petsc-3.7.3 2016-08-01
Report Typos and Errors

TSSetCostGradients

Sets the initial value of the gradients of the cost function w.r.t. initial conditions and w.r.t. the problem parameters for use by the TSAdjoint routines.

Synopsis

#include "petscts.h"  
PetscErrorCode  TSSetCostGradients(TS ts,PetscInt numcost,Vec *lambda,Vec *mu)
Logically Collective on TS and Vec

Input Parameters

ts - the TS context obtained from TSCreate()
lambda - gradients with respect to the initial condition variables, the dimension and parallel layout of these vectors is the same as the ODE solution vector
mu - gradients with respect to the parameters, the number of entries in these vectors is the same as the number of parameters

Notes: the entries in these vectors must be correctly initialized with the values lamda_i = df/dy|finaltime mu_i = df/dp|finaltime

Keywords

TS, timestep, set, sensitivity, initial conditions

Level:beginner
Location:
src/ts/interface/ts.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/ts/examples/tutorials/extchem.c.html
src/ts/examples/tutorials/ex16adj.c.html
src/ts/examples/tutorials/ex16opt_p.c.html
src/ts/examples/tutorials/ex16opt_ic.c.html
src/ts/examples/tutorials/ex20adj.c.html
src/ts/examples/tutorials/ex20opt_p.c.html
src/ts/examples/tutorials/ex20opt_ic.c.html