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Bug or "Feature"?

waltn3mtjwaltn3mtj Posts: 112
in The Commons

I just lost a 24 hour render in DS 4.9 when I bumped up the max time and iterations as I noticed it would shortly be force completing long before the scene was ready. Since this doesn't change the quality of what has been completed up to this point, should it do that? I can see many other adjustments where making changes that have to be recomputed. As soon as I made the max number of seconds adjustment, it started back at 1........

Comments

  • MattymanxMattymanx Posts: 6,996

    I have seen it do that before and I have see it continue without restarting.  I am not sure what causes it as I have only ever adjusted the exposure values and the bloom option.

  • waltn3mtjwaltn3mtj Posts: 112
    edited November 2016

    Good, I'm not the only one to witness this. I"ve set EV and a few other things on the fly that logically should have forced it to at least regroup a little, but it went right on with the change without restarting..... Other times, resetting EV caused it to restart.You've seen my posts where I said this computer isn't the fastest one in the wild and didn't know if that was a factor.I haven't tried the beta yet and maybe this has been addressed. I may see about trying the beta this weekend as it is reported to render a little faster.

    EDIT: I've frequently changed the max iterations and max time with no issues so that got me thinking after having wo wait at least another day for it to get to where it was to begin with before it punted.

    Post edited by waltn3mtj on
  • AtiAti Posts: 9,185

    It starts the timing from 0, but does it also start the render process from total zero? I've had a few images where I paused the render, modified these limits, then continued the render. The time started from zero, but the rendering went on from the point it was paused.

  • waltn3mtjwaltn3mtj Posts: 112
    I wish! Counting and canvas updating all started over as if I had jusr hit [cntl] R. I'll see at 10 when I get home.
  • KnittingmommyKnittingmommy Posts: 8,191

    When I do this, the counter seems to restart, but usually, after a few minutes and recalculations, the percentage bar changes and it is still rendering from the same number of iterations that it was stopped at and keeps going.  I've never had it go all the way back to the beginning before.  You are supposed to be able to make those changes from within the image at the sidebar thingie and without it completely stopping your render.

  • mjc1016mjc1016 Posts: 15,001
    Knittingmommy said:

    When I do this, the counter seems to restart, but usually, after a few minutes and recalculations, the percentage bar changes and it is still rendering from the same number of iterations that it was stopped at and keeps going. 

    That's been my experience, too...it looks like it started over, but after a short time, it jumps back to where it left off.

  • ScavengerScavenger Posts: 2,674

    Ditto

  • BeeMKayBeeMKay Posts: 7,019

    I also can confirm that at first it seems like it's back to zero, but it then suddenly jumps ahead to the previous value. It may take a minute or ten, depending on the PC, though.

  • ben98120000ben98120000 Posts: 469
    edited November 2016

    In the middle of the left side of the render widow theres a little triangle for expanding/collapsing menu. I would recommend using options there instead options on the render tab, since they (options there) are supposed to be the ones that you can change during the render. 

    There is also File - Save Last Render... option, advantage of which is that it does not close the render window after saving the image. So it can be used for making multiple versions of the image. Like, render is finished so you save it with save last render, than change tone mapping, resume the render and save it again when its finished, etc..

    Post edited by ben98120000 on
  • waltn3mtjwaltn3mtj Posts: 112
    Knittingmommy said:

    When I do this, the counter seems to restart, but usually, after a few minutes and recalculations, the percentage bar changes and it is still rendering from the same number of iterations that it was stopped at and keeps going.  I've never had it go all the way back to the beginning before.  You are supposed to be able to make those changes from within the image at the sidebar thingie and without it completely stopping your render.

    I was hoping that would have been what would happen, it wasn't..... Once it did that and gave me a scare, but this time and others, it started completely over for the exact same adjustments.... I turned in a trouble ticket and they are looking into it. Hopefully if it was normal, they would have said so right off the bat.

  • waltn3mtjwaltn3mtj Posts: 112
    ben98120000 said:

    In the middle of the left side of the render widow theres a little triangle for expanding/collapsing menu. I would recommend using options there instead options on the render tab, since they (options there) are supposed to be the ones that you can change during the render. 

    There is also File - Save Last Render... option, advantage of which is that it does not close the render window after saving the image. So it can be used for making multiple versions of the image. Like, render is finished so you save it with save last render, than change tone mapping, resume the render and save it again when its finished, etc..

    That is where the problem came from. Sometimes it changes on the fly without any heart stopping events, sometimes it starts completely over as if I just started the render. I hope the trouble ticket I turned in will help the devs see something is amiss and leads them to fix it. The beta may have the solution, I'm not sure. At least they haven't replied and said that behavior is to be expected, so my hopes are that they see something wrong will at least put a fix in the next version of DS. It won't upset me if they keep their resrources aimed at the new version.

  • jardinejardine Posts: 1,215

    i didn't know you could even attempt to change any kind of anything once a render was running, so thanks for the post.  :)

    j

  • L'AdairL'Adair Posts: 9,479

    I've never changed the Max Time during a render, so I've not seen what the OP is describing. I've changed how I do things, too, in the past several months. If you turn Quality "Off," DAZ no longer tries to reach a specified Convergence. If you set Max Time to "0" it effectively turns off the time constraints, allowing your render to continue until the Max Samples value is reached. (The latest Beta lets you set Max Samples to -1 to turn that parameter off as well. Some folks are going to be very happy with that as it allows for endless rendering! Anyway...)

    I started turning things "off" some time back, and now my renders are controlled by Max Samples alone. I usually render final images while I sleep, so I set the Max Samples to something ridiculous so the image continues to render the entire time I'm away from the computer. When I return, if the image is clean enough, (not grainy,) I'll stop the render, but only by resetting the Max Samples by rounding up. So if the render is sitting at 12437 samples, I'll set it to 13,000. Now, if I need to do any spot renders to fix a problem area, I know exactly how many samples I need. (Sometimes, the spot renders were cleaner than the original render. Though that hasn't been the case since I got my new computer, which renders much faster than the older machine.)

    One caveat, I use Photoreal without canvases. I have no idea how changing a samples value would affect these other renders.

  • AllenArtAllenArt Posts: 7,175

    I'm always changing settings. I'm like a kid...if there's a button or a slider, I'm gonna push it or slide it to see what it does LOL

    Laurie

  • HeraHera Posts: 1,958

    How do you stop and re-start a render?

  • AtiAti Posts: 9,185
    Hera said:

    How do you stop and re-start a render?

    In Iray, you can cancel the render, keep the render window open (!!!), make minor modifications, then resume the render.

  • waltn3mtjwaltn3mtj Posts: 112
    jardine said:

    i didn't know you could even attempt to change any kind of anything once a render was running, so thanks for the post.  :)

    j

    I discovered this from another post. But, having it behave differently at times for the exact same adjustment had me wondering......

  • waltn3mtjwaltn3mtj Posts: 112
    L'Adair said:

    I've never changed the Max Time during a render, so I've not seen what the OP is describing. I've changed how I do things, too, in the past several months. If you turn Quality "Off," DAZ no longer tries to reach a specified Convergence. If you set Max Time to "0" it effectively turns off the time constraints, allowing your render to continue until the Max Samples value is reached. (The latest Beta lets you set Max Samples to -1 to turn that parameter off as well. Some folks are going to be very happy with that as it allows for endless rendering! Anyway...)

    I started turning things "off" some time back, and now my renders are controlled by Max Samples alone. I usually render final images while I sleep, so I set the Max Samples to something ridiculous so the image continues to render the entire time I'm away from the computer. When I return, if the image is clean enough, (not grainy,) I'll stop the render, but only by resetting the Max Samples by rounding up. So if the render is sitting at 12437 samples, I'll set it to 13,000. Now, if I need to do any spot renders to fix a problem area, I know exactly how many samples I need. (Sometimes, the spot renders were cleaner than the original render. Though that hasn't been the case since I got my new computer, which renders much faster than the older machine.)

    One caveat, I use Photoreal without canvases. I have no idea how changing a samples value would affect these other renders.

    I've used Spot Render to see how something would look, but didn't know you could render on top of a render already done. I use Photoreal as well, but I don't know the difference between using canvases and not. It just goes with whatever is the default setting.

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