SNESMSRegister#

register a multistage scheme for SNESMS

Synopsis#

#include "petscsnes.h" 
PetscErrorCode SNESMSRegister(SNESMSType name, PetscInt nstages, PetscInt nregisters, PetscReal stability, const PetscReal gamma[], const PetscReal delta[], const PetscReal betasub[])

Logically Collective

Input Parameters#

  • name - identifier for method

  • nstages - number of stages

  • nregisters - number of registers used by low-storage implementation

  • stability - scaled stability region

  • gamma - coefficients, see Ketcheson’s paper

  • delta - coefficients, see Ketcheson’s paper

  • betasub - subdiagonal of Shu-Osher form

Notes#

The notation is described in Ketcheson (2010) Runge-Kutta methods with minimum storage implementations.

Many multistage schemes are of the form \( X_0 = X^{(n)} \) X_k = X_0 + \alpha_k * F(X_{k-1}), k = 1,\ldots,s $ X^{(n+1)} = X_s These methods can be registered with

   SNESMSRegister("name",s,1,stability,NULL,NULL,alpha);

See Also#

SNESMS

Level#

advanced

Location#

src/snes/impls/ms/ms.c

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Index of all SNES routines
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Index of all manual pages