Estimated computing time
An estimation of the computation time will be displayed. The
estimation formula is the following one:
Ttotal=N(Tmet-FT1prob+FT2prob)
where N is the estimated number of steps, Tmet is the
method time reported in the method properties panel (one step of
the method applied to the test equation of dimension one), F is
the number of ODE right-side evaluations, T1prob is the
time of one evaluation of the right side of the test equation used
for estimate Tmet and T2prob is the time of one evaluation
of the right side of the current ODEs.
Note that the Tmet, T1prob and T2prob are
computed as medium values for a fixed large number of method steps,
respectively function evaluations.
Numerical tests have been shown that this estimated value is very close
to the practical one. Note also that this values can be correct
only in the case of a constant stepsize method which use only
sequential computations. Another remark is that the above estimated
time is computed in the condition that no intermediate values will
be displayed on the screen. Therefore, an extra time will be added
when the computation is processed. This extra time can be significant
if Ttotal is under one hundred seconds (in the case of small
system of equations or explicit methods).
Example for the method DIRK4 applied to the system B1.