teshsuite/surf/lmm_usage/lmm_basic.cpp

   1 #include "src/include/catch.hpp"
   2 #include "src/kernel/lmm/maxmin.hpp"
   3 #include "src/surf/surf_interface.hpp"
   4 #include "xbt/log.h"
   5
   6 #define DOUBLE_PRECISION 0.00001
   7
   8 // Namespace shortcut
   9 namespace lmm = simgrid::kernel::lmm;
  10
  11 // XBT_LOG_NEW_DEFAULT_CATEGORY(surf_test, "Messages specific for surf example");
  12 // XBT_INFO("V1=%g V2=%g V3=%g",V1->get_value(),V2->get_value(),V3->get_value());
  13
  14 TEST_CASE("Test on small systems", "[lmm-small-systems]")
  15 {
  16   lmm::System* Sys = lmm::make_new_maxmin_system(false);
  17
  18   SECTION("Check variables weight (sharing_weight)")
  19   {
  20
  21     // Create constraint
  22     lmm::Constraint* C = Sys->constraint_new(nullptr, 10);
  23
  24     // Create the 3 variables (with increasing weight from 1 to 3)
  25     lmm::Variable* V1 =
  26         Sys->variable_new(nullptr, 1, 0.0, 1); // id=nullptr, weight_value=1, bound=0, number_of_constraints=1
  27     lmm::Variable* V2 = Sys->variable_new(nullptr, 2, 0.0, 1);
  28     lmm::Variable* V3 = Sys->variable_new(nullptr, 3, 0.0, 1);
  29
  30     // Link Variables to Constraint with constant weight 1
  31     Sys->expand(C, V1, 1);
  32     Sys->expand(C, V2, 1);
  33     Sys->expand(C, V3, 1);
  34
  35     Sys->solve();
  36
  37     // Compare with theorical values
  38     REQUIRE(double_equals(V1->get_value(), 5.45455, DOUBLE_PRECISION));
  39     REQUIRE(double_equals(V2->get_value(), 2.72727, DOUBLE_PRECISION));
  40     REQUIRE(double_equals(V3->get_value(), 1.81818, DOUBLE_PRECISION));
  41   }
  42 }