Lines Matching refs:armP
13 TaoLineSearch_ARMIJO *armP = (TaoLineSearch_ARMIJO *)ls->data; in TaoLineSearchDestroy_Armijo() local
16 PetscCall(PetscFree(armP->memory)); in TaoLineSearchDestroy_Armijo()
17 PetscCall(VecDestroy(&armP->x)); in TaoLineSearchDestroy_Armijo()
18 PetscCall(VecDestroy(&armP->work)); in TaoLineSearchDestroy_Armijo()
25 TaoLineSearch_ARMIJO *armP = (TaoLineSearch_ARMIJO *)ls->data; in TaoLineSearchReset_Armijo() local
28 PetscCall(PetscFree(armP->memory)); in TaoLineSearchReset_Armijo()
29 armP->memorySetup = PETSC_FALSE; in TaoLineSearchReset_Armijo()
35 TaoLineSearch_ARMIJO *armP = (TaoLineSearch_ARMIJO *)ls->data; in TaoLineSearchSetFromOptions_Armijo() local
39 …ionsReal("-tao_ls_armijo_alpha", "initial reference constant", "", armP->alpha, &armP->alpha, NULL… in TaoLineSearchSetFromOptions_Armijo()
40 …tionsReal("-tao_ls_armijo_beta_inf", "decrease constant one", "", armP->beta_inf, &armP->beta_inf,… in TaoLineSearchSetFromOptions_Armijo()
41 …PetscCall(PetscOptionsReal("-tao_ls_armijo_beta", "decrease constant", "", armP->beta, &armP->beta… in TaoLineSearchSetFromOptions_Armijo()
42 …PetscCall(PetscOptionsReal("-tao_ls_armijo_sigma", "acceptance constant", "", armP->sigma, &armP->… in TaoLineSearchSetFromOptions_Armijo()
43 …tao_ls_armijo_memory_size", "number of historical elements", "", armP->memorySize, &armP->memorySi… in TaoLineSearchSetFromOptions_Armijo()
44 …reference_policy", "policy for updating reference value", "", armP->referencePolicy, &armP->refere… in TaoLineSearchSetFromOptions_Armijo()
45 …rmijo_replacement_policy", "policy for updating memory", "", armP->replacementPolicy, &armP->repla… in TaoLineSearchSetFromOptions_Armijo()
46 …mijo_nondescending", "Use nondescending armijo algorithm", "", armP->nondescending, &armP->nondesc… in TaoLineSearchSetFromOptions_Armijo()
53 TaoLineSearch_ARMIJO *armP = (TaoLineSearch_ARMIJO *)ls->data; in TaoLineSearchView_Armijo() local
60 if (armP->nondescending) PetscCall(PetscViewerASCIIPrintf(pv, " (nondescending)")); in TaoLineSearchView_Armijo()
62 …PetscCall(PetscViewerASCIIPrintf(pv, ": alpha=%g beta=%g ", (double)armP->alpha, (double)armP->bet… in TaoLineSearchView_Armijo()
63 PetscCall(PetscViewerASCIIPrintf(pv, "sigma=%g ", (double)armP->sigma)); in TaoLineSearchView_Armijo()
64 PetscCall(PetscViewerASCIIPrintf(pv, "memsize=%" PetscInt_FMT "\n", armP->memorySize)); in TaoLineSearchView_Armijo()
90 TaoLineSearch_ARMIJO *armP = (TaoLineSearch_ARMIJO *)ls->data; in TaoLineSearchApply_Armijo() local
100 if (!armP->work) { in TaoLineSearchApply_Armijo()
101 PetscCall(VecDuplicate(x, &armP->work)); in TaoLineSearchApply_Armijo()
102 armP->x = x; in TaoLineSearchApply_Armijo()
103 PetscCall(PetscObjectReference((PetscObject)armP->x)); in TaoLineSearchApply_Armijo()
104 } else if (x != armP->x) { in TaoLineSearchApply_Armijo()
106 PetscCall(VecDestroy(&armP->work)); in TaoLineSearchApply_Armijo()
107 PetscCall(VecDuplicate(x, &armP->work)); in TaoLineSearchApply_Armijo()
108 PetscCall(PetscObjectDereference((PetscObject)armP->x)); in TaoLineSearchApply_Armijo()
109 armP->x = x; in TaoLineSearchApply_Armijo()
110 PetscCall(PetscObjectReference((PetscObject)armP->x)); in TaoLineSearchApply_Armijo()
114 if (armP->alpha < 1) { in TaoLineSearchApply_Armijo()
115 PetscCall(PetscInfo(ls, "Armijo line search error: alpha (%g) < 1\n", (double)armP->alpha)); in TaoLineSearchApply_Armijo()
117 } else if ((armP->beta <= 0) || (armP->beta >= 1)) { in TaoLineSearchApply_Armijo()
118 PetscCall(PetscInfo(ls, "Armijo line search error: beta (%g) invalid\n", (double)armP->beta)); in TaoLineSearchApply_Armijo()
120 } else if ((armP->beta_inf <= 0) || (armP->beta_inf >= 1)) { in TaoLineSearchApply_Armijo()
121 …PetscCall(PetscInfo(ls, "Armijo line search error: beta_inf (%g) invalid\n", (double)armP->beta_in… in TaoLineSearchApply_Armijo()
123 } else if ((armP->sigma <= 0) || (armP->sigma >= 0.5)) { in TaoLineSearchApply_Armijo()
124 PetscCall(PetscInfo(ls, "Armijo line search error: sigma (%g) invalid\n", (double)armP->sigma)); in TaoLineSearchApply_Armijo()
126 } else if (armP->memorySize < 1) { in TaoLineSearchApply_Armijo()
127 …PetscCall(PetscInfo(ls, "Armijo line search error: memory_size (%" PetscInt_FMT ") < 1\n", armP->m… in TaoLineSearchApply_Armijo()
129 …} else if ((armP->referencePolicy != REFERENCE_MAX) && (armP->referencePolicy != REFERENCE_AVE) &&… in TaoLineSearchApply_Armijo()
132 …} else if ((armP->replacementPolicy != REPLACE_FIFO) && (armP->replacementPolicy != REPLACE_MRU)) { in TaoLineSearchApply_Armijo()
145 if (!armP->memory) PetscCall(PetscMalloc1(armP->memorySize, &armP->memory)); in TaoLineSearchApply_Armijo()
147 if (!armP->memorySetup) { in TaoLineSearchApply_Armijo()
148 for (i = 0; i < armP->memorySize; i++) armP->memory[i] = armP->alpha * (*f); in TaoLineSearchApply_Armijo()
150 armP->current = 0; in TaoLineSearchApply_Armijo()
151 armP->lastReference = armP->memory[0]; in TaoLineSearchApply_Armijo()
152 armP->memorySetup = PETSC_TRUE; in TaoLineSearchApply_Armijo()
157 idx = armP->current; in TaoLineSearchApply_Armijo()
158 for (i = 0; i < armP->memorySize; i++) { in TaoLineSearchApply_Armijo()
159 if (armP->memory[i] > ref) { in TaoLineSearchApply_Armijo()
160 ref = armP->memory[i]; in TaoLineSearchApply_Armijo()
165 if (armP->referencePolicy == REFERENCE_AVE) { in TaoLineSearchApply_Armijo()
167 for (i = 0; i < armP->memorySize; i++) ref += armP->memory[i]; in TaoLineSearchApply_Armijo()
168 ref = ref / armP->memorySize; in TaoLineSearchApply_Armijo()
169 ref = PetscMax(ref, armP->memory[armP->current]); in TaoLineSearchApply_Armijo()
170 } else if (armP->referencePolicy == REFERENCE_MEAN) { in TaoLineSearchApply_Armijo()
171 ref = PetscMin(ref, 0.5 * (armP->lastReference + armP->memory[armP->current])); in TaoLineSearchApply_Armijo()
186 if (armP->nondescending) { in TaoLineSearchApply_Armijo()
187 fact = armP->sigma; in TaoLineSearchApply_Armijo()
189 fact = armP->sigma * gdx; in TaoLineSearchApply_Armijo()
195 PetscCall(VecWAXPY(armP->work, ls->step, s, x)); in TaoLineSearchApply_Armijo()
196 if (ls->bounded) PetscCall(VecMedian(ls->lower, armP->work, ls->upper, armP->work)); in TaoLineSearchApply_Armijo()
201 PetscCall(TaoLineSearchComputeObjective(ls, armP->work, f)); in TaoLineSearchApply_Armijo()
204 PetscCall(TaoLineSearchComputeObjectiveAndGTS(ls, armP->work, f, &gdx)); in TaoLineSearchApply_Armijo()
207 PetscCall(TaoLineSearchComputeObjectiveAndGradient(ls, armP->work, f, g)); in TaoLineSearchApply_Armijo()
216 ls->step *= armP->beta_inf; in TaoLineSearchApply_Armijo()
219 if (armP->nondescending && *f <= ref - ls->step * fact * ref) break; in TaoLineSearchApply_Armijo()
220 if (!armP->nondescending && *f <= ref + ls->step * fact) break; in TaoLineSearchApply_Armijo()
222 ls->step *= armP->beta; in TaoLineSearchApply_Armijo()
241 armP->lastReference = ref; in TaoLineSearchApply_Armijo()
242 if (armP->replacementPolicy == REPLACE_FIFO) { in TaoLineSearchApply_Armijo()
243 armP->memory[armP->current++] = *f; in TaoLineSearchApply_Armijo()
244 if (armP->current >= armP->memorySize) armP->current = 0; in TaoLineSearchApply_Armijo()
246 armP->current = idx; in TaoLineSearchApply_Armijo()
247 armP->memory[idx] = *f; in TaoLineSearchApply_Armijo()
251 PetscCall(VecCopy(armP->work, x)); in TaoLineSearchApply_Armijo()
269 TaoLineSearch_ARMIJO *armP; in TaoLineSearchCreate_Armijo() local
273 PetscCall(PetscNew(&armP)); in TaoLineSearchCreate_Armijo()
275 armP->memory = NULL; in TaoLineSearchCreate_Armijo()
276 armP->alpha = 1.0; in TaoLineSearchCreate_Armijo()
277 armP->beta = 0.5; in TaoLineSearchCreate_Armijo()
278 armP->beta_inf = 0.5; in TaoLineSearchCreate_Armijo()
279 armP->sigma = 1e-4; in TaoLineSearchCreate_Armijo()
280 armP->memorySize = 1; in TaoLineSearchCreate_Armijo()
281 armP->referencePolicy = REFERENCE_MAX; in TaoLineSearchCreate_Armijo()
282 armP->replacementPolicy = REPLACE_MRU; in TaoLineSearchCreate_Armijo()
283 armP->nondescending = PETSC_FALSE; in TaoLineSearchCreate_Armijo()
284 ls->data = (void *)armP; in TaoLineSearchCreate_Armijo()