X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/94ccc614fbf5c291ebaf3a5c5ae117353dbb9f5e..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 ac869f5653..0000000000 --- a/teshsuite/surf/lmm_usage/lmm_usage.cpp +++ /dev/null @@ -1,323 +0,0 @@ -/* A few tests for the maxmin library */ - -/* Copyright (c) 2007-2017. 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/surf/surf_interface.hpp" -#include "surf/maxmin.hpp" -#include "xbt/log.h" -#include "xbt/module.h" -#include "xbt/sysdep.h" -#include - -XBT_LOG_NEW_DEFAULT_CATEGORY(surf_test, "Messages specific for surf example"); - -#define PRINT_VAR(var) XBT_DEBUG(#var " = %g",lmm_variable_getvalue(var)) -#define SHOW_EXPR(expr) XBT_DEBUG(#expr " = %g",expr) - -/* ______ */ -/* ==l1== L2 ==L3== */ -/* ------ */ - -enum method_t { MAXMIN, LAGRANGE_RENO, LAGRANGE_VEGAS }; - -static double dichotomy(double func(double), double min, double max, double min_error) -{ - double overall_error = 2 * min_error; - - double min_func = func(min); - double max_func = func(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 = func(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); -} - -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 void test1(method_t method) -{ - double a = 1.0; - double b = 10.0; - - if (method == LAGRANGE_VEGAS) - lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp, func_vegas_fpi); - else if (method == LAGRANGE_RENO) - lmm_set_default_protocol_function(func_reno_f, func_reno_fpi, func_reno_fpi); - - lmm_system_t Sys = lmm_system_new(1); - lmm_constraint_t L1 = lmm_constraint_new(Sys, nullptr, a); - lmm_constraint_t L2 = lmm_constraint_new(Sys, nullptr, b); - lmm_constraint_t L3 = lmm_constraint_new(Sys, nullptr, a); - - lmm_variable_t R_1_2_3 = lmm_variable_new(Sys, nullptr, 1.0, -1.0, 3); - lmm_variable_t R_1 = lmm_variable_new(Sys, nullptr, 1.0, -1.0, 1); - lmm_variable_t R_2 = lmm_variable_new(Sys, nullptr, 1.0, -1.0, 1); - lmm_variable_t R_3 = lmm_variable_new(Sys, nullptr, 1.0, -1.0, 1); - - lmm_update_variable_weight(Sys, R_1_2_3, 1.0); - lmm_update_variable_weight(Sys, R_1, 1.0); - lmm_update_variable_weight(Sys, R_2, 1.0); - lmm_update_variable_weight(Sys, R_3, 1.0); - - lmm_expand(Sys, L1, R_1_2_3, 1.0); - lmm_expand(Sys, L2, R_1_2_3, 1.0); - lmm_expand(Sys, L3, R_1_2_3, 1.0); - - lmm_expand(Sys, L1, R_1, 1.0); - lmm_expand(Sys, L2, R_2, 1.0); - lmm_expand(Sys, L3, R_3, 1.0); - - if (method == MAXMIN) { - lmm_solve(Sys); - } 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(diff_lagrange_test_1, 0, a, 1e-13); - - if (x < 0) - x = 0; - if (x > a) - x = a; - } else { - xbt_die( "Invalid method"); - } - - lagrange_solve(Sys); - - double max_deviation = 0.0; - max_deviation = MAX(max_deviation, fabs(lmm_variable_getvalue(R_1) - x)); - max_deviation = MAX(max_deviation, fabs(lmm_variable_getvalue(R_3) - x)); - max_deviation = MAX(max_deviation, fabs(lmm_variable_getvalue(R_2) - (b - a + x))); - max_deviation = MAX(max_deviation, fabs(lmm_variable_getvalue(R_1_2_3) - (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, lmm_variable_getvalue(R_1) - x); - XBT_WARN("Deviation from optimal solution (R_2 = %g): %1.20f", b - a + x, - lmm_variable_getvalue(R_2) - (b - a + x)); - XBT_WARN("Deviation from optimal solution (R_3 = %g): %1.20f", x, lmm_variable_getvalue(R_3) - x); - XBT_WARN("Deviation from optimal solution (R_1_2_3 = %g): %1.20f", a - x, - lmm_variable_getvalue(R_1_2_3) - (a - x)); - } - } - - PRINT_VAR(R_1_2_3); - PRINT_VAR(R_1); - PRINT_VAR(R_2); - PRINT_VAR(R_3); - - lmm_variable_free(Sys, R_1_2_3); - lmm_variable_free(Sys, R_1); - lmm_variable_free(Sys, R_2); - lmm_variable_free(Sys, R_3); - lmm_system_free(Sys); -} - -static void test2(method_t method) -{ - if (method == LAGRANGE_VEGAS) - lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp, func_vegas_fpi); - if (method == LAGRANGE_RENO) - lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi); - - lmm_system_t Sys = lmm_system_new(1); - lmm_constraint_t CPU1 = lmm_constraint_new(Sys, nullptr, 200.0); - lmm_constraint_t CPU2 = lmm_constraint_new(Sys, nullptr, 100.0); - - lmm_variable_t T1 = lmm_variable_new(Sys, nullptr, 1.0, -1.0, 1); - lmm_variable_t T2 = lmm_variable_new(Sys, nullptr, 1.0, -1.0, 1); - - lmm_update_variable_weight(Sys, T1, 1.0); - lmm_update_variable_weight(Sys, T2, 1.0); - - lmm_expand(Sys, CPU1, T1, 1.0); - lmm_expand(Sys, CPU2, T2, 1.0); - - if (method == MAXMIN) { - lmm_solve(Sys); - } else if (method == LAGRANGE_VEGAS || method == LAGRANGE_RENO) { - lagrange_solve(Sys); - } else { - xbt_die("Invalid method"); - } - - PRINT_VAR(T1); - PRINT_VAR(T2); - - lmm_variable_free(Sys, T1); - lmm_variable_free(Sys, T2); - lmm_system_free(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_set_default_protocol_function(func_vegas_f, func_vegas_fp, func_vegas_fpi); - if (method == LAGRANGE_RENO) - lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi); - - lmm_system_t Sys = lmm_system_new(1); - - /* Creates the constraints */ - lmm_constraint_t* tmp_cnst = new lmm_constraint_t[15]; - for (int i = 0; i < 15; i++) - tmp_cnst[i] = lmm_constraint_new(Sys, nullptr, B[i]); - - /* Creates the variables */ - lmm_variable_t* tmp_var = new lmm_variable_t[16]; - for (int j = 0; j < 16; j++) { - tmp_var[j] = lmm_variable_new(Sys, nullptr, 1.0, -1.0, 15); - lmm_update_variable_weight(Sys, 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]) - lmm_expand(Sys, tmp_cnst[i], tmp_var[j], 1.0); - - if (method == MAXMIN) { - lmm_solve(Sys); - } else if (method == LAGRANGE_VEGAS) { - lagrange_solve(Sys); - } else if (method == LAGRANGE_RENO) { - lagrange_solve(Sys); - } else { - xbt_die("Invalid method"); - } - - for (int j = 0; j < 16; j++) - PRINT_VAR(tmp_var[j]); - - for (int j = 0; j < 16; j++) - lmm_variable_free(Sys, tmp_var[j]); - delete[] tmp_var; - delete[] tmp_cnst; - lmm_system_free(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; -}