On Friday 20 February 2009 14:12:19 ja...@njkfrudils.plus.com wrote: What happened to core-2 mul_basecase and sqr_basecase ? , no-wonder core-2 benchmarks are crap
> Running the k8/k10 asm code with no changes on the core2 machine sage we > get this > > popcount,hamdist no popcount instruction > > slowdowns--------- > add,sub are 0.50x > rshift1,lshift1 0.70x > k8 lshift,rshift 0.91x > addmul_1,submul_1 0.89x but faster for <20 limbs... > > speedups---------- > and,ior,xor are 1.13x > nand,nior,xnor,andn,iorn are 1.50x > com is 2.00x > divebyff 1.40x although not better until 12limbs > diveby3 2.30x > addadd,addsub 1.50x > sumdiff 1.26x > addlsh1 1.50x > sublsh1 1.40x > k10 lshift,rshift 1.18x > mul_1 1.04x > > for mul basecase we get > ./speed -c -r -s 1-40 mpn_jaytest mpn_mul_basecase > overhead 6.12 cycles, precision 10000 units of 3.75e-10 secs, CPU freq > 2666.76 MHz > mpn_jaytest mpn_mul_basecase > 1 #9.21 2.3531 > 2 #21.43 2.0070 > 3 #56.00 1.5234 > 4 #91.36 1.4960 > 5 #136.17 1.4320 > 6 #195.54 1.3769 > 7 #261.22 1.3718 > 8 #336.56 1.3482 > 9 #419.62 1.3441 > 10 #527.14 1.3054 > 11 #634.44 1.3105 > 12 #744.00 1.3172 > 13 #873.85 1.2931 > 14 #1024.55 1.1088 > 15 #1169.00 1.0873 > 16 #1328.89 1.0704 > 17 #1492.50 1.0672 > 18 #1710.00 1.0317 > 19 #1880.00 1.0488 > 20 #2112.00 1.0246 > 21 #2288.00 1.0385 > 22 #2547.50 1.0128 > 23 #2787.50 1.0063 > 24 #3012.50 1.0108 > 25 #3212.50 1.0241 > 26 3556.67 #0.9953 > 27 3836.67 #0.9939 > 28 4106.67 #0.9935 > 29 4370.00 #0.9908 > 30 4700.00 #0.9617 > 31 4996.67 #0.9973 > 32 5380.00 #0.9944 > 33 5685.00 #0.9727 > 34 6105.00 #0.9853 > 35 6375.00 #0.9906 > 36 6775.00 #0.9764 > 37 7540.00 #0.9151 > 38 7515.00 #0.9714 > 39 #7955.00 1.0578 > 40 #8750.00 1.0086 > > This is all with no tweeking on > cpu family : 6 > model : 29 > model name : Intel(R) Xeon(R) CPU X7460 @ 2.66GHz > stepping : 1 > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "mpir-devel" group. To post to this group, send email to mpir-devel@googlegroups.com To unsubscribe from this group, send email to mpir-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/mpir-devel?hl=en -~----------~----~----~----~------~----~------~--~---
