------- Additional Comments From belyshev at depni dot sinp dot msu dot ru
2004-12-22 23:40 -------
It seems that extra O(N) factor comes from high memory usage. For smaller N
(0..30) compiler behaves like O(2) and for larger (> 50) like O(2.5 .. 3).
gnuplot> fit [0:30] A*x**k+B "data" via A,k,B
[snip]
Final set of parameters Asymptotic Standard Error
======================= ==========================
A = 0.000465461 +/- 2.625e-05 (5.64%)
k = 1.90612 +/- 0.01652 (0.8667%)
B = 0.0328722 +/- 0.0007677 (2.335%)
gnuplot> fit [50:175] A*x**k+B "data" via A,k,B
[snip]
Final set of parameters Asymptotic Standard Error
======================= ==========================
A = 4.76329e-06 +/- 3.493e-07 (7.332%)
k = 3.0033 +/- 0.01405 (0.4678%)
B = 0.392746 +/- 0.02972 (7.567%)
For N=175 memory usage on my machine exceedes 600 MB
--
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2004-11-25 11:16:30 |2004-12-22 23:40:41
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18595
