X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/1fd762bbcbc15aa4ffafe2d15df5cb650d1fa1ff..HEAD:/teshsuite/surf/lmm_usage/lmm_usage.cpp diff --git a/teshsuite/surf/lmm_usage/lmm_usage.cpp b/teshsuite/surf/lmm_usage/lmm_usage.cpp deleted file mode 100644 index 7c7c8c6fd9..0000000000 --- a/teshsuite/surf/lmm_usage/lmm_usage.cpp +++ /dev/null @@ -1,324 +0,0 @@ -/* A few tests for the maxmin library */ - -/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */ - -/* This program is free software; you can redistribute it and/or modify it - * under the terms of the license (GNU LGPL) which comes with this package. */ - -#include "simgrid/msg.h" -#include "src/kernel/lmm/maxmin.hpp" -#include "src/surf/surf_interface.hpp" -#include "xbt/log.h" -#include "xbt/module.h" -#include "xbt/sysdep.h" -#include -#include - -XBT_LOG_NEW_DEFAULT_CATEGORY(surf_test, "Messages specific for surf example"); - -namespace lmm = simgrid::kernel::lmm; - -#define PRINT_VAR(var) XBT_DEBUG(#var " = %g", (var)->get_value()) -#define SHOW_EXPR(expr) XBT_DEBUG(#expr " = %g",expr) - -/* ______ */ -/* ==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) -{ - 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::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_1_2_3 = Sys->variable_new(nullptr, 1.0, -1.0, 3); - lmm::Variable* R_1 = Sys->variable_new(nullptr, 1.0, -1.0, 1); - 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->expand(L1, R_1_2_3, 1.0); - Sys->expand(L2, R_1_2_3, 1.0); - Sys->expand(L3, R_1_2_3, 1.0); - - Sys->expand(L1, R_1, 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)); - } - } - - PRINT_VAR(R_1_2_3); - PRINT_VAR(R_1); - PRINT_VAR(R_2); - PRINT_VAR(R_3); - - Sys->variable_free(R_1_2_3); - Sys->variable_free(R_1); - Sys->variable_free(R_2); - Sys->variable_free(R_3); - delete Sys; -} - -static void test2(method_t method) -{ - 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::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->expand(CPU1, T1, 1.0); - Sys->expand(CPU2, T2, 1.0); - - Sys->solve(); - - PRINT_VAR(T1); - PRINT_VAR(T2); - - Sys->variable_free(T1); - Sys->variable_free(T2); - delete Sys; -} - -static void test3(method_t method) -{ - int flows = 11; - int links = 10; - - double** A = new double*[links + 5]; - /* array to add the constraints of fictitious variables */ - double B[15] = { 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1 }; - - for (int i = 0; i < links + 5; i++) { - A[i] = new double[flows + 5]; - for (int j = 0; j < flows + 5; j++) { - A[i][j] = 0.0; - - if (i >= links || j >= flows) { - A[i][j] = 0.0; - } - } - } - - /*matrix that store the constraints/topology */ - A[0][1] = A[0][7] = 1.0; - A[1][1] = A[1][7] = A[1][8] = 1.0; - A[2][1] = A[2][8] = 1.0; - A[3][8] = 1.0; - A[4][0] = A[4][3] = A[4][9] = 1.0; - A[5][0] = A[5][3] = A[5][4] = A[5][9] = 1.0; - A[6][0] = A[6][4] = A[6][9] = A[6][10] = 1.0; - A[7][2] = A[7][4] = A[7][6] = A[7][9] = A[7][10] = 1.0; - A[8][2] = A[8][10] = 1.0; - A[9][5] = A[9][6] = A[9][9] = 1.0; - A[10][11] = 1.0; - A[11][12] = 1.0; - A[12][13] = 1.0; - 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); - - /* Creates the constraints */ - lmm::Constraint** tmp_cnst = new lmm::Constraint*[15]; - for (int i = 0; i < 15; i++) - tmp_cnst[i] = Sys->constraint_new(nullptr, B[i]); - - /* Creates the variables */ - 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); - } - - /* Link constraints and variables */ - for (int i = 0; i < 15; i++) - for (int j = 0; j < 16; j++) - if (A[i][j]) - Sys->expand(tmp_cnst[i], tmp_var[j], 1.0); - - Sys->solve(); - - for (int j = 0; j < 16; j++) - PRINT_VAR(tmp_var[j]); - - for (int j = 0; j < 16; j++) - Sys->variable_free(tmp_var[j]); - delete[] tmp_var; - delete[] tmp_cnst; - delete Sys; - for (int i = 0; i < links + 5; i++) - delete[] A[i]; - delete[] A; -} - -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); - - return 0; -}