Xbox One (Durango) Technical hardware investigation

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imaxx said:
The hypervisor is... an OS?!?!
Click to expand...

no, Im guessing it would be something like

1. System OS (parent Partition) - probably runs dashboard etc.
2. Application OS - all the apps, including the snappable ones
3. Game OS - the single game

all 1,2,3 sits ontop of a HyperVisor ...

something like

US20120084517A1-20120405-D00003.png
 
liquidboy said:
no, Im guessing it would be something like

1. System OS (parent Partition) - probably runs dashboard etc.
2. Application OS - all the apps, including the snappable ones
3. Game OS - the single game

all 1,2,3 sits ontop of a HyperVisor ...

something like
Click to expand...

I'm quite sure MS said outright that it's "Windows OS", "Xbox (game) OS" and "Hypervisor OS" which controls the 2 and how they work together
 
I think it would add great value to the XBox One if you can plug in a keyboard and mouse and use it as an office computer. Hell, Office even runs on ARM (surface RT), so a 8 core x86 should run it pretty good as well.

I think this might happen at one point, due to the 3 OSes that Xbox one runs simultaneously
 
Well, I thought so too, but if it is true that the Xbox One has a fixed core allocation per OS as seemed to be suggested by Browser tests, then that isn't going to work so great. But perhaps they can do some dynamic reallocation of cores between the OSs.
 
Arwin said:
Well, I thought so too, but if it is true that the Xbox One has a fixed core allocation per OS as seemed to be suggested by Browser tests, then that isn't going to work so great. But perhaps they can do some dynamic reallocation of cores between the OSs.
Click to expand...

Maybe if it 'runs as a game'?

(They could market it as the ultimate student console.)
 
Arwin said:
Well, I thought so too, but if it is true that the Xbox One has a fixed core allocation per OS as seemed to be suggested by Browser tests, then that isn't going to work so great. But perhaps they can do some dynamic reallocation of cores between the OSs.
Click to expand...

IMHO they should have to ensure game devs know what they are coding for.

"The other camp" has one Jaguar core for the OS fixed, the other 7 are for games/apps.
 
Gipsel said:
On top of that, the two Jaguar modules include 2 MB of L2 each (4MB total). What sense could it make to add an additional 2.5MB L3 cache shared between the two modules? That's probably something else, not an L3. Would it make sense to have a faster storage for page tables? Appears to be a bit excessive compared to small TLB caches to me, but who knows?
Click to expand...


Seems like in the latest HSA overview talk given recently, they talk about "cache coherency domains" being solved in numerous ways, one of which is via "COMBINED L3"

slide-34-638.jpg


presentation slides here : http://www.slideshare.net/insideHPC/hsa-28761300
 
liquidboy said:
Seems like in the latest HSA overview talk given recently, they talk about "cache coherency domains" being solved in numerous ways, one of which is via "COMBINED L3"

slide-34-638.jpg


presentation slides here : http://www.slideshare.net/insideHPC/hsa-28761300
Click to expand...

That is very interesting.

The extra SRAM block and the large amount of attached logic is in a reasonable place (in the die layout) to be a combined L3.

Not saying that is the case, but it seems reasonably possible.

I wonder if the large block of logic to the right contains the 15 specialty (co)processors (also)?
 
onsidering that all runs on a virtual machine, and that there's x86 instructions compatibility, can the one enable at least original xbox compatibility?
 
fehu said:
onsidering that all runs on a virtual machine, and that there's x86 instructions compatibility, can the one enable at least original xbox compatibility?
Click to expand...
Theoretically, but don't hold your breath. They would still have to build another virtualization system for the GPU, and the development and test cost would be substantial.
 
bkilian said:
Theoretically, but don't hold your breath. They would still have to build another virtualization system for the GPU, and the development and test cost would be substantial.
Click to expand...

What's the benefit when developers can just crank out Xbox One specific versions for more money? See Tomb Raider: Definitive Edition for the first of many next-gen re-releases.
 
Now it is known right now the xbox one has a 10 percent gpu reservation, something where Microsoft themselves "Goosen" said that this will be available at a later date to devs. So if that is true, and I asked here and from what I gathered by some very intelligent guys that it is in fact possible. How that will be done is a mystery. What prompted this question what that recently Titanfall dev said they will not be using Kinect at all. This was peculiar to me because this is the perfect game for this. You could call your titanfall, etc, and other uses I could see being used, but then, I said maybe they are doing this because they know it is very important to hit 1080p 60fps on xbox one. so im thinking they might be the first devs to use this. How will this gpu reservation done..
 
Goosen didn't say the 10% will be available to devs later, he said it's possible that reservation may eventually be reduced to some degree.
 
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