Vc - gcc

@@@ test0 - begin @@@
@@@ scalar loops use Vc::malloc<float, Vc::AlignOnVector>
@@@ array size = 2000
@@@ vectorization enabled
@@@ NO streaming stores
/10000 done.
scalar + : 770 cycles/repetition, 3.358e-07 seconds/repetition, 1x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector + : 481 cycles/repetition, 2.098e-07 seconds/repetition, 1.6x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar - : 768 cycles/repetition, 3.347e-07 seconds/repetition, 1x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector - : 418 cycles/repetition, 1.823e-07 seconds/repetition, 1.84x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar * : 768 cycles/repetition, 3.351e-07 seconds/repetition, 1x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector * : 417 cycles/repetition, 1.819e-07 seconds/repetition, 1.85x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar / : 2607 cycles/repetition, 1.136e-06 seconds/repetition, 0.296x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector / : 2510 cycles/repetition, 1.094e-06 seconds/repetition, 0.307x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar sqrt : 18665 cycles/repetition, 8.134e-06 seconds/repetition, 0.0413x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector sqrt : 2479 cycles/repetition, 1.081e-06 seconds/repetition, 0.311x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar log : 53051 cycles/repetition, 2.312e-05 seconds/repetition, 0.0145x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector log : 11354 cycles/repetition, 4.948e-06 seconds/repetition, 0.0679x speedup, 2.29 GHz, 10000 repetitions.
    #different results: 44/2000 maxreldiff=1.18e-07
/10000 done.
scalar pow : 316990 cycles/repetition, 0.0001381 seconds/repetition, 0.00243x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector pow : 23566 cycles/repetition, 1.027e-05 seconds/repetition, 0.0327x speedup, 2.29 GHz, 10000 repetitions.
    #different results: 391/2000 maxreldiff=2.39e-07
@@@ test0 - done @@@

real	0m1.897s
user	0m1.896s
sys	0m0.000s

boost::simd - gcc

@@@ test0 - begin @@@
@@@ array size = 2000
@@@ vectorization enabled
/10000 done.
scalar + : 4857 cycles/repetition, 2.117e-06 seconds/repetition, 1x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector + : 984 cycles/repetition, 4.29e-07 seconds/repetition, 4.93x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar - : 4778 cycles/repetition, 2.082e-06 seconds/repetition, 1.02x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector - : 959 cycles/repetition, 4.181e-07 seconds/repetition, 5.06x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar * : 4810 cycles/repetition, 2.096e-06 seconds/repetition, 1.01x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector * : 1000 cycles/repetition, 4.36e-07 seconds/repetition, 4.85x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar / : 10177 cycles/repetition, 4.435e-06 seconds/repetition, 0.477x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector / : 2660 cycles/repetition, 1.16e-06 seconds/repetition, 1.83x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar sqrt : 18501 cycles/repetition, 8.062e-06 seconds/repetition, 0.263x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector sqrt : 2572 cycles/repetition, 1.121e-06 seconds/repetition, 1.89x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
scalar log : 57332 cycles/repetition, 2.498e-05 seconds/repetition, 0.0847x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector nt2::log : 12456 cycles/repetition, 5.428e-06 seconds/repetition, 0.39x speedup, 2.29 GHz, 10000 repetitions.
    #different results: 70/2000 maxreldiff=1.17e-07
/10000 done.
scalar pow : 323627 cycles/repetition, 0.000141 seconds/repetition, 0.015x speedup, 2.29 GHz, 10000 repetitions.
/10000 done.
vector nt2::pow : 39257 cycles/repetition, 1.711e-05 seconds/repetition, 0.124x speedup, 2.29 GHz, 10000 repetitions.
    #different results: 448/2000 maxreldiff=2.39e-07
@@@ test0 - done @@@

real	0m2.111s
user	0m2.110s
sys	0m0.000s