petsc-3.14.6 2021-03-30
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TSForwardSetSensitivities

 Sets the initial value of the trajectory sensitivities of solution w.r.t. the problem parameters and initial values.

Synopsis

#include "petscts.h"  
PetscErrorCode TSForwardSetSensitivities(TS ts,PetscInt nump,Mat Smat)
Logically Collective on TS

Input Parameters

ts - the TS context obtained from TSCreate()
nump - number of parameters
Smat - sensitivities with respect to the parameters, the number of entries in these vectors is the same as the number of parameters

Notes

Forward sensitivity is also called 'trajectory sensitivity' in some fields such as power systems. This function turns on a flag to trigger TSSolve() to compute forward sensitivities automatically. You must call this function before TSSolve(). The entries in the sensitivity matrix must be correctly initialized with the values S = dy/dp|startingtime.

See Also

TSForwardGetSensitivities(), TSForwardSetIntegralGradients(), TSForwardGetIntegralGradients(), TSForwardStep()

Level

beginner

Location

src/ts/interface/sensitivity/tssen.c

Examples

src/ts/tutorials/ex16fwd.c.html

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