cmake: move random seed to boris example

and don't have it a CMake option any more

Signed-off-by: Torbjörn Klatt <[email protected]>

Author: torbjoernk

CMakeLists.txt

@@ -22,7 +22,6 @@ cmake_dependent_option(
 option(pfasst_BUILD_TESTS       "Build test suite for PFASST."                            ON )
 option(pfasst_WITH_MPI          "Build with MPI enabled."                                 ON )
 option(pfasst_WITH_GCC_PROF     "Enable excessive debugging & profiling output with GCC." OFF)
-option(pfasst_DEFAULT_RAND_SEED "Using a hardcoded random seed"                           ON )
 cmake_dependent_option(
        enable_LTO               "enable LinkTimeOptimization"                             OFF
            "CMAKE_BUILD_TYPE" Release)
@@ -43,10 +42,6 @@ if(${pfasst_WITH_MPI})
     add_definitions(-DWITH_MPI)
 endif()
 
-if(pfasst_DEFAULT_RAND_SEED)
-    set(pfasst_RANDOM_SEED "42")
-endif()
-
 # Check for C++11 support
 if(${CMAKE_CXX_COMPILER_ID} MATCHES GNU)
     check_cxx_compiler_flag(-std=c++11 HAVE_STD11)
@@ -129,12 +124,6 @@ if(${CMAKE_CXX_COMPILER_ID} MATCHES GNU)
         "build-in profiling support"
     )
 endif()
-if(pfasst_RANDOM_SEED)
-    add_feature_info(DefaultRandomSeed
-        pfasst_RANDOM_SEED
-        "using specific default random seed ${pfasst_RANDOM_SEED}"
-    )
-endif()
 
 set(3rdparty_INCLUDES)
 set(3rdparty_DEPENDEND_LIBS)

cmake/site_config.hpp.in

@@ -3,10 +3,6 @@
 #ifndef _PFASST__SITE_CONFIG_HPP
 #define _PFASST__SITE_CONFIG_HPP
 
-#ifdef PFASST_DEFAULT_RANDOM_SEED
-  #define PFASST_RANDOM_SEED @pfasst_RANDOM_SEED@
-#endif
-
 #include <string>
 using namespace std;
 

examples/boris/particle_cloud_impl.hpp

@@ -18,6 +18,8 @@ using namespace std;
 
 #include "particle_util.hpp"
 
+#define PFASST_RANDOM_SEED 42
+
 
 namespace pfasst
 {
@@ -280,11 +282,7 @@ namespace pfasst
 
         precision scale = 1000.0;
 
-        #ifdef PFASST_DEFAULT_RANDOM_SEED
-          default_random_engine rd_gen(PFASST_RANDOM_SEED);
-        #else
-          default_random_engine rd_gen();
-        #endif
+        default_random_engine rd_gen(PFASST_RANDOM_SEED);
         precision max_pos = max(center->pos());
         precision max_vel = max(center->vel());
         uniform_real_distribution<precision> dist_pos(- max_pos / scale, max_pos / scale);