run through of my working method for vray 2.4 sampling in arch vis scenes.

[joconnell]

17 hours for that is madness. Count me in as one who'd love to have a go.

Solid process though - just much bigger numbers involved than i'm used to

Yeah, to be fair it was a jump to really unoptimized settings on the materials so quite a dramatic change!

[Dariusz Makowski (Dadal)]

I havent had 17h arch viz render since 2008 I wonder what went wrong here hehe

[pengo]

First of all Joconnell, thanks for your work, very interesting.
About rendertimes, in my opinion, yet cheking subpixel on, u could get good improvements in therms of speed. Then for other parameters to optimize, I have to watch carefully the other settings u used. Do u have high depth values in reflections?
Thanks again

[vlado]

So here's a first test; I didn't test how long the original set up renders on that machine though; I just went straight to BF+LC (LC reverted to default settings, only left subdivs to 2000 and "use light cache for glossy rays" on) and your basic universal settings.

This is with V-Ray 3 though, will test 2.4 a bit later. I'm also doing a few more renders with different settings.

Best regards,
Vlado

[vlado]

Here is a second attempt; only difference is "min shading rate" is 8, to put more samples on the lights/materials/GI rather than AA. Much cleaner for only slightly longer render time.

Best regards,
Vlado

[vlado]

Here Embree was not the time saver I was hoping it to be, and it is a bit less forgiving to overlapping faces, but it still shaved off a few minutes of render time.

Best regards,
Vlado

[Dariusz Makowski (Dadal)]

There we go. I much more like vlado render length

I have a simple rule for rendering. If draft test takes longer to render than 2 min = I did something wrong.

If final render longer than 10-20 min = something went wrong

[tricky]

Watched a bit of this. Looks great and glad to see that my process now looks similar. However, the rendertimes you were working with would mean I'd have got bored, used Solid Rocks and gone down to the pub for a few beers

(I think after just a couple of images employing these techniques, everybody will be able to skip a lot of the testing process and drill down to values that are about right straight away. Yes, each scene is unique, but if you do a lot of interiors (for instance) they will all be largely the same setup)

[pengo]

Tricky sorry if I reply about what u wrote, but when I read about two beers.....
I remember, when here:
http://forums.chaosgroup.com/showthr...546#post597546
solid rock didn't told u to use vraylightmtl to cut rendertimes.
So maybe joconnell there in that case, with his settings could get faster renderings respect what u was getting, going so to take two beers, instead to fight with a known problem u was facing.
I don't think he deserves this kind of sarcasm
I found joconnell always available, gentle person, and always very professional in every stupid doubt I got in the past, or everyone got and wrotes here in this forum.
He did a very appreciable thing, doing a tutorial so well detailed showing how to have always better control on the vray engine.
Even who knows it or part of it, in my opinion should thanks him for his tutorial.
I saw in the years very impressive artists in this site, and often I saw most of them was using so strange values in their usage of thi engine, that often gave longer rendertimes respect an optimized setting
Seems that not so much people here has the absolute right approach to vray settings or the complete knowledge (except Vlado and the developers of course) to get controlled rendertimes ever in every situation.
So this tutorial as the Akin Bilgic one should always be appreciated and respected.

[tricky]

Tricky sorry if I reply about what u wrote, but when I read about two beers.....
I rememer, when here:
http://forums.chaosgroup.com/showthr...546#post597546
solid rock didn't told u to use vraylightmtl to cut rendertimes.
So maybe joconnell there in that case, with his settings could get faster renderings respect what u was getting, going so to take two beers, instead to fight with a known problem u was facing.
I don't think he deserves this kind of sarcasm
I found joconnell always available, gentle person, and always very professional in every stupid doubt I got in the past, or everyone got and wrotes here in this forum.
He did a very appreciable thing, doing a tutorial so well detailed showing how to have always better control on the vray engine.
Even who knows it or part of it, in my opinion should thanks him for his tutorial.
I saw in the years very impressive artists in this site, and often I saw most of them was using so strange values in their usage of thi engine, that often gave longer rendertimes respect an optimized setting
Seems that not so much people here has the absolute right approach to vray settings or the complete knowledge (except Vlado and the developers of course) to get controlled rendertimes ever in every situation.
So those tutorials as the Akin Bilgic one should always be appreciated and respected.

For goodness sake, what are you on about??? I think you misunderstood the humour fella!

[vlado]

So to get back on topic, the scene with the original settings (IM+LC and lots of subdivs for the dome light and maybe elsewhere) does indeed render for about 2h 10 min on the particular machine I am using, which is much longer than what I got with BF+LC. I have not profiled yet what causes the longer render time, as I want to make a few tests with V-Ray 2.4 first.

Best regards,
Vlado

[glorybound]

what did you get with BF+LC? It would also be great to hear your time with VRay 3.0

So to get back on topic, the scene with the original settings (IM+LC and lots of subdivs for the dome light and maybe elsewhere) does indeed render for about 2h 10 min on the particular machine I am using, which is much longer than what I got with BF+LC. I have not profiled yet what causes the longer render time, as I want to make a few tests with V-Ray 2.4 first.

Best regards,
Vlado

[vlado]

what did you get with BF+LC? It would also be great to hear your time with VRay 3.0

I already posted above...

Best regards,
Vlado

[glorybound]

Got it! I didn't look at the stamps

[pengo]

Vlado, could be a geometry problem again with some other problem still to verify? I mean, in video, avoiding the overlapping geometry, gaves rendertime improvements as joconnelli shown. Could it be related to the fact that most of yhe walls have no thickness? Seems to me, watching the video that walls have no thickness, I have not the file to be sure of it. I remember that was not suggested to use walls made with single plane to avoid problems to vray like irrad map artifacts, light leaks or something else.