Light Cache Hanging

[prey1979]

I was wondering if anyone has run into this problem before. Im rendering a 3600-2160 image of an interior space and as the LC is being built it runs fine until it gets to about half way and then it just sits there hanging and the estimaged time just keeps going up, and then after a while the progress bar moves back for a bit. Ive rendered this scene out using really low settings and low resolution for quick tests but the instant i take it up to production it fails... it sat over night building light cache for 14 hours never passing the 50% mark, it's very perplexing.

My system specs are dual xeon L5640 total 24 processes
12 gb ram
windows 7 64-bit
max design 2010 sp1
vray 1.5 sp 5

any help would be greatly appreciated

kind regards

Ryan

[jacksc02]

any errors in the vraylog?

[vlado]

Do you have any displacement in the scene too?

Best regards,
Vlado

[tricky]

Any Architectural materials in there?

[Dariusz Makowski (Dadal)]

autograss? or other plugin? cracks?

[prey1979]

NO CRACKS i have a legit copy as does everyone else in my office since we purchased it in 2002 thankyou

no autograss no other plugins all vanilla install to prevent any errors...

i hm going to check through my materials to make sure there are no Arch mats as im working with Revit 2011 now and i find they do sneak in there so i will check thanks!!

Vlado: no displacement i had seen that brought up before i searched the forum before posting so i turned off displacement and i still get it hanging however i did render from a different physical camera in the scene and it worked i then tried another one and it worked i went back to the camera that had hung and it hung again...

[vlado]

Ah, so it is repeatable; is it possible to get me that scene to vlado@chaosgroup.com ?

Best regards,
Vlado

[nirsul]

Check for Raytrace material or maps

Nir

[prey1979]

vlado is there a size limmitation? if so i can setup an ftp and email you the link
it seems to hang on 2 camera's which are more or less the same spot i came in his morning to see it just stuck on rendering a single spot on the floor...it seemd to go through the light cache this time...

[vlado]

If you can get me a ftp link that would be great, otherwise please email me to vlado@chaosgroup.com and I can set up an ftp account here.

Best regards,
Vlado

[add101]

'i hm going to check through my materials to make sure there are no Arch mats as im working with Revit 2011 now and i find they do sneak in there so i will check thanks!!'

An easier way than checking through all the materials is to right click in viewport and select vray scene converter. This changes materials and raytraced shadows into vraymaterials and shadow.