[Beowulf] El Reg: AMD reveals potent parallel processing breakthrough

Ellis H. Wilson III ellis at cse.psu.edu
Fri May 3 10:32:07 PDT 2013

On 05/03/2013 01:29 PM, Geoffrey Jacobs wrote:
> On 05/02/2013 07:41 PM, Vincent Diepeveen wrote:
>> Also utter useless it is, as the GPU has what is it 200GB/s bandwidth,
>> going back to 6GB/s cache coherent gpu/cpu (just taking a number i've
>> seen more there get claimed
>> that the bandwidth was in OpenCL) you lose roughly factor 30+ so
>> using such features is total nuts.
> The vector unit (formerly the GPU) would still have the local caches,
> no? Also, the APUs these would be replacing already have physically
> unified access to the DDR3 memory pool, so there's no change in
> effective bandwidth. Some APUs would come with a GDDR5 memory pool, so
> memory bandwidth would be upgraded for the CPU.
> The big change is that the pools are not separately allocated.

Speaking of being utter[ly] useless...just wait for it...

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