Main: nterms=200000000 nthreads=1
Main: now waiting for othrer threads...
thread THREAD 1 started: a=1 b=200000001
thread THREAD 1 done: partial sum = 19.6910435919144
Main: total sum = 19.6910435919144
real 4.71
user 4.66
sys 0.04
Main: nterms=200000000 nthreads=2
Main: now waiting for othrer threads...
thread THREAD 1 started: a=1 b=100000001
thread THREAD 2 started: a=100000001 b=200000001
thread THREAD 2 done: partial sum = 0.693147178059741
thread THREAD 1 done: partial sum = 18.9978964138526
Main: total sum = 19.6910435919123
real 2.78
user 5.15
sys 0.06
Main: nterms=200000000 nthreads=3
Main: now waiting for othrer threads...
thread THREAD 1 started: a=1 b=66666667
thread THREAD 2 started: a=66666667 b=133333334
thread THREAD 3 started: a=133333334 b=200000001
thread THREAD 3 done: partial sum = 0.405465109358139
thread THREAD 2 done: partial sum = 0.693147184310161
thread THREAD 1 done: partial sum = 18.5924312982437
Main: total sum = 19.691043591912
real 1.95
user 4.97
sys 0.05
Main: nterms=200000000 nthreads=4
Main: now waiting for othrer threads...
thread THREAD 4 started: a=150000001 b=200000001
thread THREAD 3 started: a=100000001 b=150000001
thread THREAD 1 started: a=1 b=50000001
thread THREAD 2 started: a=50000001 b=100000001
thread THREAD 2 done: partial sum = 0.693147175559714
thread THREAD 4 done: partial sum = 0.287682071618549
thread THREAD 1 done: partial sum = 18.3047492382933
thread THREAD 3 done: partial sum = 0.405465106441426
Main: total sum = 19.691043591913
real 1.63
user 5.30
sys 0.07