Re: [Beowulf] The GPU power envelope (was difference between accelerators)

2013-03-15 Thread Mark Hahn
> I think what you've got here is basically the idea that "things that are > closer, consume less power and cost less because you don't have the > "interface cost". everyone loves wide, fast channels - they just don't want to pay for the power to drive them. there seems to be no problem creating

Re: [Beowulf] The GPU power envelope (was difference between accelerators)

2013-03-14 Thread Lux, Jim (337C)
I think what you've got here is basically the idea that "things that are closer, consume less power and cost less because you don't have the "interface cost". A FPU sitting on the bus with the integer ALU inside the chip has minimum overhead.. No going on and off chip and the associated level shif

[Beowulf] The GPU power envelope (was difference between accelerators)

2013-03-14 Thread Vincent Diepeveen
On Mar 12, 2013, at 5:45 AM, Mark Hahn wrote: > >>> I think HSA is potentially interesting for HPC, too. >>> I really expect >>> AMD and/or Intel to ship products this year that have a C/GPU chip >>> mounted on >>> the same interposer as some high-bandwidth ram. >> >> How can an integrated gpu o