confused Xeon 8core or 2x XEON 6core CPU - which one ist faster?

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mazoola
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Re: Xeon 8core or 2x XEON 6core CPU - which one ist faster?

Post by mazoola »

with the "Create photo with renderer" plugin the rendering uses smaller tiles, this means the processor load does not drop after each completed part of the pictures I have a time of 1:48min
That's really interesting. With my slow machine and XP, the "Create photo" plugin appears to render more slowly than the default renderer with larger buckets. Admittedly, it's been a while since I compared them, and my timing of the default renderer may have been a bit haphazard. Or it may be that in faster or multi-multicore machines, swapping buckets in and out of memory is more of a bottleneck than the actual processing.

For curiosity's sake, are you running it with or without hyperthreading?
rennmoehre
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Re: Xeon 8core or 2x XEON 6core CPU - which one ist faster?

Post by rennmoehre »

It runs with hyperthreading.

Is there a possibility to change the size of the tiles when rendering a videofile? It looks like that they are really large, because the second CPU is idling half of the time.
This could be a massive drop in time, if the tiles are smaller.
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hansmex
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Re: Xeon 8core or 2x XEON 6core CPU - which one ist faster?

Post by hansmex »

I'm using Ubuntu and have System Monitor open quite often. That program shows me that all cores are being used all of the time, regardless of the size of the tiles.

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rennmoehre
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Re: Xeon 8core or 2x XEON 6core CPU - which one ist faster?

Post by rennmoehre »

Okay, thanks. The benchmarks I have seen so far showed no real differences between Windows and Linux with sunflow rendering, but I think nobody has tested this with a 2 cpu setup. I'll check this.
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hansmex
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Re: Xeon 8core or 2x XEON 6core CPU - which one ist faster?

Post by hansmex »

My experience is with one four or six core processor.
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