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processors

Discuss graphics hardware, computer hardware, and input/output devices to use with TouchDesigner

processors

Postby trotsaert » Tue Jun 07, 2016 4:00 pm

So is there a bennifit to going to a xenon processor over a i7 or vise versa. and is it worth having multiple processors onboard
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Re: processors

Postby raganmd » Tue Jun 07, 2016 7:04 pm

The answer, as you might have suspected as with all things Touch, is that it depends.

Touch is largely single threaded. Most CHOPs, SOPs, and DATs, run on the main thread. The movie file in TOP, however, is multi-threaded which will spread out video decoding across cores. If you're lots of video playing, swapping, and the like then the answer is yes - multiple cores are better for performance.

If, on the other hand, you're largely focused on live rendering then having lots of extra cores doesn't give you a significant performance boost. Instead, it would be better to have fewer cores that are faster - since this will benefit CHOP, SOP, and DAT operations.

TOP operations are mostly GLSL warpped in a nice UI element. This both means that they're fast, and most importantly that they happen on the GPU. Operations on the Geo COMP also happen on the GPU.

Chances are, you want to do a bit of both. In which case, a multi core machine is better - but it's important to know how the load is distributed across processes in your project.
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Re: processors

Postby trotsaert » Tue Jun 07, 2016 7:26 pm

Is there a way to see how the project is running and how many threads each op is eating up
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Re: processors

Postby raganmd » Tue Jun 07, 2016 7:43 pm

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Re: processors

Postby raganmd » Tue Jun 07, 2016 7:51 pm

For fast UI debugging, take a look at Anton's killer cookbar application

http://derivative.ca/Forum/viewtopic.php?f=22&t=8598
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Re: processors

Postby elburz » Wed Jun 15, 2016 2:55 am

I almost always opt for faster and fewer cores. For most workloads you get more bang for buck, and if you're using HAP codec the CPU drain isn't incredibly large on movie files.
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Re: processors

Postby mbratove » Thu Oct 05, 2017 3:08 am

Hello, do you reccomend using a AMD A10 6800k 4,4 Ghz?
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Re: processors

Postby ben » Thu Oct 26, 2017 2:55 am

mbratove wrote:Hello, do you reccomend using a AMD A10 6800k 4,4 Ghz?


A quick search on that processor reveals it is a very budget processor, unable to keep up with i7 CPUs from many years ago. So I would say No, not recommended.

https://www.cpubenchmark.net/cpu.php?cp ... -6800K+APU
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Re: processors

Postby elburz » Sun Oct 29, 2017 5:22 am

In most situations still, lower cores with faster clock speeds are preferred (4-core 4ghz > 8-core 2.3ghz), which makes the i7 gaming chips usually the ones we go with UNLESS we're doing multi-gpu setups in a single machine then we opt for Xeons.
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Re: processors

Postby mbratove » Fri Nov 03, 2017 2:13 pm

Thanks a lot for the opinion! I've purchased a Xeon 1620 in the end
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