AccuRender nXt

advanced rendering for AutoCAD

So we ran a rendering for what ended up being 150 hours and came across a massive glitch or bug, I'm not sure what happened at all. It was a single task 1500 pass rendering so it shouldn't have taken nearly that long to begin with. So I grew suspicious there was an issue, upon completion I checked the image out and somehow even though multiple tests were run and the rendering showed fine in the nXt render a material bled throughout the entirety of the rendered image at approximately 6 feet up and angles to about 6.5 feet.

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Logging probably wouldn't help here (even if it existed).  This is the sort of situation where the software likely will not realize it has a problem-- but just go on crunching merrily away.  

You can pursue this the normal way, start with sending images (reduce the res if necessary) and explain how you got them-- res, render engine, farm specs, etc..  I have to warn you that farm problems are notoriously difficult to debug or even reproduce.  (Your best bet is always a reproducible problem.)  We have very few farm users so the thing tends not to get scrubbed as well as some other aspects of the software.  OTOH we do have a few users who have had good success with the farm.

Alternatively you can try to modify something you suspect might have caused the problem.  For example, render time is usually proportional to the total number of pixels (width * height of image).  If the slowdown is more drastic than this it may be caused by a machine on the network running out of memory.

If you're not already using the newer, hybrid engine, that may be a better way to go for you.  As many runs as you want can be combined using this engine.  If a run or two fails there's usually a salvageable portion.

Hmm, I figured a log wouldn't help much I just wanted a way to verify the problem that arose was not due to human error.  At this junction in time we're going to to be running the same rendering again using the accurender and the farm at a reduced pass count to see if the issue can be reproduced. If it is in fact something that can be reproduced I will as you suggested post further updates. In the meantime I will check into the hybrid engine, thank you.

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Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"Yeah-- I understand.  I just think you may find you have a similar problem in this new engine with trying to estimate how many passes will be good enough.   That can vary a lot. You're always going have some error, allocating…"
Jan 7
Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"The problem is when I'm running several renders over a weekend. How will I know how much time to allocate to each one? I wouldn't want them to run for the same amount of time, as one may over-cook to no extra benefit, while another is…"
Jan 7
Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"It's an easy feature to add, but I'm pretty sure with this new version you'll find a time constraint to be more reliable.  The rendering below is probably done already, with a noise filter, or close to it."
Jan 7
Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"I suspect it will take a lot longer without the noise filter. These similar renders ran for 5 minutes each. nXt performed 127 passes and Studio performed 344 passes. Incidentally, is it possible to set a render running to a certain number of…"
Jan 7
Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"Pretty much the only thing sacrificed has been the sandpaper bump, and even then only in certain circumstances.  Everything else is preserved nicely including any random noise you add to color maps. Hard to say on performance without the…"
Jan 7
Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"Reliance on the noise filter does concern me a little. A lot of my work involves wood grain and fabrics, both of which can have varying degrees of texture which affect the way light is reflected. With the noise filter off, are renders likely to take…"
Jan 7
Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"Yes, that works now, though a bit glitchy. Dragging and dropping materials doesn't work (is it supposed to?)."
Jan 7
Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"Found it-- it's not working properly if the palette is docked.  For now if you drag the AccuRender Studio palette and make it floating everything works.  I'll see what I can do."
Jan 6

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