Render Setting Questions

leo04

The Progressive Render settings have me a little confused.  I could really use some advice on this.

I have Max Samples set to 50

I have Max Time (secs) set to 1200, which my understanding is 20 minutes.

After several test runs the renders have taken as long as 1 hour and 30 minutes.

My understanding from what I have read here and on the web is that the Max Time setting is the length of time the entire render is limited to.

With a setting of Max Time (secs) set to 1200, the render should not take longer than that, yet is does.

What am I missunderstanding or what do I need to change?

I want a good to high quality render, but I also want it quickly because of a production time restraint.

Thanks.

DAZ Version 4.24.0.3 (64 bit)

Nvidia GeForce RTX 3060 Driver version: 572.83.

Hardware Accelerated GPU Scheduling is enabled, DAZ Studio added to the list of apps.

PC Specs:

Processor: 11th Gen Intel(R) Core(TM) i7-11700 @ 2.50GHz   2.50 GHz

Installed RAM: 32.0 GB (31.6 GB usable)

Windows Edition: Windows 11 Pro Version: 24H2 OS Build: 26100.3915

Squishy

I can't reproduce this, when I set Max Time to any number of seconds (e.g. 30) it stops at that time regardless of how else I set it. Are you rendering single frames? Max Time is the amount of time limited for each frame, if you're rendering an animation or image series.

Richard Haseltine

If you are not using the CPU  then the settings on its loading ar irrelevant anyway.

Just how long does Iray take to iterate? As far as I am aware the cut-offs cannot be assessed while a path is being traced, so if some are taking a very long time that may protract the process - though an extra hour or so does seem extreme.

leo04

Squishy said:

I can't reproduce this, when I set Max Time to any number of seconds (e.g. 30) it stops at that time regardless of how else I set it. Are you rendering single frames? ax Time is the amount of time limited for each frame, if you're rendering an animation or image series.

 

Single frame.  At default settings it usually take 2-3 hours.  I set Max Time to ) and Max Samples to 500 and it was still on Itteration 1.

Looked through the list and saw it was listing Itteration 1 then Iteration 2. over and over.

 

Squishy

Imo you should set everything back to default and enable CPU fallback, and then set Max Time to something very low for testing (like 30 seconds) and see what happens. Sounds like GPU rendering is just not working, for whatever reason (diagnose and fix that separately) but if I were you I'd like to know if I could at least get SOMETHING out of the renderer.

Squishy

oh and to answer the question you asked about what CPU Load Limit should be set to: generally you should set this to the number of processor cores your operating system recognizes, e.g. look in Task Manager, under CPU, right click -> Change Graph To -> Logical Processors (in this case I have 8 logical processors)

leo04

Your image shows 4 Cores, 8 Logical processors. Are you saying set it to the number of Cores, or Logical Processors?

In my Task Manager it does not give me the option to change to show the logical processors. I an running W11.

Sorry for being confused....

Thanks.

Squishy

Logical processors, if (in my case) I set it to the number of actual cores (4), the total CPU utilization would be 50%, because it is brokered through the operating system, which treats the CPU as if it had 8 "processors".

my fault for using the term "cores" imprecisely, sorry