biglittlesps said:
ethomaz said:
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Zappykins said:
I'm sorry if I came across that way. I recently learned about how the PS4 was designed how it could use 14 CPU's for graphics, which leaves 4 more for sound and other stuff. Sorry, if it came off as dis-railing or petty.
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That's not fixed... the dev can choose how to use all the 18 CUs... it can use all for graphics or 12 for graphics and 6 for GPGPU (not necessarry audio).
Cerny said that about this 14 CUs rumor.
Digital Foundry: Going back to GPU compute for a moment, I wouldn't call it a rumour - it was more than that. There was a recommendation - a suggestion? - for 14 cores [GPU compute units] allocated to visuals and four to GPU compute...
Mark Cerny: That comes from a leak and is not any form of formal evangelisation. The point is the hardware is intentionally not 100 per cent round. It has a little bit more ALU in it than it would if you were thinking strictly about graphics. As a result of that you have an opportunity, you could say an incentivisation, to use that ALU for GPGPU.
So if you are not using all the CUs for graphics you are incentived to use for GPGPU.
http://www.eurogamer.net/articles/digitalfoundry-face-to-face-with-mark-cerny
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So, PS4 GPU has 14CU's for Graphics as priority along with standard GPGPU uses and 4CU's are customized for more GPGPU(with more ALU) and can do Graphics as well. But, these 4CU's are does better General computing when used than Graphics so this can lead to better physics.
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Kinda sorta, it was designed the 14 pairs of CU's pair off with the CPU, which leaves an optional 4 left that the developers can use in different ways. Odd note: the Xbox One's GPU is also made with 14 CU's, but they only use 12 of them, because they calculated they might lose one or two because of chip yield. Intel has been doing that sorts of chip manufacturing style for years.
