John Carmack:You need a 3.68 Teraflop GPU to match PS4's GPU
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[QUOTE="ronvalencia"]
The current AMD GCN fully supports HSAIL (due to GCN's more flexible instruction set) and my posted 3rd party HSA app shows this case in practical terms.
A hint for you. For every CU, there's a seperate scalar processor with it's own register storage and cache. DX doesn't directly expose CU's scalar processor.
tormentos
Again HSA will not work on current setups like HSA will on PS4 period you loss.
I quote AMD say so full HSA requires hUMA good luck getting that on current systems.
PowerPoint Slide for AMD Radeon HD 7xx0 GCN.
http://www.brightsideofnews.com/news/2011/11/30/radeon-hd-7000-revealed-amd-to-mix-gcn-with-vliw4--vliw5-architectures.aspx
You lose.
PS; Address Translation Services (ATS) and Page Request Interface (PRI) extension is defined by PCI-SIG PCIe standards.
[QUOTE="tormentos"]
[QUOTE="ronvalencia"]
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The current AMD GCN fully supports HSAIL (due to GCN's more flexible instruction set) and my posted 3rd party HSA app shows this case in practical terms.
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A hint for you. For every CU, there's a seperate scalar processor with it's own register storage and cache. DX doesn't directly expose CU's scalar processor.
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ronvalencia
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Again HSA will not work on current setups like HSA will on PS4 period you loss.
I quote AMD say so full HSA requires hUMA good luck getting that on current systems.
Â
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PowerPoint Slide for AMD Radeon HD 7xx0 GCN.
http://www.brightsideofnews.com/news/2011/11/30/radeon-hd-7000-revealed-amd-to-mix-gcn-with-vliw4--vliw5-architectures.aspx
You lose.
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You do realize they are talking about the GPU not the entire video card. GCN supports this feature but its virtualized over PCI-E so developers can use it, but it still has to copy memory over PCI-e for the chip thats using memory not on it's own bus?This type of technology has been around for a very long time, AGP video cards had hypertransport but calling back to main memory takes a large hit in performance. A unified address space isn't the same thing as HSA which is a uniffied memory architecture.
There are two parts to HSA, one is the software stack which almost any can probably implement, its not exclusive to PCs. HSA is basically an iterpreter that converts machine code into some sort of specific chip call, so you don't have to worry about loading a DSP or GPU directly, the HSA hides those things for you. It really has nothing to do with avoiding a copy process, since DMA/IOMMU has been widely available for quite some time just for that reason on video cards.
Secondly the real benefit of the actual hardware comes with APU's where they intend to share the memory bus. Dynamically shifting workloads and pointers basically has no overhead since both chips can read directly from the memory space and theres no dispatch overhead sending instructions to the GPU.
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