Lines Matching refs:armP
39 TaoLineSearch_OWARMIJO *armP = (TaoLineSearch_OWARMIJO *)ls->data; in TaoLineSearchDestroy_OWArmijo() local
42 PetscCall(PetscFree(armP->memory)); in TaoLineSearchDestroy_OWArmijo()
43 if (armP->x) PetscCall(PetscObjectDereference((PetscObject)armP->x)); in TaoLineSearchDestroy_OWArmijo()
44 PetscCall(VecDestroy(&armP->work)); in TaoLineSearchDestroy_OWArmijo()
51 TaoLineSearch_OWARMIJO *armP = (TaoLineSearch_OWARMIJO *)ls->data; in TaoLineSearchSetFromOptions_OWArmijo() local
55 …nsReal("-tao_ls_OWArmijo_alpha", "initial reference constant", "", armP->alpha, &armP->alpha, NULL… in TaoLineSearchSetFromOptions_OWArmijo()
56 …onsReal("-tao_ls_OWArmijo_beta_inf", "decrease constant one", "", armP->beta_inf, &armP->beta_inf,… in TaoLineSearchSetFromOptions_OWArmijo()
57 …PetscCall(PetscOptionsReal("-tao_ls_OWArmijo_beta", "decrease constant", "", armP->beta, &armP->be… in TaoLineSearchSetFromOptions_OWArmijo()
58 …scOptionsReal("-tao_ls_OWArmijo_sigma", "acceptance constant", "", armP->sigma, &armP->sigma, NULL… in TaoLineSearchSetFromOptions_OWArmijo()
59 …o_ls_OWArmijo_memory_size", "number of historical elements", "", armP->memorySize, &armP->memorySi… in TaoLineSearchSetFromOptions_OWArmijo()
60 …reference_policy", "policy for updating reference value", "", armP->referencePolicy, &armP->refere… in TaoLineSearchSetFromOptions_OWArmijo()
61 …rmijo_replacement_policy", "policy for updating memory", "", armP->replacementPolicy, &armP->repla… in TaoLineSearchSetFromOptions_OWArmijo()
62 …jo_nondescending", "Use nondescending OWArmijo algorithm", "", armP->nondescending, &armP->nondesc… in TaoLineSearchSetFromOptions_OWArmijo()
69 TaoLineSearch_OWARMIJO *armP = (TaoLineSearch_OWARMIJO *)ls->data; in TaoLineSearchView_OWArmijo() local
76 if (armP->nondescending) PetscCall(PetscViewerASCIIPrintf(pv, " (nondescending)")); in TaoLineSearchView_OWArmijo()
77 …PetscCall(PetscViewerASCIIPrintf(pv, ": alpha=%g beta=%g ", (double)armP->alpha, (double)armP->bet… in TaoLineSearchView_OWArmijo()
78 PetscCall(PetscViewerASCIIPrintf(pv, "sigma=%g ", (double)armP->sigma)); in TaoLineSearchView_OWArmijo()
79 PetscCall(PetscViewerASCIIPrintf(pv, "memsize=%" PetscInt_FMT "\n", armP->memorySize)); in TaoLineSearchView_OWArmijo()
114 TaoLineSearch_OWARMIJO *armP = (TaoLineSearch_OWARMIJO *)ls->data; in TaoLineSearchApply_OWArmijo() local
129 if (!armP->work) { in TaoLineSearchApply_OWArmijo()
130 PetscCall(VecDuplicate(x, &armP->work)); in TaoLineSearchApply_OWArmijo()
131 armP->x = x; in TaoLineSearchApply_OWArmijo()
132 PetscCall(PetscObjectReference((PetscObject)armP->x)); in TaoLineSearchApply_OWArmijo()
133 } else if (x != armP->x) { in TaoLineSearchApply_OWArmijo()
134 PetscCall(VecDestroy(&armP->work)); in TaoLineSearchApply_OWArmijo()
135 PetscCall(VecDuplicate(x, &armP->work)); in TaoLineSearchApply_OWArmijo()
136 PetscCall(PetscObjectDereference((PetscObject)armP->x)); in TaoLineSearchApply_OWArmijo()
137 armP->x = x; in TaoLineSearchApply_OWArmijo()
138 PetscCall(PetscObjectReference((PetscObject)armP->x)); in TaoLineSearchApply_OWArmijo()
144 if (armP->alpha < 1) { in TaoLineSearchApply_OWArmijo()
145 PetscCall(PetscInfo(ls, "OWArmijo line search error: alpha (%g) < 1\n", (double)armP->alpha)); in TaoLineSearchApply_OWArmijo()
147 } else if ((armP->beta <= 0) || (armP->beta >= 1)) { in TaoLineSearchApply_OWArmijo()
148 PetscCall(PetscInfo(ls, "OWArmijo line search error: beta (%g) invalid\n", (double)armP->beta)); in TaoLineSearchApply_OWArmijo()
150 } else if ((armP->beta_inf <= 0) || (armP->beta_inf >= 1)) { in TaoLineSearchApply_OWArmijo()
151 …PetscCall(PetscInfo(ls, "OWArmijo line search error: beta_inf (%g) invalid\n", (double)armP->beta_… in TaoLineSearchApply_OWArmijo()
153 } else if ((armP->sigma <= 0) || (armP->sigma >= 0.5)) { in TaoLineSearchApply_OWArmijo()
154 … PetscCall(PetscInfo(ls, "OWArmijo line search error: sigma (%g) invalid\n", (double)armP->sigma)); in TaoLineSearchApply_OWArmijo()
156 } else if (armP->memorySize < 1) { in TaoLineSearchApply_OWArmijo()
157 …scInfo(ls, "OWArmijo line search error: memory_size (%" PetscInt_FMT ") < 1\n", armP->memorySize)); in TaoLineSearchApply_OWArmijo()
159 …} else if ((armP->referencePolicy != REFERENCE_MAX) && (armP->referencePolicy != REFERENCE_AVE) &&… in TaoLineSearchApply_OWArmijo()
162 …} else if ((armP->replacementPolicy != REPLACE_FIFO) && (armP->replacementPolicy != REPLACE_MRU)) { in TaoLineSearchApply_OWArmijo()
175 if (!armP->memory) PetscCall(PetscMalloc1(armP->memorySize, &armP->memory)); in TaoLineSearchApply_OWArmijo()
177 if (!armP->memorySetup) { in TaoLineSearchApply_OWArmijo()
178 for (i = 0; i < armP->memorySize; i++) armP->memory[i] = armP->alpha * (*f); in TaoLineSearchApply_OWArmijo()
179 armP->current = 0; in TaoLineSearchApply_OWArmijo()
180 armP->lastReference = armP->memory[0]; in TaoLineSearchApply_OWArmijo()
181 armP->memorySetup = PETSC_TRUE; in TaoLineSearchApply_OWArmijo()
185 ref = armP->memory[0]; in TaoLineSearchApply_OWArmijo()
188 for (i = 1; i < armP->memorySize; i++) { in TaoLineSearchApply_OWArmijo()
189 if (armP->memory[i] > ref) { in TaoLineSearchApply_OWArmijo()
190 ref = armP->memory[i]; in TaoLineSearchApply_OWArmijo()
195 if (armP->referencePolicy == REFERENCE_AVE) { in TaoLineSearchApply_OWArmijo()
197 for (i = 0; i < armP->memorySize; i++) ref += armP->memory[i]; in TaoLineSearchApply_OWArmijo()
198 ref = ref / armP->memorySize; in TaoLineSearchApply_OWArmijo()
199 ref = PetscMax(ref, armP->memory[armP->current]); in TaoLineSearchApply_OWArmijo()
200 } else if (armP->referencePolicy == REFERENCE_MEAN) { in TaoLineSearchApply_OWArmijo()
201 ref = PetscMin(ref, 0.5 * (armP->lastReference + armP->memory[armP->current])); in TaoLineSearchApply_OWArmijo()
204 if (armP->nondescending) fact = armP->sigma; in TaoLineSearchApply_OWArmijo()
213 PetscCall(VecWAXPY(armP->work, ls->step, s, x)); in TaoLineSearchApply_OWArmijo()
216 PetscCall(ProjWork_OWLQN(armP->work, x, g_old, &partgdx)); in TaoLineSearchApply_OWArmijo()
233 PetscCall(TaoLineSearchComputeObjectiveAndGradient(ls, armP->work, f, g)); in TaoLineSearchApply_OWArmijo()
242 ls->step *= armP->beta_inf; in TaoLineSearchApply_OWArmijo()
245 if (armP->nondescending && *f <= ref - ls->step * fact * ref) break; in TaoLineSearchApply_OWArmijo()
246 if (!armP->nondescending && *f <= ref + armP->sigma * gdx) break; in TaoLineSearchApply_OWArmijo()
247 ls->step *= armP->beta; in TaoLineSearchApply_OWArmijo()
267 armP->lastReference = ref; in TaoLineSearchApply_OWArmijo()
268 if (armP->replacementPolicy == REPLACE_FIFO) { in TaoLineSearchApply_OWArmijo()
269 armP->memory[armP->current++] = *f; in TaoLineSearchApply_OWArmijo()
270 if (armP->current >= armP->memorySize) armP->current = 0; in TaoLineSearchApply_OWArmijo()
272 armP->current = idx; in TaoLineSearchApply_OWArmijo()
273 armP->memory[idx] = *f; in TaoLineSearchApply_OWArmijo()
277 PetscCall(VecCopy(armP->work, x)); in TaoLineSearchApply_OWArmijo()
293 TaoLineSearch_OWARMIJO *armP; in TaoLineSearchCreate_OWArmijo() local
297 PetscCall(PetscNew(&armP)); in TaoLineSearchCreate_OWArmijo()
299 armP->memory = NULL; in TaoLineSearchCreate_OWArmijo()
300 armP->alpha = 1.0; in TaoLineSearchCreate_OWArmijo()
301 armP->beta = 0.25; in TaoLineSearchCreate_OWArmijo()
302 armP->beta_inf = 0.25; in TaoLineSearchCreate_OWArmijo()
303 armP->sigma = 1e-4; in TaoLineSearchCreate_OWArmijo()
304 armP->memorySize = 1; in TaoLineSearchCreate_OWArmijo()
305 armP->referencePolicy = REFERENCE_MAX; in TaoLineSearchCreate_OWArmijo()
306 armP->replacementPolicy = REPLACE_MRU; in TaoLineSearchCreate_OWArmijo()
307 armP->nondescending = PETSC_FALSE; in TaoLineSearchCreate_OWArmijo()
308 ls->data = (void *)armP; in TaoLineSearchCreate_OWArmijo()