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Re: Random timing results with 'fsolve'
From: |
Søren Hauberg |
Subject: |
Re: Random timing results with 'fsolve' |
Date: |
Wed, 12 Oct 2011 16:05:55 +0200 |
ons, 12 10 2011 kl. 16:02 +0200, skrev Martin Helm:
> Am Mittwoch, den 12.10.2011, 15:41 +0200 schrieb Søren Hauberg:
> > Hi All
> >
> > I am currently using 'fsolve' to solve a non-linear set of equations,
> > for which it works great. However, when I try to determine the running
> > time of the algorithm I get rather different results. I tried
> >
> > for idx = 1:10
> > tic, [a1, b1] = fsolve (g, x, struct ("Jacobian", "off")); tid (idx)
> > = toc;
> > endfor
> >
> > i.e. run the solver ten times with the same input and store running
> > times. After this I see
> >
> > octave:313> max (tid_off) / min (tid_off)
> > ans = 4.2706
> >
> > Does anybody know why I see so large differences in the timing results?
> >
> > Søren
> >
> You check the "real" time it takes, if something runs in the background
> this will interfere with your time measurement.
>
> Do you get the same randomness when you are using cputime instead?
Good point. I just tried cputime instead and I get the same
randomness :-(
Søren
- Re: Random timing results with 'fsolve', (continued)
- Re: Random timing results with 'fsolve', bpabbott, 2011/10/12
- Re: Random timing results with 'fsolve', Søren Hauberg, 2011/10/12
- Re: Random timing results with 'fsolve', bpabbott, 2011/10/12
- Re: Random timing results with 'fsolve', Søren Hauberg, 2011/10/12
- Re: Random timing results with 'fsolve', Olaf Till, 2011/10/12
- Re: Random timing results with 'fsolve', Søren Hauberg, 2011/10/12
- Re: Random timing results with 'fsolve', Olaf Till, 2011/10/12
- Re: Random timing results with 'fsolve', Sergei Steshenko, 2011/10/12
- Re: Random timing results with 'fsolve', Francesco Potortì, 2011/10/12
Re: Random timing results with 'fsolve', Martin Helm, 2011/10/12
- Re: Random timing results with 'fsolve',
Søren Hauberg <=