X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/2cf13759ba1696d88f5ff86afee5324f30ccdbfc..dac4b13fbd1be3d7759769d44654622c43abb74c:/src/smpi/mpi/smpi_comm.cpp

diff --git a/src/smpi/mpi/smpi_comm.cpp b/src/smpi/mpi/smpi_comm.cpp
index 5e03b53bd5..1ecccf4610 100644
--- a/src/smpi/mpi/smpi_comm.cpp
+++ b/src/smpi/mpi/smpi_comm.cpp
@@ -8,6 +8,7 @@
 #include "smpi_datatype.hpp"
 #include "smpi_request.hpp"
 #include "smpi_win.hpp"
+#include "smpi_info.hpp"
 #include "src/smpi/include/smpi_actor.hpp"
 #include "src/surf/HostImpl.hpp"
 
@@ -18,8 +19,6 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_comm, smpi, "Logging specific to SMPI (comm
 simgrid::smpi::Comm mpi_MPI_COMM_UNINITIALIZED;
 MPI_Comm MPI_COMM_UNINITIALIZED=&mpi_MPI_COMM_UNINITIALIZED;
 
-using simgrid::s4u::ActorPtr;
-
 /* Support for cartesian topology was added, but there are 2 other types of topology, graph et dist graph. In order to
  * support them, we have to add a field SMPI_Topo_type, and replace the MPI_Topology field by an union. */
 
@@ -29,7 +28,7 @@ namespace smpi{
 std::unordered_map<int, smpi_key_elem> Comm::keyvals_;
 int Comm::keyval_id_=0;
 
-Comm::Comm(MPI_Group group, MPI_Topology topo, int smp) : group_(group), topo_(topo),is_smp_comm_(smp)
+Comm::Comm(MPI_Group group, MPI_Topology topo, int smp, int in_id) : group_(group), topo_(topo),is_smp_comm_(smp), id_(in_id)
 {
   refcount_        = 1;
   topoType_        = MPI_INVALID_TOPO;
@@ -39,6 +38,21 @@ Comm::Comm(MPI_Group group, MPI_Topology topo, int smp) : group_(group), topo_(t
   non_uniform_map_ = nullptr;
   leaders_map_     = nullptr;
   is_blocked_      = 0;
+  info_            = MPI_INFO_NULL;
+  errhandler_      = MPI_ERRORS_ARE_FATAL;
+  static int global_id_=0;
+  //First creation of comm is done before SIMIX_run, so only do comms for others
+  if(in_id==MPI_UNDEFINED && smp==0 && this->rank()!=MPI_UNDEFINED ){
+    int id;
+    if(this->rank()==0){
+      id=global_id_;
+      global_id_++;
+    }
+    Colls::bcast(&id, 1, MPI_INT, 0, this);
+    XBT_DEBUG("Communicator %p has id %d", this, id);
+    id_=id;//only set here, as we don't want to change it in the middle of the bcast
+    Colls::barrier(this);
+  }
 }
 
 void Comm::destroy(Comm* comm)
@@ -54,7 +68,7 @@ void Comm::destroy(Comm* comm)
 int Comm::dup(MPI_Comm* newcomm){
   if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
     // we need to switch as the called function may silently touch global variables
-    smpi_switch_data_segment(simgrid::s4u::Actor::self());
+    smpi_switch_data_segment(s4u::Actor::self());
   }
   MPI_Group cp = new  Group(this->group());
   (*newcomm)   = new  Comm(cp, this->topo());
@@ -90,6 +104,25 @@ int Comm::dup(MPI_Comm* newcomm){
       }
     }
   }
+  //duplicate info if present
+  if(info_!=MPI_INFO_NULL)
+    (*newcomm)->info_ = new simgrid::smpi::Info(info_);
+  //duplicate errhandler
+  (*newcomm)->set_errhandler(errhandler_);
+  return ret;
+}
+
+int Comm::dup_with_info(MPI_Info info, MPI_Comm* newcomm){
+  int ret = dup(newcomm);
+  if(ret != MPI_SUCCESS)
+    return ret;
+  if((*newcomm)->info_!=MPI_INFO_NULL){
+    simgrid::smpi::Info::unref((*newcomm)->info_);
+    (*newcomm)->info_=MPI_INFO_NULL;
+  }
+  if(info != MPI_INFO_NULL){
+    (*newcomm)->info_=info;
+  }
   return ret;
 }
 
@@ -100,10 +133,6 @@ MPI_Group Comm::group()
   return group_;
 }
 
-MPI_Topology Comm::topo() {
-  return topo_;
-}
-
 int Comm::size()
 {
   if (this == MPI_COMM_UNINITIALIZED)
@@ -115,7 +144,12 @@ int Comm::rank()
 {
   if (this == MPI_COMM_UNINITIALIZED)
     return smpi_process()->comm_world()->rank();
-  return group_->rank(simgrid::s4u::Actor::self());
+  return group_->rank(s4u::Actor::self());
+}
+
+int Comm::id()
+{
+  return id_;
 }
 
 void Comm::get_name (char* name, int* len)
@@ -124,14 +158,27 @@ void Comm::get_name (char* name, int* len)
     smpi_process()->comm_world()->get_name(name, len);
     return;
   }
-  if(this == MPI_COMM_WORLD) {
-    strncpy(name, "WORLD", 6);
-    *len = 5;
+  if(this == MPI_COMM_WORLD && name_.empty()) {
+    strncpy(name, "MPI_COMM_WORLD", 15);
+    *len = 14;
+  } else if(this == MPI_COMM_SELF && name_.empty()) {
+    strncpy(name, "MPI_COMM_SELF", 14);
+    *len = 13;
   } else {
-    *len = snprintf(name, MPI_MAX_NAME_STRING, "%p", this);
+    *len = snprintf(name, MPI_MAX_NAME_STRING+1, "%s", name_.c_str());
+  }
+}
+
+void Comm::set_name (const char* name)
+{
+  if (this == MPI_COMM_UNINITIALIZED){
+    smpi_process()->comm_world()->set_name(name);
+    return;
   }
+  name_.replace (0, MPI_MAX_NAME_STRING+1, name);
 }
 
+
 void Comm::set_leaders_comm(MPI_Comm leaders){
   if (this == MPI_COMM_UNINITIALIZED){
     smpi_process()->comm_world()->set_leaders_comm(leaders);
@@ -140,10 +187,6 @@ void Comm::set_leaders_comm(MPI_Comm leaders){
   leaders_comm_=leaders;
 }
 
-void Comm::set_intra_comm(MPI_Comm leaders){
-  intra_comm_=leaders;
-}
-
 int* Comm::get_non_uniform_map(){
   if (this == MPI_COMM_UNINITIALIZED)
     return smpi_process()->comm_world()->get_non_uniform_map();
@@ -190,19 +233,19 @@ MPI_Comm Comm::split(int color, int key)
 {
   if (this == MPI_COMM_UNINITIALIZED)
     return smpi_process()->comm_world()->split(color, key);
-  int system_tag = 123;
+  int system_tag = -123;
   int* recvbuf;
 
   MPI_Group group_root = nullptr;
   MPI_Group group_out  = nullptr;
   MPI_Group group      = this->group();
-  int rank             = this->rank();
+  int myrank           = this->rank();
   int size             = this->size();
   /* Gather all colors and keys on rank 0 */
   int* sendbuf = xbt_new(int, 2);
   sendbuf[0] = color;
   sendbuf[1] = key;
-  if(rank == 0) {
+  if (myrank == 0) {
     recvbuf = xbt_new(int, 2 * size);
   } else {
     recvbuf = nullptr;
@@ -210,7 +253,7 @@ MPI_Comm Comm::split(int color, int key)
   Coll_gather_default::gather(sendbuf, 2, MPI_INT, recvbuf, 2, MPI_INT, 0, this);
   xbt_free(sendbuf);
   /* Do the actual job */
-  if(rank == 0) {
+  if (myrank == 0) {
     MPI_Group* group_snd = xbt_new(MPI_Group, size);
     std::vector<std::pair<int, int>> rankmap;
     rankmap.reserve(size);
@@ -232,7 +275,7 @@ MPI_Comm Comm::split(int color, int key)
           group_root = group_out; /* Save root's group */
         }
         for (unsigned j = 0; j < rankmap.size(); j++) {
-          ActorPtr actor = group->actor(rankmap[j].second);
+          s4u::ActorPtr actor = group->actor(rankmap[j].second);
           group_out->set_mapping(actor, j);
         }
         MPI_Request* requests = xbt_new(MPI_Request, rankmap.size());
@@ -295,27 +338,7 @@ void Comm::unref(Comm* comm){
   }
 }
 
-void Comm::init_smp(){
-  int leader = -1;
-
-  if (this == MPI_COMM_UNINITIALIZED)
-    smpi_process()->comm_world()->init_smp();
-
-  int comm_size = this->size();
-
-  // If we are in replay - perform an ugly hack
-  // tell SimGrid we are not in replay for a while, because we need the buffers to be copied for the following calls
-  bool replaying = false; //cache data to set it back again after
-  if(smpi_process()->replaying()){
-    replaying = true;
-    smpi_process()->set_replaying(false);
-  }
-
-  if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
-    // we need to switch as the called function may silently touch global variables
-    smpi_switch_data_segment(simgrid::s4u::Actor::self());
-  }
-  //identify neighbours in comm
+MPI_Comm Comm::find_intra_comm(int * leader){
   //get the indices of all processes sharing the same simix host
   auto& process_list      = sg_host_self()->pimpl_->process_list_;
   int intra_comm_size     = 0;
@@ -337,9 +360,33 @@ void Comm::init_smp(){
       i++;
     }
   }
+  *leader=min_index;
+  return new  Comm(group_intra, nullptr, 1);
+}
+
+void Comm::init_smp(){
+  int leader = -1;
+  int i = 0;
+  if (this == MPI_COMM_UNINITIALIZED)
+    smpi_process()->comm_world()->init_smp();
+
+  int comm_size = this->size();
+
+  // If we are in replay - perform an ugly hack
+  // tell SimGrid we are not in replay for a while, because we need the buffers to be copied for the following calls
+  bool replaying = false; //cache data to set it back again after
+  if(smpi_process()->replaying()){
+    replaying = true;
+    smpi_process()->set_replaying(false);
+  }
+
+  if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
+    // we need to switch as the called function may silently touch global variables
+    smpi_switch_data_segment(s4u::Actor::self());
+  }
+  //identify neighbours in comm
+  MPI_Comm comm_intra = find_intra_comm(&leader);
 
-  MPI_Comm comm_intra = new  Comm(group_intra, nullptr, 1);
-  leader=min_index;
 
   int* leaders_map = new int[comm_size];
   int* leader_list = new int[comm_size];
@@ -350,7 +397,7 @@ void Comm::init_smp(){
 
   if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
     // we need to switch as the called function may silently touch global variables
-    smpi_switch_data_segment(simgrid::s4u::Actor::self());
+    smpi_switch_data_segment(s4u::Actor::self());
   }
 
   if(leaders_map_==nullptr){
@@ -379,7 +426,7 @@ void Comm::init_smp(){
   if(MPI_COMM_WORLD!=MPI_COMM_UNINITIALIZED && this!=MPI_COMM_WORLD){
     //create leader_communicator
     for (i=0; i< leader_group_size;i++)
-      leaders_group->set_mapping(simgrid::s4u::Actor::by_pid(leader_list[i]), i);
+      leaders_group->set_mapping(s4u::Actor::by_pid(leader_list[i]), i);
     leader_comm = new  Comm(leaders_group, nullptr,1);
     this->set_leaders_comm(leader_comm);
     this->set_intra_comm(comm_intra);
@@ -387,7 +434,7 @@ void Comm::init_smp(){
     // create intracommunicator
   }else{
     for (i=0; i< leader_group_size;i++)
-      leaders_group->set_mapping(simgrid::s4u::Actor::by_pid(leader_list[i]), i);
+      leaders_group->set_mapping(s4u::Actor::by_pid(leader_list[i]), i);
 
     if(this->get_leaders_comm()==MPI_COMM_NULL){
       leader_comm = new  Comm(leaders_group, nullptr,1);
@@ -423,7 +470,7 @@ void Comm::init_smp(){
 
   if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
     // we need to switch as the called function may silently touch global variables
-    smpi_switch_data_segment(simgrid::s4u::Actor::self());
+    smpi_switch_data_segment(s4u::Actor::self());
   }
   // Are the ranks blocked ? = allocated contiguously on the SMP nodes
   int is_blocked=1;
@@ -461,7 +508,7 @@ MPI_Comm Comm::f2c(int id) {
   } else if(F2C::f2c_lookup() != nullptr && id >= 0) {
     char key[KEY_SIZE];
     const auto& lookup = F2C::f2c_lookup();
-    auto comm          = lookup->find(get_key_id(key, id));
+    auto comm          = lookup->find(get_key(key, id));
     return comm == lookup->end() ? MPI_COMM_NULL : static_cast<MPI_Comm>(comm->second);
   } else {
     return MPI_COMM_NULL;
@@ -470,17 +517,7 @@ MPI_Comm Comm::f2c(int id) {
 
 void Comm::free_f(int id) {
   char key[KEY_SIZE];
-  F2C::f2c_lookup()->erase(id == 0 ? get_key(key, id) : get_key_id(key, id));
-}
-
-int Comm::add_f() {
-  if(F2C::f2c_lookup()==nullptr){
-    F2C::set_f2c_lookup(new std::unordered_map<std::string, F2C*>);
-  }
-  char key[KEY_SIZE];
-  (*(F2C::f2c_lookup()))[this == MPI_COMM_WORLD ? get_key(key, F2C::f2c_id()) : get_key_id(key, F2C::f2c_id())] = this;
-  f2c_id_increment();
-  return F2C::f2c_id()-1;
+  F2C::f2c_lookup()->erase(get_key(key, id));
 }
 
 void Comm::add_rma_win(MPI_Win win){
@@ -500,18 +537,44 @@ void Comm::finish_rma_calls(){
   }
 }
 
-MPI_Comm Comm::split_type(int type, int key, MPI_Info info)
-{
-  if(type != MPI_COMM_TYPE_SHARED){
-    return MPI_COMM_NULL;
-  }
-  this->init_smp();
-  this->ref();
-  this->get_intra_comm()->ref();
-  return this->get_intra_comm();
+MPI_Info Comm::info(){
+  if(info_== MPI_INFO_NULL)
+    info_ = new Info();
+  info_->ref();
+  return info_;
 }
 
+void Comm::set_info(MPI_Info info){
+  if(info_!= MPI_INFO_NULL)
+    info->ref();
+  info_=info;
 }
+
+MPI_Errhandler Comm::errhandler(){
+  return errhandler_;
 }
 
+void Comm::set_errhandler(MPI_Errhandler errhandler){
+  errhandler_=errhandler;
+  if(errhandler_!= MPI_ERRHANDLER_NULL)
+    errhandler->ref();
+}
+
+MPI_Comm Comm::split_type(int type, int /*key*/, MPI_Info)
+{
+  //MPI_UNDEFINED can be given to some nodes... but we need them to still perform the smp part which is collective
+  if(type != MPI_COMM_TYPE_SHARED && type != MPI_UNDEFINED){
+    return MPI_COMM_NULL;
+  }
+  int leader=0;
+  MPI_Comm res= this->find_intra_comm(&leader);
+  if(type != MPI_UNDEFINED)
+    return res;
+  else{
+    Comm::destroy(res);
+    return MPI_COMM_NULL;
+  }
+}
 
+} // namespace smpi
+} // namespace simgrid