IPR much faster than render current frame. Why?

[haakon]

Short question: What makes the IPR translate and render faster than the normal mental ray render?

Long version: I have a new computer with 24GB ram on 8 cores. Renders seem to generally take a long time to translate, but when the renders start they go very fast. One scene file with a character rig translates extremly slow, but the IPR is very fast, and starts instantly. So it seems like the IPR skips a few minutes of uneccesary translation. Why is this, and can I make the render translate as fast as the IPR?

[joojaa]

Because ipr does not support all the features normal renders do also it has differet options. For example it supends most of the sccripted export generation thet you might want to customize. It uses also incremental update which the render does not do, because its production safer to ensure thet the job is clean.

Also you might have a simulation runup issue.

[haakon]

Thanks:) I'll try to look into that.