomail> wrote:
> > "Mirfaelltkeinerein" <nomail@nomail> wrote:
> > > I experienced a problem after upgrading a server from 1TB RAM to 2TB RAM (yes,
> > > really RAM) in our dual socket AMD EPYC machine with 48 cores/96 threads under
> > > Windows Server 2016. If I render a scene with 3500x1750 pixel, half of the cores
> > > are used (Windows processor group stuff) and the performance is quite nice. If I
> > > increase the resolution to 3600x1800 pixel (or more), it starts with 48
> > > threads/24 cores, but performance is bad and after several seconds, just one
> > > core/thread is doing all the work. Rendering can also not be stopped and runs
> > > till the end.
> > > I never experienced such a problem before. Do you have any ideas?
> >
> > Sorry, I posted the message into the wrong group. Could an Admin move it to the
> > Windows group?
> >
> > By the way, it doesn't happen, if I restrict the rendered area to the first 1000
> > rows for example, so it might be an scheduling issue with the total number of
> > pixels to be rendered.
>
> It still does happen for larger resolutions like 3800x1900 pixel even with
> restricted render region.

are you sure about the resolution being the .. culprit?  at least one user
renders (much) larger images with no mention of ill-effects.
<http://news.povray.org/web.5ceaeabd5e75640e3c1c78400%40news.povray.org>


regards, jr.

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