MatLMVMSymBroydenScaleType#

Rescaling type for the initial Hessian of a symmetric Broyden matrix.

Synopsis#

typedef enum {
  MAT_LMVM_SYMBROYDEN_SCALE_NONE     = 0,
  MAT_LMVM_SYMBROYDEN_SCALE_SCALAR   = 1,
  MAT_LMVM_SYMBROYDEN_SCALE_DIAGONAL = 2,
  MAT_LMVM_SYMBROYDEN_SCALE_USER     = 3,
  MAT_LMVM_SYMBROYDEN_SCALE_DECIDE   = 4
} MatLMVMSymBroydenScaleType;

Values#

• MAT_LMVM_SYMBROYDEN_SCALE_NONE - no rescaling

• MAT_LMVM_SYMBROYDEN_SCALE_SCALAR - scalar rescaling

• MAT_LMVM_SYMBROYDEN_SCALE_DIAGONAL - diagonal rescaling

• MAT_LMVM_SYMBROYDEN_SCALE_USER - same as MAT_LMVM_SYMBROYDN_SCALE_NONE

• MAT_LMVM_SYMBROYDEN_SCALE_DECIDE - let PETSc decide rescaling

See Also#

Matrices, MatLMVM, MatLMVMSymBroydenSetScaleType()

Level#

intermediate

Location#

include/petscksp.h

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