“Sandy Bridge” と Intel CPU の行方 - 知的システムデザイン研究室

113 2010 04 “Sandy Bridge” Intel CPU Hiroaki YAMAGUCHI, Hisao IMAMIYA1 CPU CPU Intel CPU 15 20 2002 50 Intel x86 CPU CPU Intel AVX SandyBridge CPU 2011Intel CPU Sandy Bridge 2 CPU 2.1 CPU 2002 CPU 50 2002 CPU 15 20 Fig.1 CPUFig.1 CPU ( 1) )Fig.1 ILP(Instruction-Level Parallelism) ILP ILP PC CPU CPU CPU 2.2 CPU Intel ILP 1 1 Intel AVX(IntelAdvanced Vector Extensions) Intel AVX CPU SandyBridge 3 Sandy Bridge3.1 Sandy Bridge Sandy Bridge 2011 CPU IntelAVX x86 32nm Sandy Bridge CPU PC Sandy Bridge H2 PC Sandy Bridge B2 Sandy BridgeH2 CPU 4 GPU 3D SandyBridge B2 GPU CPU 8 3.2 AVX AVX 1 1 256 128 256 1 x86 2 8 Fig.2 1

Fig.2 ( 2) )Fig.4VEX ( 3) )3.3 34 x86 2 AVX 3 4 A+B C Fig.3 Fig.3 ()Fig.3 2 2A C C+B C 23 3 A+B C 1 3.4 3.4.1 x86 x86 1 CPU VEX VEX x86 1 Sandy Bridge 2 2 3 3 1000 4 3.5 3.5.1 TDP(Thermal Design Power) CPUSandy Bridge PCU(Power Control Unit) 3.5.2 CPU CPU CPU TDP CPU Fig.5 3.4.2 VEX AVX 3 4 VEX Fig.4 Fig.4 VEX VEX 1 2 Fig.5 ( 3) )TDP 2

CPU 3.5.3 CPU 35 Fig.6 Fig.6 ( 3) )Fig.6 20 3.5.4 CPU Fig.7 Fig.7 ( 3) )4 Intel CPUIntel Intel AVX FusedMultiply Add 1 2012 Sandy Bridge Ivy Bridge 22nm 18 22nm CPU 50 5 Intel CPU 21 1 CPU Sandy Bridge Intel AVX AVX CPU Power Wall 50AVX FMA1) Weekly x86 Intel http://pc.watch.impress.co.jp/docs/2008/0407/kaigai434.htm.2) Weekly intel CPU Sandy Bridge GPU http://pc.watch.impress.co.jp/docs/column/kaigai/20100412 360173.html.3) Weekly http://pc.watch.impress.co.jp/docs/2007/1217/kaigai408.htm. TDP 1 30 3