ROL
step/test_13.cpp
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43
50#include "ROL_Stream.hpp"
51#include "Teuchos_GlobalMPISession.hpp"
52
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
78 auto parlist = ROL::getParametersFromXmlFile( filename );
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::OptimizationProblem<RealT> > optProblem;
84 ROL::GetTestProblem<RealT>(optProblem,x0,z,ROL::TESTOPTPROBLEM_HS1);
85
86 // Get Dimension of Problem
87 int dim = x0->dimension();
88 parlist->sublist("General").sublist("Krylov").set("Iteration Limit", 2*dim);
89
90 // Check Derivatives
91 optProblem->check(*outStream);
92
93 // Error Vector
94 ROL::Ptr<ROL::Vector<RealT> > e = x0->clone();
95 e->zero();
96
97 // Setup optimization solver
98 parlist->sublist("Status Test").set("Gradient Tolerance",static_cast<RealT>(1e-6));
99 parlist->sublist("Step").set("Type", "Interior Point");
100 ROL::OptimizationSolver<RealT> optSolver(*optProblem,*parlist);
101 optSolver.solve(*outStream);
102
103 // Compute Error
104 RealT err(0);
105 for (int i = 0; i < static_cast<int>(z.size()); ++i) {
106 e->set(*x0);
107 e->axpy(-1.0,*z[i]);
108 if (i == 0) {
109 err = e->norm();
110 }
111 else {
112 err = std::min(err,e->norm());
113 }
114 }
115 *outStream << std::endl << "Norm of Error: " << err << std::endl;
116
117 RealT tol = static_cast<RealT>(1e-3)*std::max(z[0]->norm(),static_cast<RealT>(1));
118 errorFlag += ((err < tol) ? 0 : 1);
119 }
120 catch (std::logic_error& err) {
121 *outStream << err.what() << std::endl;
122 errorFlag = -1000;
123 }; // end try
124
125 if (errorFlag != 0)
126 std::cout << "End Result: TEST FAILED" << std::endl;
127 else
128 std::cout << "End Result: TEST PASSED" << std::endl;
129
130 return 0;
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.
int main(int argc, char *argv[])
double RealT
constexpr auto dim