$RMANTREE/bin/prman -d it -progress cornell_box.rib
$RMANTREE/bin/prman -d it -progress cornell_box.rib

X00003 {WARNING} Plugin warning: PxrVCM stored no photons, and no
merging took place. Either there are no lights in the scene, the lights
that you have in the scene are not enabled for bi-directional
integration, all the objects are mirror/perfect specular, or all of the
objects are volumes.

Pixar PhotoRealistic RenderMan 21.0
copyright (c) 1988-2016 Pixar.
linked Thu Jul 07 21:44:32 2016 PDT @1632360
build linuxRHEL6_x86-64_gcc44icc150_external_release

Rendered on Thu Nov 17 18:41:33 GMT 2016
Rendering at 500x500 pixels, 1024 maxsamples
	"prman.exr" (mode = rgba, type = it)

       Max resident mem: 526.41 MB
       Page faults: 0, Page reclaims: 39382, Swaps: 0

       Real time:     03:36
       User time:     26:01
       Sys time:      00:06

wahn/export_multi