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We will be testing the wall clock time for all renderers. Every renderer will be run 3 times in succession and the average time will be taken. We make sure that nothing is running on the machines so not to slow down the poor renderers. The render is launched from Maya. We have three test machines available:

Mac

Linux

Windows

% lscpu

Code Block

Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                16
On-line CPU(s) list:   0-15
Thread(s) per core:    2
Core(s) per socket:    4
Socket(s):             2
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 26
Stepping:              5
CPU MHz:               2395.000
BogoMIPS:              4787.24
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              8192K

% free -m

Code Block
total used free shared buffers cached Mem: 11984 8139 3844 0 151 4728 -/+ buffers/cache: 3259 8725 Swap: 0 0 0

The Setup

	RenderMan	3Delight OSL
Screent Shot
Remarks	Min Samples = Max Samples Light Samples = 2, seems to give closer results to Arnold	Only shading samples to set for sampling BRDFs. 3Delight OSL takes care of the rest.

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185 seconds

	3Delight OSL	Arnold	RenderMan
Image
Total number of rays	2228.7 5 Millions25	31.7 6 Millions	2330.1 9 Millions
Time on Mac	66 seconds	180 seconds		Time on Windows
Time on Linux	33 seconds	50 seconds	74 seconds
Compared to 3Delight OSL *	--	2.4 times slower	2.75 times slower

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Render time is almost identical, 64 seconds for the render, meaning that LP

abcmeshlight.katana

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The Setup