-*- mode: org -*-

* iMac, 4x Core i5 , 12S, gcc 4.5.4:

$ nice make CPPOPTS="-DNO_LOCK -DNO_VIRTUAL_CALL" u

16, 100000000	0m7.864s	0m30.259s	0m0.035s
 8, 100000000	0m4.396s	0m17.034s	0m0.016s
 4, 100000000	0m2.729s	0m10.473s	0m0.011s
 2, 100000000	0m2.481s	0m4.929s	0m0.003s
 1, 100000000	0m2.461s	0m2.455s	0m0.002s

$ nice make CPPOPTS="-DNO_LOCK" u

16, 100000000	0m9.724s	0m37.455s	0m0.043s
 8, 100000000	0m5.559s	0m20.309s	0m0.048s
 4, 100000000	0m3.160s	0m12.213s	0m0.013s
 2, 100000000	0m2.872s	0m5.694s	0m0.004s
 1, 100000000	0m2.845s	0m2.838s	0m0.002s

$ nice make u

16, 100000000	1m3.745s	3m58.570s	0m0.351s
 8, 100000000	0m32.351s	1m55.740s	0m0.203s
 4, 100000000	0m16.852s	1m1.633s	0m0.092s
 2, 100000000	0m8.419s	0m16.699s	0m0.010s
 1, 100000000	0m4.214s	0m4.179s	0m0.005s

* Linux Slackware, 16x AMD Opteron, 12S, gcc 4.7.1

$ nice make CPPOPTS="-DNO_LOCK -DNO_VIRTUAL_CALL" u

16, 100000000	0m4.382s	1m9.896s	0m0.004s
 8, 100000000	0m4.374s	0m34.904s	0m0.002s
 4, 100000000	0m4.368s	0m17.445s	0m0.002s
 2, 100000000	0m4.366s	0m8.720s	0m0.003s
 1, 100000000	0m4.355s	0m4.351s	0m0.001s

$ nice make CPPOPTS="-DNO_LOCK" u

16, 100000000	0m5.415s	1m19.833s	0m0.005s
 8, 100000000	0m4.939s	0m39.438s	0m0.003s
 4, 100000000	0m4.936s	0m19.712s	0m0.001s
 2, 100000000	0m4.930s	0m9.847s	0m0.002s
 1, 100000000	0m4.921s	0m4.917s	0m0.002s

$ nice make u

16, 100000000	1m40.769s	24m17.198s	0m0.006s
 8, 100000000	0m51.702s	6m15.400s	0m0.003s
 4, 100000000	0m26.033s	1m37.651s	0m0.002s
 2, 100000000	0m13.534s	0m25.164s	0m0.003s
 1, 100000000	0m4.964s	0m4.961s	0m0.002s