time problem in render

[nico]

hi boys i've a big problem of time render for a scene with high number of reflection.
this is the grab screen.
for a 1000*500 = 55min on i7 920.
there are same parameter to modify to accelerate the render?
i need to render the object for a brochure 5000*2500 px
thank's

sorry for wm but is a prototipe object
this is the render with probl.
is a object in studio (download scene of piano in kray depo file)

[jure]

This is the kind of scene where turning off "Cache Irradiance" could be quite a lot faster.

[nico]

This is the kind of scene where turning off "Cache Irradiance" could be quite a lot faster.

thank's jure you can explain me where i need to turning off cache?
in really only in this render there is a time problem.
when the camera is global object the render time is good!!!


i've see this render in MWR, VRAY and KRAY....the best effect in < time is KRAY!!!

[jure]

General tab > Cache irradiance OFF

[nico]

General tab > Cache irradiance OFF

i know it

i would like to know under what conditions or not to use the cache irradiance!!

[jure]

scenes like this - where you have many inter-reflections...

[nico]

scenes like this - where you have many inter-reflections...

mmm witout cache the render time is + slow!!!!

[jure]

Hmm try prerender passes set to 1 then.

[nico]

Hmm try prerender passes set to 1 then.

nothink...yesterday i've set kray on my second pc q6600 and from 10 pm to now 10 am i've rendered only one pic
on i7 i've rendered 3 image in MWR all 4000x2000 px multilight aptived ad 13 SL.
i hope to publishing the image so can see the work.

witout cache irradiance the render time is impossible. now i'm using cache and i've used a kray shader option for small part in crome but time is very very slow....

the big proble is that the client has see the preview in Kray but for tomorrow i think possibl send only render in MWR....the render remaining in kray unaffidable...15 min = 12h it's not possible...delete it in new version please

[jure]

Could you send me your scene so I can check what's going on? Your render times are way too high.