CPU Performance: Rendering Tests

Rendering is often a key target for processor workloads, lending itself to a professional environment. It comes in different formats as well, from 3D rendering through rasterization, such as games, or by ray tracing, and invokes the ability of the software to manage meshes, textures, collisions, aliasing, physics (in animations), and discarding unnecessary work. Most renderers offer CPU code paths, while a few use GPUs and select environments use FPGAs or dedicated ASICs. For big studios however, CPUs are still the hardware of choice.

All of our benchmark results can also be found in our benchmark engine, Bench.

Blender 2.79b: 3D Creation Suite

A high profile rendering tool, Blender is open-source allowing for massive amounts of configurability, and is used by a number of high-profile animation studios worldwide. The organization recently released a Blender benchmark package, a couple of weeks after we had narrowed our Blender test for our new suite, however their test can take over an hour. For our results, we run one of the sub-tests in that suite through the command line - a standard ‘bmw27’ scene in CPU only mode, and measure the time to complete the render.

Blender can be downloaded at https://www.blender.org/download/

Blender 2.79b bmw27_cpu Benchmark

Blender can take advantage of more cores, and whule the frequency of the 9990XE helps compared to the 7940X, it isn't enough to overtake 18-core hardware.

LuxMark v3.1: LuxRender via Different Code Paths

As stated at the top, there are many different ways to process rendering data: CPU, GPU, Accelerator, and others. On top of that, there are many frameworks and APIs in which to program, depending on how the software will be used. LuxMark, a benchmark developed using the LuxRender engine, offers several different scenes and APIs.


Taken from the Linux Version of LuxMark

In our test, we run the simple ‘Ball’ scene on both the C++ and OpenCL code paths, but in CPU mode. This scene starts with a rough render and slowly improves the quality over two minutes, giving a final result in what is essentially an average ‘kilorays per second’.

LuxMark v3.1 C++

We see a slight regression in performance here compared to the 7940X, which is interesting. I wonder if that 2.4 GHz fixed mesh is a limiting factor.

POV-Ray 3.7.1: Ray Tracing

The Persistence of Vision ray tracing engine is another well-known benchmarking tool, which was in a state of relative hibernation until AMD released its Zen processors, to which suddenly both Intel and AMD were submitting code to the main branch of the open source project. For our test, we use the built-in benchmark for all-cores, called from the command line.

POV-Ray can be downloaded from http://www.povray.org/

POV-Ray 3.7.1 Benchmark

Core i9-9990XE: The Compilation Champion CPU Performance: Encoding Tests
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  • Rοb - Friday, November 1, 2019 - link

    "... These companies not only pay through the nose for the hardware, but also pay experts and specialists to tune those systems for low latency. That means tweaking the memory, overclocking the processor ...".

    Financial trading is often done on the Network Card, see NextPlatform's article "Hypercalers Lead The Way To The Future With SmartNICs" or Wikipedia's "Reducing latency in the order chain".

    When the network card has received a bit of the packet it's starts reviewing which decisions it is able to make based on a partial packet, further narrowing down it's options as more data is received. If it's lucky it can send an order before the packet is completely received - if it can't it calculates if it's worth bailing out or running late with the others.

    The CPUs on HFT machines have fewer CPU cores that can be overclocked since they only need to convert orders to the FPGA. Trading is so fast they implemented 'speed bumps'.:

    "The IEX speed bump—or trading slowdown—is 350 microseconds, which the SEC ruled was within the "immediately visible" parameter.".
  • DillholeMcRib - Monday, November 4, 2019 - link

    I dunno, considering my 3900x is being cooled by a 240mm AIO and at boost barely goes over 105W and yet gets up to a toasty 78C I am pretty sure I don't want to even imagine that damn cooling rig it would take to keep Intel's 200W+ monster cool under boost. I don't have that much need or interest in such a thing, and if anyone else does I sure hope you live in a climate that lets you pull in -10C air into your case.
  • WaltC - Wednesday, November 6, 2019 - link

    Be kind of fun to test this placeholder from Intel with air cooling pitted against air-cooled AMD competition. Yawn...poor Intel, it's going to be a lot of last gasping from them until they put Ryzens and TR's and EPYCs under X-ray to figure out some aspects of manufacturing a modern CPU...;) I'm sure it's all been very instructive for them.
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