Cannot cancel IRAY Render, have to kill DAZ Studio 4.8.0.9

nakamuram002

I am trying to render a large scene with many objects in DAZ Studio 4.8.0.9. My scene get to 95% completion (according to the log, the progress bar shows 100%) and my scene looks great, so I try to cancel the render and save the results. At this point DAZ Studio just hangs, my render window goes blank, and I have to terminate DAZ Studio. This has happened to me twice. How do I stop my render?

prixat

Is that the 'cancel button' on the progress bar?

Richard Haseltine

What was in the scene? There's a known issue where there are lots of intersecting, transmapped surfaces - nVidia is apparently aware of this.

nakamuram002

prixat said:

Is that the 'cancel button' on the progress bar?

It does not matter if I use the cancel button on the progress bar or the render window. What seems to be happening is that IRAY stops after reaching the completion percentage -- There are no more iterations. However, the buttons in the render window that allow saving are disabled, so I cancel the render so I can save. Unfortunately, DAZ Studio never responds.

I have tried reducing the default 95% completion to 90%, with the same result.

nakamuram002

Richard Haseltine said:

What was in the scene? There's a known issue where there are lots of intersecting, transmapped surfaces - nVidia is apparently aware of this.

I wish I could show you the output. Maybe there's a "render-in-progress" cache somewhere. My scene has:

G2F (V6)
3Dream's Tatiana Hair
DogZ's Time for School Outfit, Shoe, Socks
Hideout's Schoolroom -- http://www.sharecg.com/v/79534/gallery/11/Poser/Simple-Japanese-HightSchoolClassroom

I am trying to render a 1200X1200 image with Environmental Lighting (Infinite Sphere) and surface lighting using the Classroom Ceiling with a white ambient of 100%. I get to 90% completion in 51 mins.

stga

I am having a similar issue.

My system is 8 core, 32G of RAM, flash swap drive. The average CPU utilization sits at about 40%, there is no heavy I/O happening, and the memory is sitting around 50% free (DAZ is only using about 4G total). The scene is not complex: 8 items total, only one a G2 figure (Belle), two walls, some props, a ground and some grass. Not a lot of polygons.

Yet the system is almost unusably slow after a couple of hours of rendering. Changing windows focus takes minutes (literally), and even clicking on the cancel button is simply ignored. I even tried bringing up the task manager, and pushing the process priority to low, but this had no effect which I could perceive.

I know this is beta, and I _really_ like iRay, but the inability to pause, control CPU allocation etc. makes it very hard indeed to use this.

With Luxrender I could allocate CPU to individual render processes, and distribute across multiple systems (iRay can do this too, but we have no API yet).

Any advice to help would be appreciated!

nakamuram002

To set DAZStudio's priority and cpu affinity:

1. Open "Task Manager"
2. Click on the "Processes" Tab.
3. Right click on "DAZStudio.exe" and choose "Set Priority" or "Set Affinity".

This helps to an extent, however since the GPU is being used to render, videos don't play smoothly. I have a 4770K CPU, 16G RAM, and a GEForce GTX 660 1GB video card.

jaebea

I have had this problem too. Been trying to render park scenes with lots of plants and trees. Render gets stuck and won't cancel. I have a similar setup as nakamuram002. Sometimes, in these scenes, Iray won't seven start up.

nakamuram002

Figured out what I was doing wrong. I was cranking up the ambient on the ceiling (like I do in mcjTeleblender/Cycles) to get my indoor/overhead light. I needed to apply the IRay Emissions Shader. Now my scene renders in 30mins, under 10mins if I turn off the outside/environment lighting.