House 05 Rendering issues

# 1 29-10-2015 , 05:57 PM

Subscriber
Join Date: Feb 2015

Posts: 154

Hi All

I have been trying for the last few days to get a batch render out of Maya after following the tutorials in preparation for Nuke but am not really seeing progress.

2 days ago i started a Batch render at 7:30am by 11:30pm that night the script editor output said it was 70% complete. I left it overnight and in the morning it was still at 70% so i cancelled the render. Checked the file locations and there was a 128kb exr file there which was not complete.

I have just tried to manually render a 4k image using the render view. Over the past week or so i have just been getting a Blue screen saying "Rendering..." at the bottom. on this occasion i am getting part of an image as though it starts rendering but just doesn't update the view port.

I am able to render a lower resolution without issue though. I wouldn't consider my custom built machine to be low spec either.

Any help or suggestions would be greatly appreciated.

Many thanks

Myth

Attached Thumbnails

Click image for larger version

Name: Capture.JPG
Views: 481
Size: 99.1 KB
ID: 56944

Custom built W10 Pro 64 bit, Hazwell Intel 5820, Asus X99 MOBO, 32 GB DDR4 Ram, EVGA nVidia GTX1080 Founders Edition, 512GB SSD Primary HDD, 16TB Storage, 27" Samsung 4k Display. Wacom 27QHD, Oculus Rift CV1

Quote

# 2 29-10-2015 , 07:37 PM

Super Moderator
Join Date: Dec 2006

Location: South FL

Posts: 3,522

What are your render logs saying?

- Genny
__________________
::|| My CG Blog ||::
::|| My Maya FAQ ||::

Quote

# 3 30-10-2015 , 02:17 AM

SM Tea Boy
Join Date: Apr 2002

Location: Prague

Posts: 3,228

At 4k my guess, you have run out of ram. Mental ray will take days to finish a render if it runs out of ram. That scene with everything in it at 4k will take about 20gb to render efficiently there are a lot of factors involved of course but i'd say for 4k renders you'll want to spit the file and network render or at least upgrade to 24gb of ram

Mental ray loves ram. 1080p would be my recommendation if you're rendering on one machine.

If you pull up the task manager after you have been rendering for a while and you see the ram is full, well at that point MR is basically moving very very slowly.

There are ways to use less ram of course but if you want to do 4k shots with plenty of hi res grass and trees and what not, then the simplest solution is add as much ram as you can.

From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"

Quote

# 4 30-10-2015 , 02:24 AM

SM Tea Boy
Join Date: Apr 2002

Location: Prague

Posts: 3,228

PS

Check the task manager if it is as i suspect ram, lower the polycount of the trees and grass, IE use less geo for the grass you can thin it out quite a bit and keep the same look. When making the trees in PFX keep the polycount lower. If you don't need 4k don't use it 1080 is normally enough.

If you need 4k consider adding a bunch of cheap render nodes. And definitely add more ram MR will love you for it.
David

From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"

Quote

# 5 30-10-2015 , 08:21 AM

Subscriber
Join Date: Feb 2015

Posts: 154

Hi,

Many thanks for the replies, I did bring task manager up and the memory way around 70% used but i will give another test just to be 100% sure. I personally don't want to rendering unless i can get the best user added image

so I guess if need be, another 16GB DDR4 RAM should do the trick user added image

Thanks

Myth

Quote

# 6 30-10-2015 , 04:50 PM

SM Tea Boy
Join Date: Apr 2002

Location: Prague

Posts: 3,228

If you see you ram doing this you need more. Excuse the crude paint over user added image

Attached Thumbnails

Click image for larger version

Name: ram.jpg
Views: 440
Size: 18.5 KB
ID: 56948

From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"

Quote