X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/faedb72df7cffcf486677835fdd57d319a010bb1..d3532ee4558ad2997a36fa8739702a7ff4968916:/teshsuite/surf/lmm_usage/lmm_usage.cpp?ds=sidebyside

diff --git a/teshsuite/surf/lmm_usage/lmm_usage.cpp b/teshsuite/surf/lmm_usage/lmm_usage.cpp
index 74a3979d99..95644ca0d8 100644
--- a/teshsuite/surf/lmm_usage/lmm_usage.cpp
+++ b/teshsuite/surf/lmm_usage/lmm_usage.cpp
@@ -1,6 +1,6 @@
 /* A few tests for the maxmin library                                       */
 
-/* Copyright (c) 2007-2018. The SimGrid Team. All rights reserved.          */
+/* 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. */
@@ -16,7 +16,7 @@
 
 XBT_LOG_NEW_DEFAULT_CATEGORY(surf_test, "Messages specific for surf example");
 
-using namespace simgrid::surf;
+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)
@@ -25,33 +25,31 @@ using namespace simgrid::surf;
 /*  ==l1==  L2  ==L3==           */
 /*        ------                 */
 
-enum method_t { MAXMIN, LAGRANGE_RENO, LAGRANGE_VEGAS };
+static lmm::System* new_system()
+{
+  return lmm::make_new_maxmin_system(false);
+}
 
-static simgrid::kernel::lmm::System* new_system(method_t method, bool update)
+double a_test_1 = 0;
+double b_test_1 = 0;
+static double diff_lagrange_test_1(double x)
 {
-  switch (method) {
-    case MAXMIN:
-      return simgrid::kernel::lmm::make_new_maxmin_system(update);
-    case LAGRANGE_VEGAS:
-    case LAGRANGE_RENO:
-      return simgrid::kernel::lmm::make_new_lagrange_system(update);
-    default:
-      xbt_die("Invalid method");
-  }
+  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 func(double), double min, double max, double min_error)
+static double dichotomy(double min, double max, double min_error)
 {
   double overall_error = 2 * min_error;
 
-  double min_func = func(min);
-  double max_func = func(max);
+  double min_func = diff_lagrange_test_1(min);
+  double max_func = diff_lagrange_test_1(max);
 
-  if ((min_func > 0 && max_func > 0))
+  if (min_func > 0 && max_func > 0)
     return min - 1.0;
-  if ((min_func < 0 && max_func < 0))
+  if (min_func < 0 && max_func < 0)
     return max + 1.0;
-  if ((min_func > 0 && max_func < 0))
+  if (min_func > 0 && max_func < 0)
     abort();
 
   SHOW_EXPR(min_error);
@@ -71,7 +69,7 @@ static double dichotomy(double func(double), double min, double max, double min_
     if (fabs(min - middle) < 1e-12 || fabs(max - middle) < 1e-12) {
       break;
     }
-    double middle_func = func(middle);
+    double middle_func = diff_lagrange_test_1(middle);
     SHOW_EXPR(middle);
     SHOW_EXPR(middle_func);
 
@@ -90,35 +88,20 @@ static double dichotomy(double func(double), double min, double max, double min_
   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)
+static void test1()
 {
   double a = 1.0;
   double b = 10.0;
 
-  if (method == LAGRANGE_VEGAS)
-    set_default_protocol_function(simgrid::kernel::lmm::func_vegas_f, simgrid::kernel::lmm::func_vegas_fp,
-                                  simgrid::kernel::lmm::func_vegas_fpi);
-  else if (method == LAGRANGE_RENO)
-    set_default_protocol_function(simgrid::kernel::lmm::func_reno_f, simgrid::kernel::lmm::func_reno_fpi,
-                                  simgrid::kernel::lmm::func_reno_fpi);
-
-  simgrid::kernel::lmm::System* Sys    = new_system(method, true);
-  simgrid::kernel::lmm::Constraint* L1 = Sys->constraint_new(nullptr, a);
-  simgrid::kernel::lmm::Constraint* L2 = Sys->constraint_new(nullptr, b);
-  simgrid::kernel::lmm::Constraint* L3 = Sys->constraint_new(nullptr, a);
+  lmm::System* Sys    = new_system();
+  lmm::Constraint* L1 = Sys->constraint_new(nullptr, a);
+  lmm::Constraint* L2 = Sys->constraint_new(nullptr, b);
+  lmm::Constraint* L3 = Sys->constraint_new(nullptr, a);
 
-  simgrid::kernel::lmm::Variable* R_1_2_3 = Sys->variable_new(nullptr, 1.0, -1.0, 3);
-  simgrid::kernel::lmm::Variable* R_1     = Sys->variable_new(nullptr, 1.0, -1.0, 1);
-  simgrid::kernel::lmm::Variable* R_2     = Sys->variable_new(nullptr, 1.0, -1.0, 1);
-  simgrid::kernel::lmm::Variable* R_3     = Sys->variable_new(nullptr, 1.0, -1.0, 1);
+  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);
@@ -133,49 +116,7 @@ static void test1(method_t method)
   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(diff_lagrange_test_1, 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);
@@ -189,22 +130,15 @@ static void test1(method_t method)
   delete Sys;
 }
 
-static void test2(method_t method)
+static void test2()
 {
-  if (method == LAGRANGE_VEGAS)
-    set_default_protocol_function(simgrid::kernel::lmm::func_vegas_f, simgrid::kernel::lmm::func_vegas_fp,
-                                  simgrid::kernel::lmm::func_vegas_fpi);
-  if (method == LAGRANGE_RENO)
-    set_default_protocol_function(simgrid::kernel::lmm::func_reno_f, simgrid::kernel::lmm::func_reno_fp,
-                                  simgrid::kernel::lmm::func_reno_fpi);
-
-  simgrid::kernel::lmm::System* Sys = new_system(method, true);
+  lmm::System* Sys = new_system();
 
-  simgrid::kernel::lmm::Constraint* CPU1 = Sys->constraint_new(nullptr, 200.0);
-  simgrid::kernel::lmm::Constraint* CPU2 = Sys->constraint_new(nullptr, 100.0);
+  lmm::Constraint* CPU1 = Sys->constraint_new(nullptr, 200.0);
+  lmm::Constraint* CPU2 = Sys->constraint_new(nullptr, 100.0);
 
-  simgrid::kernel::lmm::Variable* T1 = Sys->variable_new(nullptr, 1.0, -1.0, 1);
-  simgrid::kernel::lmm::Variable* T2 = Sys->variable_new(nullptr, 1.0, -1.0, 1);
+  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);
@@ -222,7 +156,7 @@ static void test2(method_t method)
   delete Sys;
 }
 
-static void test3(method_t method)
+static void test3()
 {
   int flows = 11;
   int links = 10;
@@ -259,22 +193,15 @@ static void test3(method_t method)
   A[13][14] =                                        1.0;
   A[14][15] =                                        1.0;
 
-  if (method == LAGRANGE_VEGAS)
-    set_default_protocol_function(simgrid::kernel::lmm::func_vegas_f, simgrid::kernel::lmm::func_vegas_fp,
-                                  simgrid::kernel::lmm::func_vegas_fpi);
-  if (method == LAGRANGE_RENO)
-    set_default_protocol_function(simgrid::kernel::lmm::func_reno_f, simgrid::kernel::lmm::func_reno_fp,
-                                  simgrid::kernel::lmm::func_reno_fpi);
-
-  simgrid::kernel::lmm::System* Sys = new_system(method, true);
+  lmm::System* Sys = new_system();
 
   /* Creates the constraints */
-  simgrid::kernel::lmm::Constraint** tmp_cnst = new simgrid::kernel::lmm::Constraint*[15];
+  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 */
-  simgrid::kernel::lmm::Variable** tmp_var = new simgrid::kernel::lmm::Variable*[16];
+  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);
@@ -304,26 +231,14 @@ static void test3(method_t method)
 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;
 }