Cycles BVH benchmark

Ok no one ever tests BVH performance and maybe this will help the devs when they try to optimize BVH.

So Here is my result of the test file.

Results Here
Download Here

CPU FX-8350 4.3 GHZ

WIN 10 x64

Blender 2.73a

Time : 00:35.21
Peak Memory : 1220.52 MB

ubuntu 14.04
i7-4930k 4.5ghz

blender 2.73a (official)

peak 1310.87
time 00:05.40

optimized master

peak 1310.87
time 00:04.55

I knew my AMD was behind in BVH but I didnt know it was that bad holy crap xD

Computer 1:

CPU Intel Core i7 4770 @3.4ghz (non-oc) / RAM 8gb 1600mhz / Xubuntu 13.10 64bits / Blender 2.73a 64bits official
Render time: 00:08.18 / Memory Peak: 1220.52M

Computer 2:

CPU Intel Core i7 4790K @4.0ghz (non-oc) / RAM 32gb 1600mhz / Windows 8.1 64bits / Blender 2.73a 64 bits official
Render time: 00:13.42 / Memory Peak: 1220.52M

Computer 3:

Imac late 2012 / CPU Intel Core i7 3770 @3.4ghz (non-oc) / RAM 32gb 1600mhz / OSX 10.10.2 / Blender 2.73a 64bits official
Render time: 00:08.49 / Memory Peak: 1220.52M

I would like to ask: What’s the f*** problem? I know that on Windows, CPU performances are the weakest, but I did never see a difference that big. From what I experienced, Windows should be around 20% slower when using the same CPU compare to OSX or Xubuntu.

Even when using BI, my comp with the 4.0ghz CPU is the fastest compare to the other Comps I have. You can say that’s normal, but when you know that Blender on Win runs 20% slower when using the CPU, you can doubt a little. And here, that’s definitely not 20% slower…

I hate to ask but could you do these again and get the amount of memory they used :frowning: BTW thanks for doing it on 3 machines and 3 operating systems :smiley:

I edited my previous post. Memory Peak at 1220.52M on both computers.

Thanks :smiley: :smiley:

i7-2600k O.C. @4.0ghz

Win 7 64bit

time: 00:13.10
peak mem: 1220.52M


Win 7 64bit
time: 00:15.80
peak mem: 1220.52M

Ubuntu 14.04
time: 00:08.30
peak mem: 1220.52M

Crazy difference…

FX 8350 4.0 Ghz
Ubuntu 14.04
Gooseberry branch

Time 00:07:77
Peak 1310.87M

CPU I7 5820k 4.1 (OC) GHZ

WIN 7 x64

Blender 2.73a

Time : 00:11.51
Peak Memory : 1220.52 MB

CPU i3-3120M 2.5 GHZ

WIN 8 x64

Blender 2.73a

Time : 00:29.03
Peak Memory : 1220.52 MB

Blender 2.73 Gooseberry Branch

Time : 00:26.96
Peak Memory : 1310.99 MB

i7 4790k Stock
Win 8.1 x64

These times are all cray cray we need someone (smarter than me) to look in to this lol

Opensuse 13.2/64
Intel i5 3770K
Blender 2.73a

Blender latest Master build, woot. :slight_smile:

Cheers, mib

Master uses a lot more memory :frowning:

Well thats interesting… ~28 seconds faster on your FX 8350 with a lower clock. i cri :frowning:

Time: 00:09.15
Peak: 1310.87 Mb

Blender v2.73.9
Computer spec: see signature :wink:

why are all these times sooo different lol

So I benched this scene in both Windows and Linux on the same machine…

CPU: FX-8350 4.0 GHz

Windows 7 Professional x64
Blender 2.73a
Time : 00:34.22
Peak Memory : 1220.52 MB

Ubuntu 14.04 x64
Blender 2.73a
Time : 00:08.85
Peak Memory : 1220.52 MB

Conclusion: the official build of 2.73a is significantly slower in Windows.

Recommendation: install Linux.