TaoLineSearchSetOptionsPrefix

Sets the prefix used for searching for all TaoLineSearch options in the database.

Synopsis

#include "petsctaolinesearch.h" 
PetscErrorCode TaoLineSearchSetOptionsPrefix(TaoLineSearch ls, const char p[])

Logically Collective

Input Parameters

• ls - the TaoLineSearch context

• p - the prefix string to prepend to all ls option requests

Notes

A hyphen (-) must NOT be given at the beginning of the prefix name. The first character of all runtime options is AUTOMATICALLY the hyphen.

This is inherited from the Tao object so rarely needs to be set

For example, to distinguish between the runtime options for two different line searches, one could call

      TaoLineSearchSetOptionsPrefix(ls1,"sys1_")
      TaoLineSearchSetOptionsPrefix(ls2,"sys2_")

This would enable use of different options for each system, such as

      -sys1_tao_ls_type mt
      -sys2_tao_ls_type armijo

See Also

TAO: Optimization Solvers, Tao, TaoLineSearch, TaoLineSearchAppendOptionsPrefix(), TaoLineSearchGetOptionsPrefix()

Level

advanced

Location

src/tao/linesearch/interface/taolinesearch.c

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Index of all TaoLineSearch routines
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Index of all manual pages