single render vs farm render

[Miguel Tano Adanes]

Hi everybody,

these two images are respectively one single machine render (75 passes) and a farm render (100 passes): what are those shadows in the farm render?

[Roy Hirshkowitz]

Check the versions for me just in case.  Right click on the farm icon-- hit Restore, then About.

[Miguel Tano Adanes]

Ok Roy, here you are: 1.0.273 evaluation.

[Roy Hirshkowitz]

Thanks-- the version is fine.  If you've got .nXtImage formats of your two examples above, you may be able to diagnose the problem yourself.  The Info panel has a few pieces of information that may be relevant, such as Engine and Indirect Lighting.

[Miguel Tano Adanes]

Unfortunately I only have nxt.image file of the farm render, not the single one. I'll produce new ones as soon as I can.

[Miguel Tano Adanes]

Roy, there's no way to have pathtracer in farm rendering for me here! I still have strange shadows in the final image. And there's no way to have panoramas at the resolution I set! So, if you don't mind, I attach the file with everything included.

Thank you for what you could do in advance.

[Roy Hirshkowitz]

Yep-- sounds like there's a problem.

[Miguel Tano Adanes]

Right, thanks Roy.

So... sounds like next w-end my machine will be overcharged for the final render! :)

[Roy Hirshkowitz]

I've got this reproduced.  It turns out to be a more interesting problem than I originally suspected.  The adaptive stuff (see above) was, in fact, a problem.  There is an additional, more significant problem, related to some daylighting performance improvements which I added a while back.  I don't have an easy fix for this.

*****

Basically using the farm to render a single path traced image, particularly one with daylighting, isn't going to work well right now and should be avoided.  No problem batch rendering multiple views on the farm using the Path Tracer.