slepc-3.5.2 2014-10-10
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Spectral Transformation - ST

The Spectral Transformation (ST) class encapsulates the functionality required for acceleration techniques based on the transformation of the spectrum. As explained in the SLEPc Users Manual, the eigensolvers implemented in EPS work by applying an operator to a set of vectors and this operator can adopt different forms. The ST object handles all the different possibilities in a uniform way, so that the solver can proceed without knowing which transformation has been selected.

The type of spectral transformation can be specified at run time (e.g., -st_type sinvert) as well as several parameters such as the value of the shift (e.g., -st_shift 1.5).

ST objects are always related to EPS objects. Users should not create a standalone ST object. ST options can also be set directly in application codes by first extracting the ST context from the EPS context via EPSGetST() and then directly calling the ST routines (e.g., STSetType() / STSetShift()).

Beginner - Basic usage
STCreate ST STView
STDestroy STSetFromOptions
STGetShift STType
Intermediate - Setting options for algorithms and data structures
STCayleyGetAntishift STGetOperationCounters STSetMatMode
STCayleySetAntishift STGetOperators STSetOperators
STGetKSP STGetType STSetType
STGetMatMode STMatMode
STGetNumMatrices STResetOperationCounters
Advanced - Setting more advanced options and customization
STAppendOptionsPrefix STRegisterAll STSetShift
STComputeExplicitOperator STRegister STSetUp
STGetMatStructure STReset STShellGetContext
STGetOptionsPrefix STSetKSP STSHELL
STPrecondGetMatForPC STSetMatStructure STShellSetContext
STPrecondSetMatForPC STSetOptionsPrefix
Developer - Interfaces intended primarily for library developers, not for typical applications programmers
STApply STInitializePackage STPostSolve
STApplyTranspose STMatGetLocalSize STPrecondGetKSPHasMat
STBackTransform STMatGetSize STPrecondSetKSPHasMat
STCheckNullSpace STMatGetVecs STSetBalanceMatrix
STFinalizePackage STMatMult STSetDefaultShift
STGetBalanceMatrix STMatMultTranspose STSetTransform
STGetBilinearForm STMatSetUp STShellSetApply
STGetTOperators STMatSolve STShellSetApplyTranspose
STGetTransform STMatSolveTranspose STShellSetBackTransform
No deprecated routines

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