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Forums - Microsoft Discussion - Hot Chips: Xbone Silicon (5b transistors, 363mm2, 8GB Flash, 1.31TFlops, 204GB/s peak BW)

ethomaz on 26 August 2013

MB1025 said:

But of course we don't know if that person is right. Since someone already said he was wrong.

Nobody said that.

+ CSM is shared memory between CPU cores.
+ HSA is the same but between CPU cores and GPU.
+ hUMA is a shared memory between CPU and GPU without need to make copy to use the same memory.



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MB1025 on 26 August 2013
ethomaz said:

MB1025 said:

But of course we don't know if that person is right. Since someone already said he was wrong.

Nobody said that.

http://www.neogaf.com/forum/showpost.php?p=78401757&postcount=88

You are confused. The onion bus is low latency bus for cpu making calls to and from memory. Huma allows the gpu to read from memory written by the cpu and vice versa w/o bus transfers. Xbox looks to have a huma like system for shared memory space by gpu/cpu.



ethomaz on 26 August 2013

MB1025 said:

http://www.neogaf.com/forum/showpost.php?p=78401757&postcount=88

You are confused. The onion bus is low latency bus for cpu making calls to and from memory. Huma allows the gpu to read from memory written by the cpu and vice versa w/o bus transfers. Xbox looks to have a huma like system for shared memory space by gpu/cpu.

The quote I made was not that... this one is about the PS4 onion bus lol



NobleTeam360 on 26 August 2013

Not sure if any of this really matters to a consumer? What do transistors do anyway?



ethomaz on 26 August 2013

High-speed CPU · GPU / memory connection of R / W of, 4x256-bit 264GB / s DDR3 4 channel, GPU, the GPU memory.



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ethomaz on 26 August 2013

This pic is better?

Even my cell take better pictures lol



disolitude on 26 August 2013
Lafiel said:
disolitude said:
ethomaz said:

Interesting... the PS4 GPU is a DX 11.2+ compatible... the Xbone uses a 11.1+ compatible.

PS4 can use DX11.9000 if it wants... but DX 11.2 is exclusive to microsofts platforms. 

Xbox One on the other hand should have it...

http://www.extremetech.com/gaming/160076-directx-11-2-will-be-a-windows-8-1-and-xbox-one-exclusive-microsoft-dangles-the-upgrade-carrot

this isn't about the Dx version used, it's about the feature set of the hardware, as Sony ofcourse uses it's own API (Dx might be available for less ambitious Devs though for easier multi plat development)

Gotcha. Yah fair enough... 

Curious why isn't this being covered by tech sites? Can;t find the info anywhere...



ethomaz on 26 August 2013

disolitude said:

Gotcha. Yah fair enough...

Curious why isn't this being covered by tech sites? Can;t find the info anywhere...

It is closed door... twitter is the right place to get small piece of info.



Wright on 26 August 2013

Ethomaz, I need explanation. I can't understand anything of this.



MB1025 on 26 August 2013
ethomaz said:

MB1025 said:

http://www.neogaf.com/forum/showpost.php?p=78401757&postcount=88

You are confused. The onion bus is low latency bus for cpu making calls to and from memory. Huma allows the gpu to read from memory written by the cpu and vice versa w/o bus transfers. Xbox looks to have a huma like system for shared memory space by gpu/cpu.

The quote I made was not that... this one is about the PS4 onion bus lol

http://www.neogaf.com/forum/showpost.php?p=78403725&postcount=104

My understanding of hUMA is it both gives coherency to CPU/GPU acess of shared memory pool but also removes software defined partition to the memory space so both gpu and cpu can access all portions of the shared main memory space.

Onion looks to offer the GPU acess to information in the CPU l2 cache, which I misstated, but that doesnt seem to me what hUMA does.

 

What I posted before this was a direct response your post got on GAF. So how does it not have to dow ith each other. What I posted above was another clarification from the same poster. You nor I have any idea what this is yet you are just posting things from GAF without clarification and then trying to play off that. Then  you tell people they are wrong because your post you posted from GAF says oher wise.