privatization : perform the initialization at process launch, not at MPI_Init time

[simgrid.git] / src / smpi / smpi_bench.c

diff --git a/src/smpi/smpi_bench.c b/src/smpi/smpi_bench.c
index 126d181..537092b 100644 (file)
--- a/src/smpi/smpi_bench.c
+++ b/src/smpi/smpi_bench.c
@@ -590,7 +590,15 @@ 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);