ROL
step/test_17.cpp
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43
50#include "ROL_Stream.hpp"
51#include "Teuchos_GlobalMPISession.hpp"
52#include "Teuchos_XMLParameterListHelpers.hpp"
53
54#include <iostream>
55
56typedef double RealT;
57
58int main(int argc, char *argv[]) {
59
60 Teuchos::GlobalMPISession mpiSession(&argc, &argv);
61
62 // This little trick lets us print to std::cout only if a (dummy) command-line argument is provided.
63 int iprint = argc - 1;
64 ROL::Ptr<std::ostream> outStream;
65 ROL::nullstream bhs; // outputs nothing
66 if (iprint > 0)
67 outStream = ROL::makePtrFromRef(std::cout);
68 else
69 outStream = ROL::makePtrFromRef(bhs);
70
71 int errorFlag = 0;
72
73 // *** Test body.
74
75 try {
76 std::string filename = "input.xml";
77 auto parlist = ROL::getParametersFromXmlFile( filename );
78
79 // Setup optimization problem
80 ROL::Ptr<ROL::Vector<RealT>> x0;
81 std::vector<ROL::Ptr<ROL::Vector<RealT>>> z;
82 ROL::Ptr<ROL::OptimizationProblem<RealT>> optProblem;
83 ROL::GetTestProblem<RealT>(optProblem,x0,z,ROL::TESTOPTPROBLEM_CANTILEVERBEAM);
84
85 // Get Dimension of Problem
86 // int dim = x0->dimension();
87 // parlist->sublist("General").sublist("Krylov").set("Iteration Limit", 2*dim);
88
89 // Check Derivatives
90 optProblem->check(*outStream);
91
92 // Error Vector
93// ROL::Ptr<ROL::Vector<RealT>> e = x0->clone();
94// e->zero();
95
96 // Setup optimization solver
97 parlist->sublist("Status Test").set("Gradient Tolerance",static_cast<RealT>(1e-6));
98 parlist->sublist("Step").set("Type", "Fletcher");
99 ROL::OptimizationSolver<RealT> optSolver(*optProblem,*parlist);
100 optSolver.solve(*outStream);
101
102 // Compute Error
103// RealT err(0);
104// for (int i = 0; i < static_cast<int>(z.size()); ++i) {
105// e->set(*x0);
106// e->axpy(-1.0,*z[i]);
107// if (i == 0) {
108// err = e->norm();
109// }
110// else {
111// err = std::min(err,e->norm());
112// }
113// }
114// *outStream << std::endl << "Norm of Error: " << err << std::endl;
115//
116// RealT tol = static_cast<RealT>(1e-3)*std::max(z[0]->norm(),static_cast<RealT>(1));
117// errorFlag += ((err < tol) ? 0 : 1);
118 }
119 catch (std::logic_error& err) {
120 *outStream << err.what() << std::endl;
121 errorFlag = -1000;
122 }; // end try
123
124 if (errorFlag != 0)
125 std::cout << "End Result: TEST FAILED" << std::endl;
126 else
127 std::cout << "End Result: TEST PASSED" << std::endl;
128
129 return 0;
130
131}
132
Contains definitions of test objective functions.
Defines a no-output stream class ROL::NullStream and a function makeStreamPtr which either wraps a re...
Provides a simplified interface for solving a wide range of optimization problems.
int solve(const ROL::Ptr< StatusTest< Real > > &status=ROL::nullPtr, const bool combineStatus=true)
Solve optimization problem with no iteration output.
@ TESTOPTPROBLEM_CANTILEVERBEAM
int main(int argc, char *argv[])
double RealT