petsc-3.5.4 2015-05-23
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Newton based nonlinear solver that uses a trust region

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The basic algorithm is taken from "The Minpack Project", by More', Sorensen, Garbow, Hillstrom, pages 88-111 of "Sources and Development of Mathematical Software", Wayne Cowell, editor.

This is intended as a model implementation, since it does not necessarily have many of the bells and whistles of other implementations.

See Also

SNESCreate(), SNES, SNESSetType(), SNESNEWTONLS, SNESSetTrustRegionTolerance()

Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages

-snes_trtol <tol> Trust region tolerance- . -snes_tr_mu <mu>
-snes_tr_eta <eta>- . -snes_tr_sigma <sigma>
-snes_tr_delta0 <delta0>- . -snes_tr_delta1 <delta1>
-snes_tr_delta2 <delta2>- - -snes_tr_delta3 <delta3>