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Next: 8.5.3 Number of iterations
Up: 8.5 The line search
Previous: 8.5.1 General features
Contents
- Online version
Every call to simul refers to an execution of the
forward and adjoint model.
Several iterations of optimization may thus be performed within
a single run of the main program (lsopt_top).
The following cases may occur:
- cold start only (no optimization)
- cold start, followed by one or several iterations of optimization
- warm start from previous cold start with one or several iterations
- warm start from previous warm start with one or several iterations
- Offline version
Every call to simul refers to a read procedure which
reads the result of a forward and adjoint run
Therefore, only one call to simul is allowed,
itmax = 0, for cold start
itmax = 1, for warm start
Also, at the end, x(i+1) needs to be computed and saved
to be available for the offline model and adjoint run
In order to achieve minimum difference between the online and offline code
xdiff(i+1) is stored to file at the end of an (offline) iteration,
but recomputed identically at the beginning of the next iteration.
Next: 8.5.3 Number of iterations
Up: 8.5 The line search
Previous: 8.5.1 General features
Contents
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Massachusetts Institute of Technology |
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