xref: /petsc/src/ts/tutorials/power_grid/ex9opt.c (revision 3307d110e72ee4e6d2468971620073eb5ff93529)
1 
2 static char help[] = "Basic equation for generator stability analysis.\n";
3 
4 /*F
5 
6 \begin{eqnarray}
7                  \frac{d \theta}{dt} = \omega_b (\omega - \omega_s)
8                  \frac{2 H}{\omega_s}\frac{d \omega}{dt} & = & P_m - P_max \sin(\theta) -D(\omega - \omega_s)\\
9 \end{eqnarray}
10 
11   Ensemble of initial conditions
12    ./ex2 -ensemble -ts_monitor_draw_solution_phase -1,-3,3,3      -ts_adapt_dt_max .01  -ts_monitor -ts_type rosw -pc_type lu -ksp_type preonly
13 
14   Fault at .1 seconds
15    ./ex2           -ts_monitor_draw_solution_phase .42,.95,.6,1.05 -ts_adapt_dt_max .01  -ts_monitor -ts_type rosw -pc_type lu -ksp_type preonly
16 
17   Initial conditions same as when fault is ended
18    ./ex2 -u 0.496792,1.00932 -ts_monitor_draw_solution_phase .42,.95,.6,1.05  -ts_adapt_dt_max .01  -ts_monitor -ts_type rosw -pc_type lu -ksp_type preonly
19 
20 F*/
21 
22 /*
23    Include "petscts.h" so that we can use TS solvers.  Note that this
24    file automatically includes:
25      petscsys.h       - base PETSc routines   petscvec.h - vectors
26      petscmat.h - matrices
27      petscis.h     - index sets            petscksp.h - Krylov subspace methods
28      petscviewer.h - viewers               petscpc.h  - preconditioners
29      petscksp.h   - linear solvers
30 */
31 
32 #include <petsctao.h>
33 #include <petscts.h>
34 
35 typedef struct {
36   TS          ts;
37   PetscScalar H,D,omega_b,omega_s,Pmax,Pm,E,V,X,u_s,c;
38   PetscInt    beta;
39   PetscReal   tf,tcl,dt;
40 } AppCtx;
41 
42 PetscErrorCode FormFunction(Tao,Vec,PetscReal*,void*);
43 PetscErrorCode FormGradient(Tao,Vec,Vec,void*);
44 
45 /*
46      Defines the ODE passed to the ODE solver
47 */
48 static PetscErrorCode RHSFunction(TS ts,PetscReal t,Vec U,Vec F,AppCtx *ctx)
49 {
50   PetscScalar       *f,Pmax;
51   const PetscScalar *u;
52 
53   PetscFunctionBegin;
54   /*  The next three lines allow us to access the entries of the vectors directly */
55   PetscCall(VecGetArrayRead(U,&u));
56   PetscCall(VecGetArray(F,&f));
57   if ((t > ctx->tf) && (t < ctx->tcl)) Pmax = 0.0; /* A short-circuit on the generator terminal that drives the electrical power output (Pmax*sin(delta)) to 0 */
58   else Pmax = ctx->Pmax;
59 
60   f[0] = ctx->omega_b*(u[1] - ctx->omega_s);
61   f[1] = (-Pmax*PetscSinScalar(u[0]) - ctx->D*(u[1] - ctx->omega_s) + ctx->Pm)*ctx->omega_s/(2.0*ctx->H);
62 
63   PetscCall(VecRestoreArrayRead(U,&u));
64   PetscCall(VecRestoreArray(F,&f));
65   PetscFunctionReturn(0);
66 }
67 
68 /*
69      Defines the Jacobian of the ODE passed to the ODE solver. See TSSetIJacobian() for the meaning of a and the Jacobian.
70 */
71 static PetscErrorCode RHSJacobian(TS ts,PetscReal t,Vec U,Mat A,Mat B,AppCtx *ctx)
72 {
73   PetscInt          rowcol[] = {0,1};
74   PetscScalar       J[2][2],Pmax;
75   const PetscScalar *u;
76 
77   PetscFunctionBegin;
78   PetscCall(VecGetArrayRead(U,&u));
79   if ((t > ctx->tf) && (t < ctx->tcl)) Pmax = 0.0; /* A short-circuit on the generator terminal that drives the electrical power output (Pmax*sin(delta)) to 0 */
80   else Pmax = ctx->Pmax;
81 
82   J[0][0] = 0;                                  J[0][1] = ctx->omega_b;
83   J[1][1] = -ctx->D*ctx->omega_s/(2.0*ctx->H);  J[1][0] = -Pmax*PetscCosScalar(u[0])*ctx->omega_s/(2.0*ctx->H);
84 
85   PetscCall(MatSetValues(A,2,rowcol,2,rowcol,&J[0][0],INSERT_VALUES));
86   PetscCall(VecRestoreArrayRead(U,&u));
87 
88   PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
89   PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
90   if (A != B) {
91     PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY));
92     PetscCall(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY));
93   }
94   PetscFunctionReturn(0);
95 }
96 
97 static PetscErrorCode RHSJacobianP(TS ts,PetscReal t,Vec X,Mat A,void *ctx0)
98 {
99   PetscInt       row[] = {0,1},col[]={0};
100   PetscScalar    J[2][1];
101   AppCtx         *ctx=(AppCtx*)ctx0;
102 
103   PetscFunctionBeginUser;
104   J[0][0] = 0;
105   J[1][0] = ctx->omega_s/(2.0*ctx->H);
106   PetscCall(MatSetValues(A,2,row,1,col,&J[0][0],INSERT_VALUES));
107   PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
108   PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
109   PetscFunctionReturn(0);
110 }
111 
112 static PetscErrorCode CostIntegrand(TS ts,PetscReal t,Vec U,Vec R,AppCtx *ctx)
113 {
114   PetscScalar       *r;
115   const PetscScalar *u;
116 
117   PetscFunctionBegin;
118   PetscCall(VecGetArrayRead(U,&u));
119   PetscCall(VecGetArray(R,&r));
120   r[0] = ctx->c*PetscPowScalarInt(PetscMax(0., u[0]-ctx->u_s),ctx->beta);
121   PetscCall(VecRestoreArray(R,&r));
122   PetscCall(VecRestoreArrayRead(U,&u));
123   PetscFunctionReturn(0);
124 }
125 
126 static PetscErrorCode DRDUJacobianTranspose(TS ts,PetscReal t,Vec U,Mat DRDU,Mat B,AppCtx *ctx)
127 {
128   PetscScalar       ru[1];
129   const PetscScalar *u;
130   PetscInt          row[] = {0},col[] = {0};
131 
132   PetscFunctionBegin;
133   PetscCall(VecGetArrayRead(U,&u));
134   ru[0] = ctx->c*ctx->beta*PetscPowScalarInt(PetscMax(0., u[0]-ctx->u_s),ctx->beta-1);
135   PetscCall(VecRestoreArrayRead(U,&u));
136   PetscCall(MatSetValues(DRDU,1,row,1,col,ru,INSERT_VALUES));
137   PetscCall(MatAssemblyBegin(DRDU,MAT_FINAL_ASSEMBLY));
138   PetscCall(MatAssemblyEnd(DRDU,MAT_FINAL_ASSEMBLY));
139   PetscFunctionReturn(0);
140 }
141 
142 static PetscErrorCode DRDPJacobianTranspose(TS ts,PetscReal t,Vec U,Mat DRDP,AppCtx *ctx)
143 {
144   PetscFunctionBegin;
145   PetscCall(MatZeroEntries(DRDP));
146   PetscCall(MatAssemblyBegin(DRDP,MAT_FINAL_ASSEMBLY));
147   PetscCall(MatAssemblyEnd(DRDP,MAT_FINAL_ASSEMBLY));
148   PetscFunctionReturn(0);
149 }
150 
151 PetscErrorCode ComputeSensiP(Vec lambda,Vec mu,AppCtx *ctx)
152 {
153   PetscScalar       *y,sensip;
154   const PetscScalar *x;
155 
156   PetscFunctionBegin;
157   PetscCall(VecGetArrayRead(lambda,&x));
158   PetscCall(VecGetArray(mu,&y));
159   sensip = 1./PetscSqrtScalar(1.-(ctx->Pm/ctx->Pmax)*(ctx->Pm/ctx->Pmax))/ctx->Pmax*x[0]+y[0];
160   y[0] = sensip;
161   PetscCall(VecRestoreArray(mu,&y));
162   PetscCall(VecRestoreArrayRead(lambda,&x));
163   PetscFunctionReturn(0);
164 }
165 
166 int main(int argc,char **argv)
167 {
168   Vec            p;
169   PetscScalar    *x_ptr;
170   PetscMPIInt    size;
171   AppCtx         ctx;
172   Vec            lowerb,upperb;
173   Tao            tao;
174   KSP            ksp;
175   PC             pc;
176   Vec            U,lambda[1],mu[1];
177   Mat            A;             /* Jacobian matrix */
178   Mat            Jacp;          /* Jacobian matrix */
179   Mat            DRDU,DRDP;
180   PetscInt       n = 2;
181   TS             quadts;
182 
183   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
184      Initialize program
185      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
186   PetscCall(PetscInitialize(&argc,&argv,NULL,help));
187   PetscFunctionBeginUser;
188   PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size));
189   PetscCheck(size == 1,PETSC_COMM_WORLD,PETSC_ERR_WRONG_MPI_SIZE,"This is a uniprocessor example only!");
190 
191   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
192     Set runtime options
193     - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
194   PetscOptionsBegin(PETSC_COMM_WORLD,NULL,"Swing equation options","");
195   {
196     ctx.beta    = 2;
197     ctx.c       = PetscRealConstant(10000.0);
198     ctx.u_s     = PetscRealConstant(1.0);
199     ctx.omega_s = PetscRealConstant(1.0);
200     ctx.omega_b = PetscRealConstant(120.0)*PETSC_PI;
201     ctx.H       = PetscRealConstant(5.0);
202     PetscCall(PetscOptionsScalar("-Inertia","","",ctx.H,&ctx.H,NULL));
203     ctx.D       = PetscRealConstant(5.0);
204     PetscCall(PetscOptionsScalar("-D","","",ctx.D,&ctx.D,NULL));
205     ctx.E       = PetscRealConstant(1.1378);
206     ctx.V       = PetscRealConstant(1.0);
207     ctx.X       = PetscRealConstant(0.545);
208     ctx.Pmax    = ctx.E*ctx.V/ctx.X;
209     PetscCall(PetscOptionsScalar("-Pmax","","",ctx.Pmax,&ctx.Pmax,NULL));
210     ctx.Pm      = PetscRealConstant(1.0194);
211     PetscCall(PetscOptionsScalar("-Pm","","",ctx.Pm,&ctx.Pm,NULL));
212     ctx.tf      = PetscRealConstant(0.1);
213     ctx.tcl     = PetscRealConstant(0.2);
214     PetscCall(PetscOptionsReal("-tf","Time to start fault","",ctx.tf,&ctx.tf,NULL));
215     PetscCall(PetscOptionsReal("-tcl","Time to end fault","",ctx.tcl,&ctx.tcl,NULL));
216 
217   }
218   PetscOptionsEnd();
219 
220   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
221     Create necessary matrix and vectors
222     - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
223   PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
224   PetscCall(MatSetSizes(A,n,n,PETSC_DETERMINE,PETSC_DETERMINE));
225   PetscCall(MatSetType(A,MATDENSE));
226   PetscCall(MatSetFromOptions(A));
227   PetscCall(MatSetUp(A));
228 
229   PetscCall(MatCreateVecs(A,&U,NULL));
230 
231   PetscCall(MatCreate(PETSC_COMM_WORLD,&Jacp));
232   PetscCall(MatSetSizes(Jacp,PETSC_DECIDE,PETSC_DECIDE,2,1));
233   PetscCall(MatSetFromOptions(Jacp));
234   PetscCall(MatSetUp(Jacp));
235   PetscCall(MatCreateDense(PETSC_COMM_WORLD,PETSC_DECIDE,PETSC_DECIDE,1,1,NULL,&DRDP));
236   PetscCall(MatSetUp(DRDP));
237   PetscCall(MatCreateDense(PETSC_COMM_WORLD,PETSC_DECIDE,PETSC_DECIDE,1,2,NULL,&DRDU));
238   PetscCall(MatSetUp(DRDU));
239 
240   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
241      Create timestepping solver context
242      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
243   PetscCall(TSCreate(PETSC_COMM_WORLD,&ctx.ts));
244   PetscCall(TSSetProblemType(ctx.ts,TS_NONLINEAR));
245   PetscCall(TSSetEquationType(ctx.ts,TS_EQ_ODE_EXPLICIT)); /* less Jacobian evaluations when adjoint BEuler is used, otherwise no effect */
246   PetscCall(TSSetType(ctx.ts,TSRK));
247   PetscCall(TSSetRHSFunction(ctx.ts,NULL,(TSRHSFunction)RHSFunction,&ctx));
248   PetscCall(TSSetRHSJacobian(ctx.ts,A,A,(TSRHSJacobian)RHSJacobian,&ctx));
249   PetscCall(TSSetExactFinalTime(ctx.ts,TS_EXACTFINALTIME_MATCHSTEP));
250 
251   PetscCall(MatCreateVecs(A,&lambda[0],NULL));
252   PetscCall(MatCreateVecs(Jacp,&mu[0],NULL));
253   PetscCall(TSSetCostGradients(ctx.ts,1,lambda,mu));
254   PetscCall(TSSetRHSJacobianP(ctx.ts,Jacp,RHSJacobianP,&ctx));
255 
256   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
257      Set solver options
258    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
259   PetscCall(TSSetMaxTime(ctx.ts,PetscRealConstant(1.0)));
260   PetscCall(TSSetTimeStep(ctx.ts,PetscRealConstant(0.01)));
261   PetscCall(TSSetFromOptions(ctx.ts));
262 
263   PetscCall(TSGetTimeStep(ctx.ts,&ctx.dt)); /* save the stepsize */
264 
265   PetscCall(TSCreateQuadratureTS(ctx.ts,PETSC_TRUE,&quadts));
266   PetscCall(TSSetRHSFunction(quadts,NULL,(TSRHSFunction)CostIntegrand,&ctx));
267   PetscCall(TSSetRHSJacobian(quadts,DRDU,DRDU,(TSRHSJacobian)DRDUJacobianTranspose,&ctx));
268   PetscCall(TSSetRHSJacobianP(quadts,DRDP,(TSRHSJacobianP)DRDPJacobianTranspose,&ctx));
269   PetscCall(TSSetSolution(ctx.ts,U));
270 
271   /* Create TAO solver and set desired solution method */
272   PetscCall(TaoCreate(PETSC_COMM_WORLD,&tao));
273   PetscCall(TaoSetType(tao,TAOBLMVM));
274 
275   /*
276      Optimization starts
277   */
278   /* Set initial solution guess */
279   PetscCall(VecCreateSeq(PETSC_COMM_WORLD,1,&p));
280   PetscCall(VecGetArray(p,&x_ptr));
281   x_ptr[0]   = ctx.Pm;
282   PetscCall(VecRestoreArray(p,&x_ptr));
283 
284   PetscCall(TaoSetSolution(tao,p));
285   /* Set routine for function and gradient evaluation */
286   PetscCall(TaoSetObjective(tao,FormFunction,(void *)&ctx));
287   PetscCall(TaoSetGradient(tao,NULL,FormGradient,(void *)&ctx));
288 
289   /* Set bounds for the optimization */
290   PetscCall(VecDuplicate(p,&lowerb));
291   PetscCall(VecDuplicate(p,&upperb));
292   PetscCall(VecGetArray(lowerb,&x_ptr));
293   x_ptr[0] = 0.;
294   PetscCall(VecRestoreArray(lowerb,&x_ptr));
295   PetscCall(VecGetArray(upperb,&x_ptr));
296   x_ptr[0] = PetscRealConstant(1.1);
297   PetscCall(VecRestoreArray(upperb,&x_ptr));
298   PetscCall(TaoSetVariableBounds(tao,lowerb,upperb));
299 
300   /* Check for any TAO command line options */
301   PetscCall(TaoSetFromOptions(tao));
302   PetscCall(TaoGetKSP(tao,&ksp));
303   if (ksp) {
304     PetscCall(KSPGetPC(ksp,&pc));
305     PetscCall(PCSetType(pc,PCNONE));
306   }
307 
308   /* SOLVE THE APPLICATION */
309   PetscCall(TaoSolve(tao));
310 
311   PetscCall(VecView(p,PETSC_VIEWER_STDOUT_WORLD));
312   /* Free TAO data structures */
313   PetscCall(TaoDestroy(&tao));
314   PetscCall(VecDestroy(&p));
315   PetscCall(VecDestroy(&lowerb));
316   PetscCall(VecDestroy(&upperb));
317 
318   PetscCall(TSDestroy(&ctx.ts));
319   PetscCall(VecDestroy(&U));
320   PetscCall(MatDestroy(&A));
321   PetscCall(MatDestroy(&Jacp));
322   PetscCall(MatDestroy(&DRDU));
323   PetscCall(MatDestroy(&DRDP));
324   PetscCall(VecDestroy(&lambda[0]));
325   PetscCall(VecDestroy(&mu[0]));
326   PetscCall(PetscFinalize());
327   return 0;
328 }
329 
330 /* ------------------------------------------------------------------ */
331 /*
332    FormFunction - Evaluates the function
333 
334    Input Parameters:
335    tao - the Tao context
336    X   - the input vector
337    ptr - optional user-defined context, as set by TaoSetObjectiveAndGradient()
338 
339    Output Parameters:
340    f   - the newly evaluated function
341 */
342 PetscErrorCode FormFunction(Tao tao,Vec P,PetscReal *f,void *ctx0)
343 {
344   AppCtx         *ctx = (AppCtx*)ctx0;
345   TS             ts = ctx->ts;
346   Vec            U;             /* solution will be stored here */
347   PetscScalar    *u;
348   PetscScalar    *x_ptr;
349   Vec            q;
350 
351   PetscCall(VecGetArrayRead(P,(const PetscScalar**)&x_ptr));
352   ctx->Pm = x_ptr[0];
353   PetscCall(VecRestoreArrayRead(P,(const PetscScalar**)&x_ptr));
354 
355   /* reset time */
356   PetscCall(TSSetTime(ts,0.0));
357   /* reset step counter, this is critical for adjoint solver */
358   PetscCall(TSSetStepNumber(ts,0));
359   /* reset step size, the step size becomes negative after TSAdjointSolve */
360   PetscCall(TSSetTimeStep(ts,ctx->dt));
361   /* reinitialize the integral value */
362   PetscCall(TSGetCostIntegral(ts,&q));
363   PetscCall(VecSet(q,0.0));
364 
365   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
366      Set initial conditions
367    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
368   PetscCall(TSGetSolution(ts,&U));
369   PetscCall(VecGetArray(U,&u));
370   u[0] = PetscAsinScalar(ctx->Pm/ctx->Pmax);
371   u[1] = PetscRealConstant(1.0);
372   PetscCall(VecRestoreArray(U,&u));
373 
374   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
375      Solve nonlinear system
376      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
377   PetscCall(TSSolve(ts,U));
378   PetscCall(TSGetCostIntegral(ts,&q));
379   PetscCall(VecGetArray(q,&x_ptr));
380   *f   = -ctx->Pm + x_ptr[0];
381   PetscCall(VecRestoreArray(q,&x_ptr));
382   return 0;
383 }
384 
385 PetscErrorCode FormGradient(Tao tao,Vec P,Vec G,void *ctx0)
386 {
387   AppCtx         *ctx = (AppCtx*)ctx0;
388   TS             ts = ctx->ts;
389   Vec            U;             /* solution will be stored here */
390   PetscReal      ftime;
391   PetscInt       steps;
392   PetscScalar    *u;
393   PetscScalar    *x_ptr,*y_ptr;
394   Vec            *lambda,q,*mu;
395 
396   PetscCall(VecGetArrayRead(P,(const PetscScalar**)&x_ptr));
397   ctx->Pm = x_ptr[0];
398   PetscCall(VecRestoreArrayRead(P,(const PetscScalar**)&x_ptr));
399 
400   /* reset time */
401   PetscCall(TSSetTime(ts,0.0));
402   /* reset step counter, this is critical for adjoint solver */
403   PetscCall(TSSetStepNumber(ts,0));
404   /* reset step size, the step size becomes negative after TSAdjointSolve */
405   PetscCall(TSSetTimeStep(ts,ctx->dt));
406   /* reinitialize the integral value */
407   PetscCall(TSGetCostIntegral(ts,&q));
408   PetscCall(VecSet(q,0.0));
409 
410   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
411      Set initial conditions
412    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
413   PetscCall(TSGetSolution(ts,&U));
414   PetscCall(VecGetArray(U,&u));
415   u[0] = PetscAsinScalar(ctx->Pm/ctx->Pmax);
416   u[1] = PetscRealConstant(1.0);
417   PetscCall(VecRestoreArray(U,&u));
418 
419   /* Set up to save trajectory before TSSetFromOptions() so that TSTrajectory options can be captured */
420   PetscCall(TSSetSaveTrajectory(ts));
421   PetscCall(TSSetFromOptions(ts));
422 
423   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
424      Solve nonlinear system
425      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
426   PetscCall(TSSolve(ts,U));
427 
428   PetscCall(TSGetSolveTime(ts,&ftime));
429   PetscCall(TSGetStepNumber(ts,&steps));
430 
431   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
432      Adjoint model starts here
433      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
434   PetscCall(TSGetCostGradients(ts,NULL,&lambda,&mu));
435   /*   Set initial conditions for the adjoint integration */
436   PetscCall(VecGetArray(lambda[0],&y_ptr));
437   y_ptr[0] = 0.0; y_ptr[1] = 0.0;
438   PetscCall(VecRestoreArray(lambda[0],&y_ptr));
439   PetscCall(VecGetArray(mu[0],&x_ptr));
440   x_ptr[0] = PetscRealConstant(-1.0);
441   PetscCall(VecRestoreArray(mu[0],&x_ptr));
442 
443   PetscCall(TSAdjointSolve(ts));
444   PetscCall(TSGetCostIntegral(ts,&q));
445   PetscCall(ComputeSensiP(lambda[0],mu[0],ctx));
446   PetscCall(VecCopy(mu[0],G));
447   return 0;
448 }
449 
450 /*TEST
451 
452    build:
453       requires: !complex
454 
455    test:
456       args: -viewer_binary_skip_info -ts_adapt_type none -tao_monitor -tao_gatol 0.0 -tao_grtol 1.e-3 -tao_converged_reason
457 
458    test:
459       suffix: 2
460       args: -viewer_binary_skip_info -ts_adapt_type none -tao_monitor -tao_gatol 0.0 -tao_grtol 1.e-3 -tao_converged_reason -tao_test_gradient
461 
462 TEST*/
463