#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"
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. */
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;
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)
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());
}
}
}
+ //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;
}
return group_;
}
-MPI_Topology Comm::topo() {
- return topo_;
-}
-
int Comm::size()
{
if (this == MPI_COMM_UNINITIALIZED)
{
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)
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);
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();
{
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;
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);
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());
}
}
-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;
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];
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){
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);
// 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);
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;
} 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;
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){
}
}
-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
