Implementation notes: amd64, khazaddum, crypto_hashblocks/sha512

Computer: khazaddum
Architecture: amd64
CPU ID: GenuineIntel-000306a9-bfebfbff
SUPERCOP version: 20120928
Operation: crypto_hashblocks
Primitive: sha512

Time	Implementation	Compiler	Benchmark date	SUPERCOP version
16416	`inplace`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20121014	20120928
16420	`inplace`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20121014	20120928
16432	`inplace`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20121014	20120928
16448	`inplace`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20121014	20120928
16452	`inplace`	`gcc -funroll-loops -O -fomit-frame-pointer`	20121014	20120928
16468	`inplace`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20121014	20120928
16468	`inplace`	`gcc -march=nocona -O -fomit-frame-pointer`	20121014	20120928
16472	`inplace`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20121014	20120928
16472	`inplace`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20121014	20120928
16480	`inplace`	`gcc -m64 -march=corei7-avx -O -fomit-frame-pointer`	20121014	20120928
16484	`inplace`	`gcc -m64 -O -fomit-frame-pointer`	20121014	20120928
16484	`inplace`	`gcc -m64 -march=core-avx-i -O -fomit-frame-pointer`	20121014	20120928
16484	`inplace`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20121014	20120928
16484	`inplace`	`gcc -m64 -march=corei7 -O -fomit-frame-pointer`	20121014	20120928
16488	`inplace`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20121014	20120928
16492	`inplace`	`gcc -O -fomit-frame-pointer`	20121014	20120928
16496	`inplace`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20121014	20120928
16496	`inplace`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20121014	20120928
16516	`inplace`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20121014	20120928
16532	`inplace`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20121014	20120928
16540	`inplace`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20121014	20120928
16552	`inplace`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16560	`inplace`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20121014	20120928
16564	`inplace`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20121014	20120928
16572	`inplace`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20121014	20120928
16576	`inplace`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20121014	20120928
16580	`inplace`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16580	`inplace`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16580	`inplace`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16588	`inplace`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16600	`inplace`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20121014	20120928
16612	`inplace`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20121014	20120928
16624	`inplace`	`gcc -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16628	`inplace`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20121014	20120928
16640	`inplace`	`gcc -O2 -fomit-frame-pointer`	20121014	20120928
16640	`ref`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20121014	20120928
16640	`inplace`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16640	`inplace`	`gcc -m64 -march=corei7 -O2 -fomit-frame-pointer`	20121014	20120928
16640	`inplace`	`gcc -march=k8 -O -fomit-frame-pointer`	20121014	20120928
16644	`inplace`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20121014	20120928
16644	`ref`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20121014	20120928
16644	`ref`	`gcc -m64 -march=core-avx-i -O2 -fomit-frame-pointer`	20121014	20120928
16644	`ref`	`gcc -m64 -march=corei7-avx -O2 -fomit-frame-pointer`	20121014	20120928
16644	`inplace`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20121014	20120928
16648	`inplace`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16648	`inplace`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16648	`inplace`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20121014	20120928
16652	`inplace`	`gcc -m64 -O2 -fomit-frame-pointer`	20121014	20120928
16652	`inplace`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16656	`ref`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20121014	20120928
16656	`inplace`	`gcc -m64 -march=core-avx-i -O2 -fomit-frame-pointer`	20121014	20120928
16660	`inplace`	`gcc -m64 -march=corei7-avx -O2 -fomit-frame-pointer`	20121014	20120928
16660	`ref`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20121014	20120928
16664	`ref`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20121014	20120928
16668	`ref`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20121014	20120928
16668	`inplace`	`gcc -march=nocona -Os -fomit-frame-pointer`	20121014	20120928
16672	`ref`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20121014	20120928
16672	`ref`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16672	`inplace`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20121014	20120928
16676	`ref`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20121014	20120928
16680	`inplace`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20121014	20120928
16684	`ref`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16688	`ref`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16688	`inplace`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20121014	20120928
16692	`ref`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16692	`ref`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20121014	20120928
16696	`ref`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20121014	20120928
16696	`ref`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20121014	20120928
16696	`ref`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20121014	20120928
16696	`ref`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16696	`ref`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16696	`ref`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20121014	20120928
16696	`ref`	`gcc -march=k8 -Os -fomit-frame-pointer`	20121014	20120928
16700	`ref`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16704	`ref`	`gcc -O2 -fomit-frame-pointer`	20121014	20120928
16704	`ref`	`gcc -Os -fomit-frame-pointer`	20121014	20120928
16704	`ref`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20121014	20120928
16704	`ref`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20121014	20120928
16704	`ref`	`gcc -m64 -Os -fomit-frame-pointer`	20121014	20120928
16704	`ref`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16704	`ref`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20121014	20120928
16704	`inplace`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20121014	20120928
16704	`inplace`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20121014	20120928
16704	`ref`	`gcc -march=nocona -Os -fomit-frame-pointer`	20121014	20120928
16708	`ref`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20121014	20120928
16708	`ref`	`gcc -m64 -march=corei7 -O2 -fomit-frame-pointer`	20121014	20120928
16708	`ref`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20121014	20120928
16712	`ref`	`gcc -m64 -O2 -fomit-frame-pointer`	20121014	20120928
16712	`ref`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20121014	20120928
16712	`ref`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20121014	20120928
16716	`ref`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16716	`ref`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20121014	20120928
16720	`ref`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16720	`inplace`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20121014	20120928
16720	`ref`	`gcc -m64 -march=core-avx-i -Os -fomit-frame-pointer`	20121014	20120928
16720	`ref`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20121014	20120928
16720	`ref`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20121014	20120928
16720	`ref`	`gcc -m64 -march=corei7 -Os -fomit-frame-pointer`	20121014	20120928
16724	`ref`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20121014	20120928
16728	`inplace`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20121014	20120928
16728	`ref`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20121014	20120928
16732	`inplace`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20121014	20120928
16732	`ref`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20121014	20120928
16732	`inplace`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20121014	20120928
16732	`ref`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20121014	20120928
16732	`ref`	`gcc -march=barcelona -O -fomit-frame-pointer`	20121014	20120928
16736	`ref`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16736	`ref`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16740	`ref`	`gcc -m64 -march=corei7-avx -Os -fomit-frame-pointer`	20121014	20120928
16740	`ref`	`gcc -march=k8 -O -fomit-frame-pointer`	20121014	20120928
16744	`inplace`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16744	`inplace`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20121014	20120928
16752	`inplace`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20121014	20120928
16752	`ref`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20121014	20120928
16752	`ref`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20121014	20120928
16756	`inplace`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20121014	20120928
16756	`ref`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20121014	20120928
16756	`inplace`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16756	`inplace`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20121014	20120928
16760	`ref`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20121014	20120928
16760	`ref`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20121014	20120928
16764	`ref`	`gcc -O -fomit-frame-pointer`	20121014	20120928
16764	`ref`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20121014	20120928
16764	`ref`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20121014	20120928
16768	`ref`	`gcc -m64 -O -fomit-frame-pointer`	20121014	20120928
16768	`ref`	`gcc -m64 -march=core-avx-i -O -fomit-frame-pointer`	20121014	20120928
16768	`inplace`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20121014	20120928
16772	`inplace`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20121014	20120928
16776	`ref`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20121014	20120928
16780	`ref`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20121014	20120928
16780	`ref`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20121014	20120928
16784	`inplace`	`gcc -m64 -march=core-avx-i -Os -fomit-frame-pointer`	20121014	20120928
16784	`ref`	`gcc -m64 -march=corei7-avx -O -fomit-frame-pointer`	20121014	20120928
16788	`inplace`	`gcc -O3 -fomit-frame-pointer`	20121014	20120928
16788	`inplace`	`gcc -m64 -march=corei7-avx -O3 -fomit-frame-pointer`	20121014	20120928
16792	`inplace`	`gcc -m64 -march=core-avx-i -O3 -fomit-frame-pointer`	20121014	20120928
16792	`ref`	`gcc -m64 -march=corei7 -O -fomit-frame-pointer`	20121014	20120928
16796	`inplace`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20121014	20120928
16796	`inplace`	`gcc -m64 -march=corei7-avx -Os -fomit-frame-pointer`	20121014	20120928
16796	`inplace`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20121014	20120928
16796	`ref`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20121014	20120928
16800	`inplace`	`gcc -m64 -O3 -fomit-frame-pointer`	20121014	20120928
16800	`inplace`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20121014	20120928
16804	`inplace`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20121014	20120928
16808	`inplace`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20121014	20120928
16808	`inplace`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20121014	20120928
16812	`inplace`	`gcc -m64 -Os -fomit-frame-pointer`	20121014	20120928
16812	`inplace`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16816	`inplace`	`gcc -Os -fomit-frame-pointer`	20121014	20120928
16816	`ref`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20121014	20120928
16816	`inplace`	`gcc -m64 -march=corei7 -Os -fomit-frame-pointer`	20121014	20120928
16816	`inplace`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20121014	20120928
16816	`inplace`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16816	`inplace`	`gcc -march=k8 -Os -fomit-frame-pointer`	20121014	20120928
16820	`ref`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20121014	20120928
16820	`ref`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20121014	20120928
16820	`inplace`	`gcc -m64 -march=corei7 -O3 -fomit-frame-pointer`	20121014	20120928
16820	`ref`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20121014	20120928
16824	`ref`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20121014	20120928
16828	`inplace`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20121014	20120928
16828	`inplace`	`gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer`	20121014	20120928
16832	`inplace`	`gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer`	20121014	20120928
16832	`inplace`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20121014	20120928
16832	`ref`	`gcc -march=nocona -O -fomit-frame-pointer`	20121014	20120928
16836	`ref`	`gcc -funroll-loops -O -fomit-frame-pointer`	20121014	20120928
16848	`inplace`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20121014	20120928
16860	`ref`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16876	`ref`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20121014	20120928
16880	`inplace`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20121014	20120928
16884	`inplace`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20121014	20120928
16896	`inplace`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20121014	20120928
16904	`inplace`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20121014	20120928
16920	`inplace`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20121014	20120928
16956	`ref`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20121014	20120928
16960	`ref`	`gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer`	20121014	20120928
16964	`ref`	`gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer`	20121014	20120928
16964	`ref`	`gcc -m64 -march=corei7 -O3 -fomit-frame-pointer`	20121014	20120928
16968	`ref`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20121014	20120928
16972	`ref`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20121014	20120928
16972	`ref`	`gcc -m64 -march=corei7-avx -O3 -fomit-frame-pointer`	20121014	20120928
16976	`ref`	`gcc -m64 -march=core-avx-i -O3 -fomit-frame-pointer`	20121014	20120928
16988	`ref`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20121014	20120928
16988	`ref`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20121014	20120928
16992	`ref`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20121014	20120928
17012	`ref`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20121014	20120928
17012	`ref`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20121014	20120928
17024	`ref`	`gcc -O3 -fomit-frame-pointer`	20121014	20120928
17024	`ref`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20121014	20120928
17032	`ref`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20121014	20120928
17040	`ref`	`gcc -m64 -O3 -fomit-frame-pointer`	20121014	20120928
17340	`inplace`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20121014	20120928
17356	`inplace`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20121014	20120928
17376	`inplace`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20121014	20120928
17420	`inplace`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20121014	20120928
17436	`ref`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20121014	20120928
17472	`ref`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20121014	20120928
17528	`ref`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20121014	20120928
17540	`ref`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20121014	20120928
17540	`inplace`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20121014	20120928
17548	`inplace`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20121014	20120928
17552	`inplace`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20121014	20120928
17576	`inplace`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20121014	20120928
17584	`ref`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20121014	20120928
17588	`ref`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20121014	20120928
17592	`ref`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20121014	20120928
17600	`ref`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20121014	20120928
17604	`ref`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20121014	20120928
29552	`inplace`	`cc`	20121014	20120928
29564	`inplace`	`gcc`	20121014	20120928
29572	`inplace`	`gcc -funroll-loops`	20121014	20120928
38384	`ref`	`gcc`	20121014	20120928
38592	`ref`	`cc`	20121014	20120928
38604	`ref`	`gcc -funroll-loops`	20121014	20120928