Searched refs:dk_yk (Results 1 – 1 of 1) sorted by relevance
| /petsc/src/tao/bound/impls/bncg/ |
| H A D | bncg.c | 440 PetscReal tmp = 1.0, ynorm, ynorm2 = 1.0, snorm = 1.0, dk_yk = 1.0, gd; in TaoBNCGStepDirectionUpdate() local
451 PetscCall(VecDot(cg->yk, tao->stepdirection, &dk_yk)); in TaoBNCGStepDirectionUpdate()
452 if (step * dnorm < PETSC_MACHINE_EPSILON || step * dk_yk < PETSC_MACHINE_EPSILON) { in TaoBNCGStepDirectionUpdate()
503 PetscCall(TaoBNCGComputeScalarScaling(ynorm2, step * dk_yk, cg->sts, &tau_k, cg->alpha)); in TaoBNCGStepDirectionUpdate()
520 PetscCall(TaoBNCGComputeScalarScaling(ynorm2, step * dk_yk, cg->sts, &tau_k, cg->alpha)); in TaoBNCGStepDirectionUpdate()
521 beta = tau_k * gkp1_yk / dk_yk; in TaoBNCGStepDirectionUpdate()
526 beta = gkp1_yk / dk_yk; in TaoBNCGStepDirectionUpdate()
536 PetscCall(VecDot(cg->yk, tao->stepdirection, &dk_yk)); in TaoBNCGStepDirectionUpdate()
538 …PetscCall(TaoBNCGComputeScalarScaling(ynorm2, step * dk_yk, step * step * dnorm * dnorm, &tau_k, c… in TaoBNCGStepDirectionUpdate()
555 … PetscCall(TaoBNCGComputeScalarScaling(ynorm2, step * dk_yk, snorm * snorm, &tau_k, cg->alpha)); in TaoBNCGStepDirectionUpdate()
[all …]
|