From 68eaefa5d4966d0130c64643b0554f05cec1ecf8 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Tue, 23 Feb 2010 18:23:12 +0100
Subject: update BTL (better timer, eigen2 => eigen3, etc)

---
 bench/btl/CMakeLists.txt                           |  2 +-
 bench/btl/data/perlib_plot_settings.txt            |  6 +-
 bench/btl/generic_bench/bench_parameter.hh         |  4 +-
 .../generic_bench/timers/portable_perf_analyzer.hh | 29 ++++-----
 bench/btl/generic_bench/timers/portable_timer.hh   | 60 ++++++++++--------
 bench/btl/libs/eigen2/CMakeLists.txt               | 72 +++++++++++-----------
 6 files changed, 90 insertions(+), 83 deletions(-)

(limited to 'bench/btl')

diff --git a/bench/btl/CMakeLists.txt b/bench/btl/CMakeLists.txt
index af234624a..5855c0d9e 100644
--- a/bench/btl/CMakeLists.txt
+++ b/bench/btl/CMakeLists.txt
@@ -70,7 +70,7 @@ MACRO(BTL_ADD_BENCH targetname)
   IF(BUILD_${targetname})
     ADD_EXECUTABLE(${targetname} ${_sources})
     ADD_TEST(${targetname} "${targetname}")
-    target_link_libraries(${targetname} ${DEFAULT_LIBRARIES})
+    target_link_libraries(${targetname} ${DEFAULT_LIBRARIES} rt)
   ENDIF(BUILD_${targetname})
 
 ENDMACRO(BTL_ADD_BENCH)
diff --git a/bench/btl/data/perlib_plot_settings.txt b/bench/btl/data/perlib_plot_settings.txt
index d45f4ff98..4c253f450 100644
--- a/bench/btl/data/perlib_plot_settings.txt
+++ b/bench/btl/data/perlib_plot_settings.txt
@@ -1,6 +1,6 @@
-eigen2 ;          with lines lw 4 lt 1 lc rgbcolor "black"
-eigen2_novec ;    with lines lw 2 lt 1 lc rgbcolor "#999999"
-eigen2_nogccvec ; with lines lw 2 lt 2 lc rgbcolor "#991010"
+eigen3 ;          with lines lw 4 lt 1 lc rgbcolor "black"
+eigen3_novec ;    with lines lw 2 lt 1 lc rgbcolor "#999999"
+eigen3_nogccvec ; with lines lw 2 lt 2 lc rgbcolor "#991010"
 INTEL_MKL ;       with lines lw 3 lt 2 lc rgbcolor "#00b7ff"
 ATLAS ;           with lines lw 3 lt 1 lc rgbcolor "#52e657"
 gmm ;             with lines lw 3 lt 1 lc rgbcolor "#0000ff"
diff --git a/bench/btl/generic_bench/bench_parameter.hh b/bench/btl/generic_bench/bench_parameter.hh
index e9603e4fc..d14340037 100644
--- a/bench/btl/generic_bench/bench_parameter.hh
+++ b/bench/btl/generic_bench/bench_parameter.hh
@@ -23,7 +23,7 @@
 // minimal time for each measurement
 #define REAL_TYPE float
 // minimal time for each measurement
-#define MIN_TIME 0.5
+#define MIN_TIME 0.2
 // nb of point on bench curves
 #define NB_POINT 100
 // min vector size for axpy bench
@@ -48,6 +48,6 @@
 #define DEFAULT_NB_SAMPLE 1000
 
 // how many times we run a single bench (keep the best perf)
-#define NB_TRIES 5
+#define NB_TRIES 3
 
 #endif
diff --git a/bench/btl/generic_bench/timers/portable_perf_analyzer.hh b/bench/btl/generic_bench/timers/portable_perf_analyzer.hh
index 4298e61df..6b1f8e7d7 100644
--- a/bench/btl/generic_bench/timers/portable_perf_analyzer.hh
+++ b/bench/btl/generic_bench/timers/portable_perf_analyzer.hh
@@ -27,41 +27,41 @@
 template <class Action>
 class Portable_Perf_Analyzer{
 public:
-  Portable_Perf_Analyzer( void ):_nb_calc(1),_chronos(){
+  Portable_Perf_Analyzer( ):_nb_calc(0), m_time_action(0), _chronos(){
     MESSAGE("Portable_Perf_Analyzer Ctor");
   };
   Portable_Perf_Analyzer( const Portable_Perf_Analyzer & ){
     INFOS("Copy Ctor not implemented");
     exit(0);
   };
-  ~Portable_Perf_Analyzer( void ){
+  ~Portable_Perf_Analyzer(){
     MESSAGE("Portable_Perf_Analyzer Dtor");
   };
 
-  BTL_DONT_INLINE  double eval_mflops(int size)
+  BTL_DONT_INLINE double eval_mflops(int size)
   {
     Action action(size);
 
-    double time_action = 0;
-    action.initialize();
-    time_action = time_calculate(action);
-    while (time_action < MIN_TIME)
+//     action.initialize();
+//     time_action = time_calculate(action);
+    while (m_time_action < MIN_TIME)
     {
-      _nb_calc *= 2;
+      if(_nb_calc==0) _nb_calc = 1;
+      else            _nb_calc *= 2;
       action.initialize();
-      time_action = time_calculate(action);
+      m_time_action = time_calculate(action);
     }
 
     // optimize
     for (int i=1; i<NB_TRIES; ++i)
     {
       Action _action(size);
-      std::cout << " " << _action.nb_op_base()*_nb_calc/(time_action*1e6) << " ";
+      std::cout << " " << _action.nb_op_base()*_nb_calc/(m_time_action*1e6) << " ";
       _action.initialize();
-      time_action = std::min(time_action, time_calculate(_action));
+      m_time_action = std::min(m_time_action, time_calculate(_action));
     }
 
-    time_action = time_action / (double(_nb_calc));
+    double time_action = m_time_action / (double(_nb_calc));
 
     // check
     if (BtlConfig::Instance.checkResults && size<128)
@@ -70,7 +70,7 @@ public:
       action.calculate();
       action.check_result();
     }
-    return action.nb_op_base()/(time_action*1000000.0);
+    return action.nb_op_base()/(time_action*1e6);
   }
 
   BTL_DONT_INLINE double time_calculate(Action & action)
@@ -86,7 +86,7 @@ public:
     return _chronos.user_time();
   }
 
-  unsigned long long get_nb_calc( void )
+  unsigned long long get_nb_calc()
   {
     return _nb_calc;
   }
@@ -94,6 +94,7 @@ public:
 
 private:
   unsigned long long _nb_calc;
+  double m_time_action;
   Portable_Timer _chronos;
 
 };
diff --git a/bench/btl/generic_bench/timers/portable_timer.hh b/bench/btl/generic_bench/timers/portable_timer.hh
index 30fc4e883..42528d113 100755
--- a/bench/btl/generic_bench/timers/portable_timer.hh
+++ b/bench/btl/generic_bench/timers/portable_timer.hh
@@ -75,7 +75,7 @@
 
 
  private:
-   
+
    double LIToSecs(LARGE_INTEGER& L) {
      return ((double)L.QuadPart /(double)frequency.QuadPart) ;
    }
@@ -98,34 +98,37 @@ class Portable_Timer
 {
  public:
 
-  Portable_Timer( void ):_utime_sec_start(-1),
-		_utime_usec_start(-1),
-		_utime_sec_stop(-1),
-		_utime_usec_stop(-1)/*,
-        m_prev_cs(-1)*/
+  Portable_Timer( void )
+//   :_utime_sec_start(-1),
+// 		_utime_usec_start(-1),
+// 		_utime_sec_stop(-1),
+// 		_utime_usec_stop(-1)/*,
+//         m_prev_cs(-1)*/
   {
   }
 
 
   void   start()
   {
-    int status=getrusage(RUSAGE_SELF, &resourcesUsage) ;
-//     _start_time = std::clock();
-    _utime_sec_start  =  resourcesUsage.ru_utime.tv_sec ;
-    _utime_usec_start =  resourcesUsage.ru_utime.tv_usec ;
-//     m_prev_cs = resourcesUsage.ru_nivcsw;
+//     int status=getrusage(RUSAGE_SELF, &resourcesUsage) ;
+//     _utime_sec_start  =  resourcesUsage.ru_utime.tv_sec ;
+//     _utime_usec_start =  resourcesUsage.ru_utime.tv_usec ;
+
+    timespec ts;
+    clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
+    m_start_time = double(ts.tv_sec) + 1e-9 * double(ts.tv_nsec);
 
   }
 
   void stop()
   {
-    int status=getrusage(RUSAGE_SELF, &resourcesUsage) ;
-//     _stop_time = std::clock();
-    _utime_sec_stop  =  resourcesUsage.ru_utime.tv_sec ;
-    _utime_usec_stop =  resourcesUsage.ru_utime.tv_usec ;
+//     int status=getrusage(RUSAGE_SELF, &resourcesUsage) ;
+//     _utime_sec_stop  =  resourcesUsage.ru_utime.tv_sec ;
+//     _utime_usec_stop =  resourcesUsage.ru_utime.tv_usec ;
 
-//     m_prev_cs = resourcesUsage.ru_nivcsw - m_prev_cs;
-//     std::cerr << resourcesUsage.ru_nvcsw << " + " << resourcesUsage.ru_nivcsw << "\n";
+    timespec ts;
+    clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
+    m_stop_time = double(ts.tv_sec) + 1e-9 * double(ts.tv_nsec);
 
   }
 
@@ -137,26 +140,29 @@ class Portable_Timer
   double user_time()
   {
 //     std::cout << m_prev_cs << "\n";
-    long tot_utime_sec=_utime_sec_stop-_utime_sec_start;
-    long tot_utime_usec=_utime_usec_stop-_utime_usec_start;
-    return double(tot_utime_sec)+ double(tot_utime_usec)/double(USEC_IN_SEC) ;
+//     long tot_utime_sec=_utime_sec_stop-_utime_sec_start;
+//     long tot_utime_usec=_utime_usec_stop-_utime_usec_start;
+//     return double(tot_utime_sec)+ double(tot_utime_usec)/double(USEC_IN_SEC) ;
+    return m_stop_time - m_start_time;
   }
 
 
 private:
 
-  struct rusage resourcesUsage ;
+//   struct rusage resourcesUsage ;
 
-  long _utime_sec_start ;
-  long _utime_usec_start ;
+//   long _utime_sec_start ;
+//   long _utime_usec_start ;
 
-  long _utime_sec_stop ;
-  long _utime_usec_stop ;
+//   long _utime_sec_stop ;
+//   long _utime_usec_stop ;
 
 //   long m_prev_cs;
 
-  std::clock_t _start_time;
-  std::clock_t _stop_time;
+//   std::clock_t _start_time;
+//   std::clock_t _stop_time;
+
+  double m_stop_time, m_start_time;
 
 }; // Portable_Timer
 
diff --git a/bench/btl/libs/eigen2/CMakeLists.txt b/bench/btl/libs/eigen2/CMakeLists.txt
index 177247077..2d2f74ee2 100644
--- a/bench/btl/libs/eigen2/CMakeLists.txt
+++ b/bench/btl/libs/eigen2/CMakeLists.txt
@@ -1,57 +1,57 @@
-# find_package(MKL)
+
 find_package(Eigen2)
 if (EIGEN2_FOUND)
 
   include_directories(${EIGEN2_INCLUDE_DIR})
-  btl_add_bench(btl_eigen2_linear main_linear.cpp)
-  btl_add_bench(btl_eigen2_vecmat main_vecmat.cpp)
-  btl_add_bench(btl_eigen2_matmat main_matmat.cpp)
-  btl_add_bench(btl_eigen2_adv main_adv.cpp      )
+  btl_add_bench(btl_eigen3_linear main_linear.cpp)
+  btl_add_bench(btl_eigen3_vecmat main_vecmat.cpp)
+  btl_add_bench(btl_eigen3_matmat main_matmat.cpp)
+  btl_add_bench(btl_eigen3_adv main_adv.cpp      )
 
-  btl_add_target_property(btl_eigen2_linear COMPILE_FLAGS "-DBTL_PREFIX=eigen2")
-  btl_add_target_property(btl_eigen2_vecmat COMPILE_FLAGS "-DBTL_PREFIX=eigen2")
-  btl_add_target_property(btl_eigen2_matmat COMPILE_FLAGS "-DBTL_PREFIX=eigen2")
-  btl_add_target_property(btl_eigen2_adv    COMPILE_FLAGS "-DBTL_PREFIX=eigen2")
+  btl_add_target_property(btl_eigen3_linear COMPILE_FLAGS "-fno-exceptions -DBTL_PREFIX=eigen3")
+  btl_add_target_property(btl_eigen3_vecmat COMPILE_FLAGS "-fno-exceptions -DBTL_PREFIX=eigen3")
+  btl_add_target_property(btl_eigen3_matmat COMPILE_FLAGS "-fno-exceptions -DBTL_PREFIX=eigen3")
+  btl_add_target_property(btl_eigen3_adv    COMPILE_FLAGS "-fno-exceptions -DBTL_PREFIX=eigen3")
 
   option(BTL_BENCH_NOGCCVEC "also bench Eigen explicit vec without GCC's auto vec" OFF)
   if(CMAKE_COMPILER_IS_GNUCXX AND BTL_BENCH_NOGCCVEC)
-    btl_add_bench(btl_eigen2_nogccvec_linear main_linear.cpp)
-    btl_add_bench(btl_eigen2_nogccvec_vecmat main_vecmat.cpp)
-    btl_add_bench(btl_eigen2_nogccvec_matmat main_matmat.cpp)
-    btl_add_bench(btl_eigen2_nogccvec_adv    main_adv.cpp   )
-
-    btl_add_target_property(btl_eigen2_nogccvec_linear COMPILE_FLAGS "-fno-tree-vectorize -DBTL_PREFIX=eigen2_nogccvec")
-    btl_add_target_property(btl_eigen2_nogccvec_vecmat COMPILE_FLAGS "-fno-tree-vectorize -DBTL_PREFIX=eigen2_nogccvec")
-    btl_add_target_property(btl_eigen2_nogccvec_matmat COMPILE_FLAGS "-fno-tree-vectorize -DBTL_PREFIX=eigen2_nogccvec")
-    btl_add_target_property(btl_eigen2_nogccvec_adv    COMPILE_FLAGS "-fno-tree-vectorize -DBTL_PREFIX=eigen2_nogccvec")
+    btl_add_bench(btl_eigen3_nogccvec_linear main_linear.cpp)
+    btl_add_bench(btl_eigen3_nogccvec_vecmat main_vecmat.cpp)
+    btl_add_bench(btl_eigen3_nogccvec_matmat main_matmat.cpp)
+    btl_add_bench(btl_eigen3_nogccvec_adv    main_adv.cpp   )
+
+    btl_add_target_property(btl_eigen3_nogccvec_linear COMPILE_FLAGS "-fno-exceptions -fno-tree-vectorize -DBTL_PREFIX=eigen3_nogccvec")
+    btl_add_target_property(btl_eigen3_nogccvec_vecmat COMPILE_FLAGS "-fno-exceptions -fno-tree-vectorize -DBTL_PREFIX=eigen3_nogccvec")
+    btl_add_target_property(btl_eigen3_nogccvec_matmat COMPILE_FLAGS "-fno-exceptions -fno-tree-vectorize -DBTL_PREFIX=eigen3_nogccvec")
+    btl_add_target_property(btl_eigen3_nogccvec_adv    COMPILE_FLAGS "-fno-exceptions -fno-tree-vectorize -DBTL_PREFIX=eigen3_nogccvec")
   endif()
 
 
   if(NOT BTL_NOVEC)
-    btl_add_bench(btl_eigen2_novec_linear main_linear.cpp)
-    btl_add_bench(btl_eigen2_novec_vecmat main_vecmat.cpp)
-    btl_add_bench(btl_eigen2_novec_matmat main_matmat.cpp)
-    btl_add_bench(btl_eigen2_novec_adv main_adv.cpp      )
-    btl_add_target_property(btl_eigen2_novec_linear COMPILE_FLAGS "-DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen2_novec")
-    btl_add_target_property(btl_eigen2_novec_vecmat COMPILE_FLAGS "-DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen2_novec")
-    btl_add_target_property(btl_eigen2_novec_matmat COMPILE_FLAGS "-DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen2_novec")
-    btl_add_target_property(btl_eigen2_novec_adv    COMPILE_FLAGS "-DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen2_novec")
-
-#     if(BUILD_btl_eigen2_adv)
-#       target_link_libraries(btl_eigen2_adv ${MKL_LIBRARIES})
-#     endif(BUILD_btl_eigen2_adv)
+    btl_add_bench(btl_eigen3_novec_linear main_linear.cpp)
+    btl_add_bench(btl_eigen3_novec_vecmat main_vecmat.cpp)
+    btl_add_bench(btl_eigen3_novec_matmat main_matmat.cpp)
+    btl_add_bench(btl_eigen3_novec_adv main_adv.cpp      )
+    btl_add_target_property(btl_eigen3_novec_linear COMPILE_FLAGS "-fno-exceptions -DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen3_novec")
+    btl_add_target_property(btl_eigen3_novec_vecmat COMPILE_FLAGS "-fno-exceptions -DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen3_novec")
+    btl_add_target_property(btl_eigen3_novec_matmat COMPILE_FLAGS "-fno-exceptions -DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen3_novec")
+    btl_add_target_property(btl_eigen3_novec_adv    COMPILE_FLAGS "-fno-exceptions -DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen3_novec")
+
+#     if(BUILD_btl_eigen3_adv)
+#       target_link_libraries(btl_eigen3_adv ${MKL_LIBRARIES})
+#     endif(BUILD_btl_eigen3_adv)
 
   endif(NOT BTL_NOVEC)
 
-  btl_add_bench(btl_tiny_eigen2 btl_tiny_eigen2.cpp OFF)
+  btl_add_bench(btl_tiny_eigen3 btl_tiny_eigen3.cpp OFF)
 
   if(NOT BTL_NOVEC)
-    btl_add_bench(btl_tiny_eigen2_novec btl_tiny_eigen2.cpp OFF)
-    btl_add_target_property(btl_tiny_eigen2_novec    COMPILE_FLAGS "-DBTL_PREFIX=eigen2_tiny")
+    btl_add_bench(btl_tiny_eigen3_novec btl_tiny_eigen3.cpp OFF)
+    btl_add_target_property(btl_tiny_eigen3_novec    COMPILE_FLAGS "-DBTL_PREFIX=eigen3_tiny")
 
-    if(BUILD_btl_tiny_eigen2_novec)
-      btl_add_target_property(btl_tiny_eigen2_novec    COMPILE_FLAGS "-DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen2_tiny_novec")
-    endif(BUILD_btl_tiny_eigen2_novec)
+    if(BUILD_btl_tiny_eigen3_novec)
+      btl_add_target_property(btl_tiny_eigen3_novec    COMPILE_FLAGS "-DEIGEN_DONT_VECTORIZE -DBTL_PREFIX=eigen3_tiny_novec")
+    endif(BUILD_btl_tiny_eigen3_novec)
   endif(NOT BTL_NOVEC)
 
 endif (EIGEN2_FOUND)
-- 
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