ROL
test_18.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 parlist->sublist("Step").sublist("Trust Region").set("Initial Radius",10.0);
79
80 // Setup optimization problem
81 ROL::Ptr<ROL::Vector<RealT>> x0;
82 std::vector<ROL::Ptr<ROL::Vector<RealT>>> z;
83 ROL::Ptr<ROL::ZOO::getCubic<RealT>> cubic;
84 ROL::Ptr<ROL::OptimizationProblem<RealT>> problem;
85 for (int i = 0; i < 3; ++i) {
86 cubic = ROL::makePtr<ROL::ZOO::getCubic<RealT>>(i);
87 cubic->get(problem,x0,z);
88
89 // Check Derivatives
90 problem->check(*outStream);
91
92 // Setup optimization solver
93 ROL::OptimizationSolver<RealT> solver(*problem,*parlist);
94 solver.solve(*outStream);
95
96 // Compute Error
97 ROL::Ptr<ROL::Vector<RealT>> e = x0->clone();
98 e->zero();
99 RealT err(0);
100 for (int i = 0; i < static_cast<int>(z.size()); ++i) {
101 e->set(*x0);
102 e->axpy(-1.0,*z[i]);
103 if (i == 0) {
104 err = e->norm();
105 }
106 else {
107 err = std::min(err,e->norm());
108 }
109 }
110 *outStream << std::endl << "Norm of Error: " << err << std::endl;
111 RealT tol = static_cast<RealT>(1e-3)*std::max(z[0]->norm(),static_cast<RealT>(1));
112 errorFlag += ((err < tol) ? 0 : 1);
113 }
114 }
115 catch (std::logic_error& err) {
116 *outStream << err.what() << std::endl;
117 errorFlag = -1000;
118 }; // end try
119
120 if (errorFlag != 0)
121 std::cout << "End Result: TEST FAILED" << std::endl;
122 else
123 std::cout << "End Result: TEST PASSED" << std::endl;
124
125 return 0;
126
127}
128
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.
int main(int argc, char *argv[])
Definition test_18.cpp:58
double RealT
Definition test_18.cpp:56