/* ==l1== L2 ==L3== */
/* ------ */
-enum method_t { MAXMIN, LAGRANGE_RENO, LAGRANGE_VEGAS };
-
-static lmm::System* new_system(method_t method)
-{
- /* selective update would need real actions instead of NULL as a first parameter to the variable constructor */
- switch (method) {
- case MAXMIN:
- return lmm::make_new_maxmin_system(false);
- case LAGRANGE_VEGAS:
- case LAGRANGE_RENO:
- return lmm::make_new_lagrange_system(false);
- default:
- xbt_die("Invalid method");
- }
-}
-
-double a_test_1 = 0;
-double b_test_1 = 0;
-static double diff_lagrange_test_1(double x)
-{
- return -(3 / (1 + 3 * x * x / 2) - 3 / (2 * (3 * (a_test_1 - x) * (a_test_1 - x) / 2 + 1)) +
- 3 / (2 * (3 * (b_test_1 - a_test_1 + x) * (b_test_1 - a_test_1 + x) / 2 + 1)));
-}
-
-static double dichotomy(double min, double max, double min_error)
-{
- double overall_error = 2 * min_error;
-
- double min_func = diff_lagrange_test_1(min);
- double max_func = diff_lagrange_test_1(max);
-
- if (min_func > 0 && max_func > 0)
- return min - 1.0;
- if (min_func < 0 && max_func < 0)
- return max + 1.0;
- if (min_func > 0 && max_func < 0)
- abort();
-
- SHOW_EXPR(min_error);
-
- while (overall_error > min_error) {
- SHOW_EXPR(overall_error);
- xbt_assert(min_func <= 0 || max_func <= 0);
- xbt_assert(min_func >= 0 || max_func >= 0);
- xbt_assert(min_func <= 0 || max_func >= 0);
-
- SHOW_EXPR(min);
- SHOW_EXPR(min_func);
- SHOW_EXPR(max);
- SHOW_EXPR(max_func);
-
- double middle = (max + min) / 2.0;
- if (fabs(min - middle) < 1e-12 || fabs(max - middle) < 1e-12) {
- break;
- }
- double middle_func = diff_lagrange_test_1(middle);
- SHOW_EXPR(middle);
- SHOW_EXPR(middle_func);
-
- if (middle_func < 0) {
- min = middle;
- min_func = middle_func;
- overall_error = max_func - middle_func;
- } else if (middle_func > 0) {
- max = middle;
- max_func = middle_func;
- overall_error = middle_func - min_func;
- } else {
- overall_error = 0;
- }
- }
- return ((min + max) / 2.0);
-}
-
-static void test1(method_t method)
+static void test1()
{
double a = 1.0;
double b = 10.0;
- if (method == LAGRANGE_VEGAS)
- lmm::Lagrange::set_default_protocol_function(lmm::func_vegas_f, lmm::func_vegas_fp, lmm::func_vegas_fpi);
- else if (method == LAGRANGE_RENO)
- lmm::Lagrange::set_default_protocol_function(lmm::func_reno_f, lmm::func_reno_fp, lmm::func_reno_fpi);
-
- lmm::System* Sys = new_system(method);
+ lmm::System* Sys = lmm::make_new_maxmin_system(false);
lmm::Constraint* L1 = Sys->constraint_new(nullptr, a);
lmm::Constraint* L2 = Sys->constraint_new(nullptr, b);
lmm::Constraint* L3 = Sys->constraint_new(nullptr, a);
lmm::Variable* R_2 = Sys->variable_new(nullptr, 1.0, -1.0, 1);
lmm::Variable* R_3 = Sys->variable_new(nullptr, 1.0, -1.0, 1);
- Sys->update_variable_weight(R_1_2_3, 1.0);
- Sys->update_variable_weight(R_1, 1.0);
- Sys->update_variable_weight(R_2, 1.0);
- Sys->update_variable_weight(R_3, 1.0);
+ Sys->update_variable_penalty(R_1_2_3, 1.0);
+ Sys->update_variable_penalty(R_1, 1.0);
+ Sys->update_variable_penalty(R_2, 1.0);
+ Sys->update_variable_penalty(R_3, 1.0);
Sys->expand(L1, R_1_2_3, 1.0);
Sys->expand(L2, R_1_2_3, 1.0);
Sys->expand(L2, R_2, 1.0);
Sys->expand(L3, R_3, 1.0);
- if (method == MAXMIN) {
- Sys->solve();
- } else {
- double x;
- if (method == LAGRANGE_VEGAS) {
- x = 3 * a / 4 - 3 * b / 8 + sqrt(9 * b * b + 4 * a * a - 4 * a * b) / 8;
- /* Computed with mupad and D_f=1.0 */
- if (x > a) {
- x = a;
- }
- if (x < 0) {
- x = 0;
- }
- } else if (method == LAGRANGE_RENO) {
- a_test_1 = a;
- b_test_1 = b;
- x = dichotomy(0, a, 1e-13);
-
- if (x < 0)
- x = 0;
- if (x > a)
- x = a;
- } else {
- xbt_die( "Invalid method");
- }
-
- Sys->solve();
-
- double max_deviation = 0.0;
- max_deviation = std::max(max_deviation, fabs(R_1->get_value() - x));
- max_deviation = std::max(max_deviation, fabs(R_3->get_value() - x));
- max_deviation = std::max(max_deviation, fabs(R_2->get_value() - (b - a + x)));
- max_deviation = std::max(max_deviation, fabs(R_1_2_3->get_value() - (a - x)));
-
- if (max_deviation > 0.00001) { // Legacy value used in lagrange.c
- XBT_WARN("Max Deviation from optimal solution : %g", max_deviation);
- XBT_WARN("Found x = %1.20f", x);
- XBT_WARN("Deviation from optimal solution (R_1 = %g): %1.20f", x, R_1->get_value() - x);
- XBT_WARN("Deviation from optimal solution (R_2 = %g): %1.20f", b - a + x, R_2->get_value() - (b - a + x));
- XBT_WARN("Deviation from optimal solution (R_3 = %g): %1.20f", x, R_3->get_value() - x);
- XBT_WARN("Deviation from optimal solution (R_1_2_3 = %g): %1.20f", a - x, R_1_2_3->get_value() - (a - x));
- }
- }
+ Sys->solve();
PRINT_VAR(R_1_2_3);
PRINT_VAR(R_1);
delete Sys;
}
-static void test2(method_t method)
+static void test2()
{
- if (method == LAGRANGE_VEGAS)
- lmm::Lagrange::set_default_protocol_function(lmm::func_vegas_f, lmm::func_vegas_fp, lmm::func_vegas_fpi);
- if (method == LAGRANGE_RENO)
- lmm::Lagrange::set_default_protocol_function(lmm::func_reno_f, lmm::func_reno_fp, lmm::func_reno_fpi);
-
- lmm::System* Sys = new_system(method);
+ lmm::System* Sys = lmm::make_new_maxmin_system(false);
lmm::Constraint* CPU1 = Sys->constraint_new(nullptr, 200.0);
lmm::Constraint* CPU2 = Sys->constraint_new(nullptr, 100.0);
lmm::Variable* T1 = Sys->variable_new(nullptr, 1.0, -1.0, 1);
lmm::Variable* T2 = Sys->variable_new(nullptr, 1.0, -1.0, 1);
- Sys->update_variable_weight(T1, 1.0);
- Sys->update_variable_weight(T2, 1.0);
+ Sys->update_variable_penalty(T1, 1.0);
+ Sys->update_variable_penalty(T2, 1.0);
Sys->expand(CPU1, T1, 1.0);
Sys->expand(CPU2, T2, 1.0);
delete Sys;
}
-static void test3(method_t method)
+static void test3()
{
int flows = 11;
int links = 10;
A[13][14] = 1.0;
A[14][15] = 1.0;
- if (method == LAGRANGE_VEGAS)
- lmm::Lagrange::set_default_protocol_function(lmm::func_vegas_f, lmm::func_vegas_fp, lmm::func_vegas_fpi);
- if (method == LAGRANGE_RENO)
- lmm::Lagrange::set_default_protocol_function(lmm::func_reno_f, lmm::func_reno_fp, lmm::func_reno_fpi);
-
- lmm::System* Sys = new_system(method);
+ lmm::System* Sys = lmm::make_new_maxmin_system(false);
/* Creates the constraints */
lmm::Constraint** tmp_cnst = new lmm::Constraint*[15];
lmm::Variable** tmp_var = new lmm::Variable*[16];
for (int j = 0; j < 16; j++) {
tmp_var[j] = Sys->variable_new(nullptr, 1.0, -1.0, 15);
- Sys->update_variable_weight(tmp_var[j], 1.0);
+ Sys->update_variable_penalty(tmp_var[j], 1.0);
}
/* Link constraints and variables */
int main(int argc, char** argv)
{
MSG_init(&argc, argv);
- XBT_INFO("***** Test 1 (Max-Min)");
- test1(MAXMIN);
- XBT_INFO("***** Test 1 (Lagrange - Vegas)");
- test1(LAGRANGE_VEGAS);
- XBT_INFO("***** Test 1 (Lagrange - Reno)");
- test1(LAGRANGE_RENO);
-
- XBT_INFO("***** Test 2 (Max-Min)");
- test2(MAXMIN);
- XBT_INFO("***** Test 2 (Lagrange - Vegas)");
- test2(LAGRANGE_VEGAS);
- XBT_INFO("***** Test 2 (Lagrange - Reno)");
- test2(LAGRANGE_RENO);
-
- XBT_INFO("***** Test 3 (Max-Min)");
- test3(MAXMIN);
- XBT_INFO("***** Test 3 (Lagrange - Vegas)");
- test3(LAGRANGE_VEGAS);
- XBT_INFO("***** Test 3 (Lagrange - Reno)");
- test3(LAGRANGE_RENO);
+ XBT_INFO("***** Test 1");
+ test1();
+
+ XBT_INFO("***** Test 2");
+ test2();
+
+ XBT_INFO("***** Test 3");
+ test3();
return 0;
}
