X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/b5969ee20ac5146838882322a9499ac7ee4d7a97..8454c4dde25913b0c430ceff82aabab70ff0b1a6:/src/smpi/smpi_bench.c

diff --git a/src/smpi/smpi_bench.c b/src/smpi/smpi_bench.c
index 9e769c65a2..8b37cab4ae 100644
--- a/src/smpi/smpi_bench.c
+++ b/src/smpi/smpi_bench.c
@@ -4,6 +4,7 @@
 /* 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 "internal_config.h"
 #include "private.h"
 #include "xbt/dict.h"
 #include "xbt/sysdep.h"
@@ -24,6 +25,10 @@
 #include <string.h>
 #include <stdio.h>
 
+#ifndef MAP_ANONYMOUS
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_bench, smpi,
                                 "Logging specific to SMPI (benchmarking)");
 
@@ -201,28 +206,46 @@ void smpi_bench_end(void)
     xbt_backtrace_display_current();
     xbt_die("Aborting.");
   }
-  smpi_execute(xbt_os_timer_elapsed(timer));
+  // Simulate the benchmarked computation unless disabled via command-line argument
+  if (sg_cfg_get_boolean("smpi/simulate_computation")) {
+    smpi_execute(xbt_os_timer_elapsed(timer));
+  }
 }
 
-unsigned int smpi_sleep(unsigned int secs)
+/* Private sleep function used by smpi_sleep() and smpi_usleep() */
+static unsigned int private_sleep(double secs)
 {
-  smx_action_t action;
-
   smpi_bench_end();
 
-  double flops = (double) secs*simcall_host_get_speed(SIMIX_host_self());
-  XBT_DEBUG("Sleep for: %f flops", flops);
-  action = simcall_host_execute("computation", SIMIX_host_self(), flops, 1, 0, 0);
+  XBT_DEBUG("Sleep for: %lf secs", secs);
   #ifdef HAVE_TRACING
-    simcall_set_category (action, TRACE_internal_smpi_get_category());
-  #endif
-  simcall_host_execution_wait(action);
+  int rank = smpi_comm_rank(MPI_COMM_WORLD);
+  instr_extra_data extra = xbt_new0(s_instr_extra_data_t,1);
+  extra->type=TRACING_SLEEPING;
+  extra->sleep_duration=secs;
+  TRACE_smpi_sleeping_in(rank, extra);
+#endif
+  simcall_process_sleep(secs);
+#ifdef HAVE_TRACING
+  TRACE_smpi_sleeping_out(rank);
+#endif
 
   smpi_bench_begin();
-  return secs;
+  return 0;
 }
 
-int smpi_gettimeofday(struct timeval *tv)
+unsigned int smpi_sleep(unsigned int secs)
+{
+  return private_sleep((double)secs);
+}
+
+int smpi_usleep(useconds_t usecs)
+{
+  return (int)private_sleep((double)usecs / 1000000.0);
+}
+
+
+int smpi_gettimeofday(struct timeval *tv, void* tz)
 {
   double now;
   smpi_bench_end();
@@ -239,11 +262,11 @@ int smpi_gettimeofday(struct timeval *tv)
   return 0;
 }
 
-extern double sg_maxmin_precision;
+extern double sg_surf_precision;
 unsigned long long smpi_rastro_resolution (void)
 {
   smpi_bench_end();
-  double resolution = (1/sg_maxmin_precision);
+  double resolution = (1/sg_surf_precision);
   smpi_bench_begin();
   return (unsigned long long)resolution;
 }
@@ -569,7 +592,6 @@ void* smpi_shared_set_call(const char* func, const char* input, void* data) {
 
 
 
-#ifndef WIN32
 #define TOPAGE(addr) (void *)(((unsigned long)(addr) / xbt_pagesize) * xbt_pagesize)
 
 
@@ -589,11 +611,18 @@ void switch_data_segment(int dest){
 
   if (loaded_page==dest)//no need to switch either
     return;
+
+
 #ifdef HAVE_MMAP
+  int i;
+  if(loaded_page==-1){//initial switch, do the copy from the real page here
+    for (i=0; i< SIMIX_process_count(); i++){
+      memcpy(mappings[i],TOPAGE(start_data_exe),size_data_exe);
+    }
+  }
   int current= fds[dest];
   XBT_VERB("Switching data frame to the one of process %d", dest);
   void* tmp = mmap (TOPAGE(start_data_exe), size_data_exe, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, current, 0);
-  msync(TOPAGE(start_data_exe), size_data_exe, MS_SYNC | MS_INVALIDATE );
   if (tmp != TOPAGE(start_data_exe))
     xbt_die("Couldn't map the new region");
   loaded_page=dest;
@@ -751,5 +780,3 @@ void smpi_destroy_global_memory_segments(){
 
 }
 
-
-#endif