ignore some more memcpys/serialization when a buffer is detected as shared

[simgrid.git] / src / smpi / smpi_request.cpp

diff --git a/src/smpi/smpi_request.cpp b/src/smpi/smpi_request.cpp
index aa1bf22..fd91cf4 100644 (file)
--- a/src/smpi/smpi_request.cpp
+++ b/src/smpi/smpi_request.cpp
@@ -108,7 +108,7 @@ namespace smpi{
 Request::Request(void *buf, int count, MPI_Datatype datatype, int src, int dst, int tag, MPI_Comm comm, unsigned flags) : buf_(buf), old_type_(datatype), src_(src), dst_(dst), tag_(tag), comm_(comm), flags_(flags) 
 {
   void *old_buf = nullptr;
 Request::Request(void *buf, int count, MPI_Datatype datatype, int src, int dst, int tag, MPI_Comm comm, unsigned flags) : buf_(buf), old_type_(datatype), src_(src), dst_(dst), tag_(tag), comm_(comm), flags_(flags) 
 {
   void *old_buf = nullptr;

-  if((((flags & RECV) != 0) && ((flags & ACCUMULATE) !=0)) || (datatype->flags() & DT_FLAG_DERIVED)){
+  if(((((flags & RECV) != 0) && ((flags & ACCUMULATE) !=0)) || (datatype->flags() & DT_FLAG_DERIVED)) && (!smpi_is_shared(buf_))){

     // This part handles the problem of non-contiguous memory
     old_buf = buf;
     buf_ = count==0 ? nullptr : xbt_malloc(count*datatype->size());
     // This part handles the problem of non-contiguous memory
     old_buf = buf;
     buf_ = count==0 ? nullptr : xbt_malloc(count*datatype->size());


@@ -758,7 +758,8 @@ void Request::finish_wait(MPI_Request* request, MPI_Status * status)
     req->print_request("Finishing");
     MPI_Datatype datatype = req->old_type_;
 
     req->print_request("Finishing");
     MPI_Datatype datatype = req->old_type_;
 

-    if(((req->flags_ & ACCUMULATE) != 0) || (datatype->flags() & DT_FLAG_DERIVED)){
+    if((((req->flags_ & ACCUMULATE) != 0) || (datatype->flags() & DT_FLAG_DERIVED)) && (!smpi_is_shared(req->old_buf_))){
+

       if (!smpi_process()->replaying()){
         if( smpi_privatize_global_variables != 0 && (static_cast<char*>(req->old_buf_) >= smpi_start_data_exe)
             && ((char*)req->old_buf_ < smpi_start_data_exe + smpi_size_data_exe )){
       if (!smpi_process()->replaying()){
         if( smpi_privatize_global_variables != 0 && (static_cast<char*>(req->old_buf_) >= smpi_start_data_exe)
             && ((char*)req->old_buf_ < smpi_start_data_exe + smpi_size_data_exe )){